CN109212113A - A kind of ion trapping gas molecule separation method and device - Google Patents
A kind of ion trapping gas molecule separation method and device Download PDFInfo
- Publication number
- CN109212113A CN109212113A CN201811230257.0A CN201811230257A CN109212113A CN 109212113 A CN109212113 A CN 109212113A CN 201811230257 A CN201811230257 A CN 201811230257A CN 109212113 A CN109212113 A CN 109212113A
- Authority
- CN
- China
- Prior art keywords
- ion
- electrode
- gas
- trapping
- ionization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 216
- 238000005406 washing Methods 0.000 claims abstract description 53
- 230000005684 electric field Effects 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 21
- 150000002500 ions Chemical class 0.000 claims description 216
- 238000006386 neutralization reaction Methods 0.000 claims description 63
- 230000003472 neutralizing effect Effects 0.000 claims description 37
- 230000007935 neutral effect Effects 0.000 claims description 28
- 239000000126 substance Substances 0.000 claims description 26
- 230000009471 action Effects 0.000 claims description 13
- 230000005284 excitation Effects 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 7
- 230000001846 repelling effect Effects 0.000 claims description 7
- 230000000452 restraining effect Effects 0.000 claims description 3
- 230000009191 jumping Effects 0.000 claims description 2
- 239000012159 carrier gas Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 abstract 1
- 230000008569 process Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000004817 gas chromatography Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000001871 ion mobility spectroscopy Methods 0.000 description 3
- 238000001819 mass spectrum Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The present invention provides a kind of ion trapping gas molecule separator, including device noumenon, device noumenon include sample gas air inlet pipe, ionization ionization source, ionisation chamber, in ion trapping and electrode, ion repulsion electrode, gas washing air inlet pipe, escape pipe；The invention further relates to a kind of ion trapping gas molecule separation methods.The present invention is combined from, proton is affine ionization reaction, electric-field-assisted ion trapping (field cause ion trapping), ion with reduction technique using ultraviolet light photo, realizes sample gas molecule quick separating；Separate time intervals of the invention can link according to the analysis processing speed of subsequent detection instrument and adjust；It only needs to consume lesser electrical power during separating treatment simultaneously to ionize and trap with assisting ion, is not necessarily to a wide range of temperature control, be not necessarily to high pressure carrier gas, whole device is small in size, light-weight, no material consumption.Present inventive concept is ingenious, and separating effect control flexibly, promotes and applies convenient for gas detection.
Description
Technical Field
The invention relates to the field of pretreatment of complex multi-component gas molecule detection samples, in particular to a method for separating ion trapping gas molecules.
Background
The detection of complex multi-component gas molecules is an important part of gas fine detection, when a gas sample is analyzed and detected by adopting a mass spectrum or an ion mobility spectrometry, the sample with less gas molecule types can be directly subjected to sample injection detection, and when the sample to be detected is the complex multi-component gas, part of sample molecules can interfere with each other to cause detection leakage or false detection, so that the detection of the complex multi-component gas molecules needs to be subjected to gas separation sample pretreatment, for example, the complex multi-component gas molecules are combined with a gas chromatograph to be subjected to separation treatment on the sample molecules by using the gas chromatograph before sample injection.
Gas chromatography is the most widely used sample molecular separation processing technology in mass spectrometry, and the separation device of the gas chromatography column takes gas as a mobile phase and solid or liquid as a stationary phase, and the separation of a mixture is realized by utilizing the difference of the boiling point, polarity and adsorption property of substances. The gas chromatography has the defects that the temperature of a chromatographic column needs to be controlled and heated in the separation process, and high-pressure pure carrier gas is needed to push a mobile phase, so that most gas chromatography devices or equipment adopt a temperature control box to heat the chromatographic column, and are provided with high-pressure helium and argon steel cylinders to push the mobile phase, so that the whole device or equipment has large volume and heavy weight, is difficult to carry and move, is not beneficial to on-site rapid detection, and meanwhile, the heavy carrier gas steel cylinder is replaced along with the consumption of the high-pressure carrier gas, so that the inconvenience is brought to the use. In addition, the retention time of the chromatographic column is in the order of minutes, and the time for separating a sample is generally from several minutes to tens of minutes, so that the detection speed cannot be sufficient, and the online monitoring on the order of seconds or faster is required.
In summary, the gas chromatography apparatus or device commonly used for separating and processing the mass spectrum or ion mobility spectrometry complex multi-component gas sample has the defects of large volume, heavy weight, need of high-pressure steel cylinder carrier gas, slow separation processing speed and the like, and along with the development of the portable micro mass spectrometer and the ion mobility spectrometer, the gas chromatography is difficult to meet the application matching requirements of the mass spectrum and the ion mobility spectrometry in the field of portable field fast detection and the field of high-speed on-line detection of second-order frequency. In view of the above, there is a need to develop a new method for separating gas molecules to solve the above problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a device for separating the trapped gas molecules of ions, which combine ultraviolet photoionization, proton affinity ionization reaction, electric field assisted ion trapping (field-induced ion trapping) and ion neutralization reduction technologies to realize the rapid separation of the gas molecules of a sample; meanwhile, only small electric power is consumed to ionize and assist ion trapping in the separation treatment process, large-range temperature control is not needed, high-pressure carrier gas is not needed, and the whole device is small in size, light in weight and free of material consumption.
To achieve the above objects and other advantages in accordance with the present invention, there is provided an ion trapping gas molecule separating method comprising the steps of:
air is supplied, a trapping electric field and an ionization source are started, the excitation power of the ionization source is constant, the air washing is closed, the sample introduction is started, and the sample gas is injected into the ionization reaction cavity; at the moment, the number of photons injected by the ionization source for ionization in unit time is constant, and the number of photons is more than or equal to the number of sample gas molecules; wherein, the sample gas molecules contain at least two substances, and the proton affinity of each sample gas molecule is different;
ionization, closing sample introduction, starting gas washing, ionizing all sample gas molecules which can be ionized under the photon capacity into positive ions, pushing the positive ions to an ion trapping neutralization electrode under the action of the electric field force of an ion repulsion electrode, neutralizing to obtain neutral molecules, separating the molecules from the ion trapping neutralization electrode, ionizing the molecules into the positive ions again, converting the sample gas molecules between an ionic state and a molecular state, restraining the molecules in an ionization source action area near the ion trapping neutralization electrode by a trapped electric field, and ionizing again to obtain sample gas which cannot pass through the ion repulsion electrode;
trapping and separating, namely reducing the number of photons for ionization in unit time, wherein sample gas molecules with relatively low proton affinity are not ionized again to become neutral molecules, and are carried by the washing gas to pass through the ion repulsion electrode and output; the sample gas molecules with relatively high proton affinity are re-ionized and are unable to pass through the ion-repelling electrode.
Preferably, the separation is performed sequentially, the separation to be trapped is completed, the time is delayed for waiting, the instrument to be detected completes the detection, and the trapping and the separation are carried out next time until the sample gas is separated one by one according to the sequence of the proton affinity from low to high.
Preferably, the ionization source is an ultraviolet light ionization source.
An ion trapping gas molecule separation device comprises a device body, wherein the device body comprises a sample gas inlet pipe, an ionization source, an ionization chamber, an ion trapping neutralization electrode, an ion repulsion electrode, a gas washing inlet pipe and a gas outlet pipe; wherein,
the ionization source is used for ionizing the sample gas to be detected in the ionization chamber to form positively charged ions; a plurality of gears of adjustable power output are arranged in the ionization source;
the ionization chamber is used for providing an ionization reaction cavity for ionizing the sample gas to be detected; the ionization chamber is of a three-way structure, wherein a first end is communicated with the ionization source, a second end is provided with the ion trapping and neutralizing electrode, and a third end is provided with the ion repelling electrode;
the ion trapping and neutralizing electrode is used for neutralizing the charge of the positively charged ions and reducing the positively charged ions into neutral molecules; the ion trapping neutralization electrode is communicated with the sample gas inlet pipe and the gas washing inlet pipe;
the ion repulsion electrode is used for providing a trapping electric field for pushing positively charged ions to move towards the ion trapping neutralization electrode; the ion repulsion electrode side is communicated with the air outlet pipe;
sample gas to be detected enters the ionization chamber through the sample gas inlet pipe to be fully ionized to obtain positively charged ions, under the action of the electric field force of the trapping electric field of the ion repulsion electrode, the positive ions are pushed to the ion trapping neutralization electrode to be neutralized to obtain neutral molecules, the molecules are separated from the ion trapping neutralization electrode to be ionized into the positive ions again, the sample gas molecules are converted between an ionic state and a molecular state all the time and are restrained in an ionization source action area near the ion trapping neutralization electrode by a trapping electric field, and the sample gas is ionized again to obtain the sample gas which cannot pass through the ion repulsion electrode; the number of photons for ionization in unit time is reduced, sample gas molecules with relatively low proton affinity are not ionized again to become neutral molecules, and are carried by the washing gas to pass through the ion repulsion electrode and output; the sample gas molecules with relatively high proton affinity cannot pass through the ion repulsion electrode because of being ionized again; and the washing gas enters the ionization chamber through the washing gas inlet pipe, and carries sample gas molecules with relatively low proton affinity energy to pass through the hollow structure of the ion repulsion electrode and be output from the gas outlet pipe.
Preferably, the ionization source is an ultraviolet light ionization source, and the ultraviolet light ionization source comprises an ultraviolet PID lamp, a spiral tube driving coil and a radio frequency driving power supply; the spiral tube driving coil is wound on the ultraviolet PID lamp body; two poles of the spiral tube driving coil are connected with the radio frequency driving power supply; and the light-transmitting window of the ultraviolet PID lamp is connected with the ionization chamber.
Preferably, the ion repulsion electrode is connected with the air outlet pipe through the air outlet collector; the air outlet gathering device comprises a funnel-shaped gathering inner surface and a pore channel; the pore canal is communicated with the converging inner surface and the air outlet pipe.
Preferably, the ionization chamber is of a hollow three-way structure, and a first step and a second step are arranged at one end of the inner surface of the ionization chamber; the first step geometry is greater than the second step geometry; the first step is used for fixing the ion trapping neutralization electrode; the second step and the ion trapping neutralization electrode form a gas guide groove and a gas collecting opening; a third step is arranged at the other end of the inner surface of the ionization chamber; the third step is used for fixing the ion repulsion electrode.
Preferably, a fourth step is further arranged on the end surface of the inner surface of the ionization chamber, which is positioned at the same end of the third step; the fourth step is used for fixing the air outlet concentrator.
Preferably, the ion trapping and neutralizing electrode comprises an air inlet guide groove, an ion neutralizing and trapping plate, a neutralizing electrode lead, a sample air inlet hole and a gas washing air inlet hole; connecting the ion neutralization trapping plate with a power supply through the neutralization electrode lead; the ion neutralization trapping plate is used for neutralizing the electric quantity of positively charged ions; the sample air inlet and the gas washing air inlet are respectively communicated with the air inlet diversion trench; the sample gas inlet hole is communicated with the sample gas inlet pipe; the gas washing air inlet is communicated with the gas washing air inlet pipe.
Preferably, the ion repulsion electrode comprises an electrode plate and a repulsion electrode lead; the electrode plate is connected with a power supply through the repulsion electrode lead; the electrode plate is provided with a hollow channel.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an ion trapping gas molecule separation device which comprises a device body, wherein the device body comprises a sample gas inlet pipe, an ionization source, an ionization chamber, an ion trapping neutralization electrode, an ion repulsion electrode, a gas washing inlet pipe and a gas outlet pipe; the invention also relates to a method for separating the ion trapping gas molecules. The invention combines ultraviolet photoionization, proton affinity ionization reaction, electric field assisted ion trapping (field ion trapping) and ion neutralization reduction technology to realize the rapid separation of sample gas molecules; the separation time interval can be adjusted in a linkage manner according to the analysis processing speed of a subsequent detection instrument; meanwhile, only small electric power is consumed to ionize and assist ion trapping in the separation treatment process, large-range temperature control is not needed, high-pressure carrier gas is not needed, and the whole device is small in size, light in weight and free of material consumption. The invention has the advantages of ingenious conception, flexible control of the separation effect and convenient popularization and application of gas detection.
Drawings
FIG. 1 is a schematic flow diagram of an ion trapping gas molecule separation process according to the present invention;
FIG. 2 is a schematic diagram of a three-dimensional cross-sectional structure of an ion trapping gas molecular separation device according to the present invention;
FIG. 3 is a schematic diagram of the overall structure of an ionization source of an ion trapping gas molecule separating apparatus according to the present invention;
FIG. 4 is a schematic diagram of a three-dimensional cross-sectional structure of an ionization chamber of an ion trapping gas molecule separating device according to the present invention;
FIG. 5 is a schematic diagram of a three-dimensional cross-sectional structure of an ion trapping and neutralizing electrode of an ion trapping gas-molecule separating device according to the present invention;
FIG. 6 is a schematic diagram of the overall structure of the ion-repelling electrode of the ion-trapping gas-molecule separating device according to the present invention;
fig. 7 is a schematic structural diagram of an outlet concentrator of an ion trapping gas molecule separating device according to the present invention.
Reference numbers in the figures:
the device comprises a device body 100, a sample gas inlet pipe 10, an ionization source 20, an ionization chamber 30, an ion trapping neutralization electrode 40, an ion repulsion electrode 50, a gas washing inlet pipe 70, an air outlet pipe 80, a driving power supply 90, an ultraviolet PID lamp 201, a spiral pipe driving coil 202, a radio frequency driving power supply 203, a light-transmitting window 204, an upper step 301, a first step 302, a second step 303, a third step 304, a fourth step 305, a gas inlet guide groove 401, a collision plate 402, an ion neutralization trapping plate 403, a neutralization electrode lead 404, a sample gas inlet hole 405, a gas washing inlet hole 406, an electrode plate 501, a repulsion electrode lead 502, a hollow channel 503, a barrel body 601, a flat barrel bottom 602, a convergence inner surface 603, a barrel opening 604 and a pore passage 605.
Detailed Description
The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
Example 1
Referring to fig. 1, an ion trapping gas molecule separation method includes the steps of:
s1, air inflow, starting a trapping electric field and an ionization source, keeping the excitation power of the ionization source constant, closing air washing, starting sample injection, and injecting sample gas into an ionization reaction cavity; at the moment, the number of photons injected by the ionization source for ionization in unit time is constant, and the number of photons is more than or equal to the number of sample gas molecules; wherein, the sample gas molecules contain at least two substances, and the proton affinity of each sample gas molecule is different; in one embodiment, the high-voltage trapping electric field and the ultraviolet PID lamp are started, the excitation power of the ultraviolet PID lamp is modulated to the maximum, the gas washing is closed, and the sample gas is injected into the ionization reaction cavity by starting the sample gas.
S2, ionizing, closing sample introduction, starting gas washing, ionizing all sample gas molecules which can be ionized under the photon capacity into positive ions, under the action of the electric field force of the ion repulsion electrode, pushing the positive ions to the ion trapping neutralization electrode and then neutralizing to obtain neutral molecules, separating the molecules from the ion trapping neutralization electrode and ionizing the molecules into the positive ions again, converting the sample gas molecules between an ionic state and a molecular state all the time, restraining the sample gas molecules in an ionization source action area near the ion trapping neutralization electrode by a trapping electric field, and ionizing again to obtain sample gas which cannot pass through the ion repulsion electrode; in one embodiment, after the ionization reaction chamber is filled with the sample gas, the sample introduction gas is closed to stop sample introduction, and then the gas washing is started, so that the clean gas continuously flows through the ionization reaction chamber, passes through the ion repulsion electrode, and flows from the gas outlet collector to the matched detection instrument; at the moment, the ultraviolet PID lamp quickly injects enough high-energy ultraviolet photons into the ionization reaction cavity with the maximum driving excitation power, sample molecules with ionization energy below the photon capacity are all ionized into positive ions, the positive ions are trapped on the grounded neutralization electrode plate under the pushing of a high-voltage electric field, the molecules are neutralized and reduced into molecules after electrons are obtained on the electrode plate, then the molecules leave the neutralization electrode plate and are ionized again into positive ions, the positive ions are conveyed to the trapping neutralization electrode plate by the electric field force, the sample gas molecules are always converted between the ionic state and the molecular state and are restrained in an ultraviolet irradiation area near the ion trapping neutralization electrode plate by the high-voltage electric field, and the sample gas which is ionized again cannot pass through the ion repulsion electrode.
S3, trapping and separating, reducing the number of photons for ionization in unit time, wherein sample gas molecules with relatively low proton affinity are not ionized again to become neutral molecules, and are carried by the washing gas to pass through the ion repulsion electrode and output; the sample gas molecules with relatively high proton affinity are re-ionized and are unable to pass through the ion-repelling electrode. In one embodiment, the driving excitation power of the ultraviolet PID lamp is reduced by one step, i.e., tuned down to the next constant power. After the ions of the sample substances obtain electrons from the trapping and neutralizing electrode plate and are neutralized into neutral molecules, when the number of injected high-energy ultraviolet photons in unit time is reduced, the sample substances with relatively lowest proton affinity energy are not ionized again after photoionization and proton affinity ionization reaction to obtain free neutral molecules, and then the free neutral molecules are carried by clean washing gas to pass through a fan-shaped hollow channel of the ion repulsion electrode to be converged in an air outlet convergence device and then are sent to a matched detection instrument.
And S4, sequentially separating, namely, after the trapping and separation are finished, delaying for waiting, finishing the detection by the instrument to be detected, and jumping to the next trapping and separation until the sample gases are separated one by one from the low to the high proton affinity. In one embodiment, after the sample molecules regained freely in the ionization reaction cavity are taken away by the washing gas, the sample molecules are delayed for a period of time and are reserved for a matched detection instrument to carry out detection analysis on the sample molecules separated out in the previous time; and repeating the steps S2 and S3 after the time delay is finished until the sample molecules in the ionization reaction chamber are separated one by one according to the sequence of the proton affinity from low to high.
Example 2
An ion trapping gas molecule separation device comprises a device body 100, wherein the device body 100 comprises a sample gas inlet pipe 10, an ionization source 20, an ionization chamber 30, an ion trapping neutralization electrode 40, an ion repulsion electrode 50, a gas washing inlet pipe 70 and a gas outlet pipe 80; wherein,
the ionization source 20 is used for ionizing the sample gas to be detected in the ionization chamber 30 to form positively charged ions; a plurality of gears of adjustable power output are arranged in the ionization source 20;
the ionization chamber 30 is used for providing an ionization reaction cavity 306 for the ionization of the sample gas to be detected; the ionization chamber 30 is a three-way structure, wherein a first end is communicated with the ionization source 20, a second end is provided with the ion trapping and neutralizing electrode 40, and a third end is provided with the ion repelling electrode 50;
the ion trapping and neutralizing electrode 40 is used for neutralizing the charge of the positively charged ions and reducing the positively charged ions into neutral molecules; the ion trapping neutralization electrode 40 is communicated with the sample gas inlet pipe 10 and the gas washing inlet pipe 70;
the ion-repelling electrode 50 is used for providing an ion-repelling separation electric field for pushing positively charged ions to move towards the ion-trapping neutralization electrode 40; the side of the ion repulsion electrode 50 is communicated with the air outlet pipe 80;
after sample gas to be detected enters the ionization chamber 30 through the sample gas inlet pipe 10 and is fully ionized, positively charged ions are obtained, under the action of the electric field force of the trapping electric field of the ion repulsion electrode 50, the positive ions are pushed to the ion trapping neutralization electrode 40 and then neutralized to obtain neutral molecules, the molecules are separated from the ion trapping neutralization electrode 40 and are ionized into the positive ions again, the sample gas molecules are always converted between an ionic state and a molecular state and are confined in the action area of the ionization source 20 near the ion trapping neutralization electrode 40 by a trapping electric field, and the sample gas is ionized again to be incapable of passing through the ion repulsion electrode; the number of photons for ionization in unit time is reduced, sample gas molecules with relatively low proton affinity are not ionized again to become neutral molecules, and are carried by the washing gas to pass through the ion repulsion electrode and output; the sample gas molecules with relatively high proton affinity cannot pass through the ion repulsion electrode because of being ionized again; the washing gas enters the ionization chamber 30 through the washing gas inlet tube 70, and the washing gas carries the sample gas molecules with relatively low proton affinity energy to pass through the hollow structure of the ion repulsion electrode 50 and output from the gas outlet tube 80.
It should be noted that the proton affinity refers to the energy released during the process of protonating the positive charge abstracted by the molecule during the reaction of the molecule ion, which reflects the ability of the substance molecule to abstract the positive charge, and according to the data of the chemical database of National Institute of Standards and Technology, NIST (NIST chemistry WebBook, SRD 69) for testing and recording the proton affinity, there are almost two thousand substance molecules capable of abstracting the positive charge from the substance positive ion whose proton affinity is lower than that of itself, and the majority of gas molecules under normal pressure are covered. In the embodiment, the separation treatment of the complex multi-component gas molecules is based on a competitive ionization reaction principle, the characteristic that the substance molecules with high proton affinity are easy to exchange charges with the substance ions with low proton affinity to form ion molecule inversion is utilized, the sample gas molecules are sequentially ionized into positive ions from high to low according to the proton affinity with a certain optical power, the ions are trapped and constrained near a neutralization electrode by using an electric field force to enable the ionized molecules to not escape, and the uncharged neutral molecules can be taken out of an ionization chamber by washing gas; gradually reducing the optical power, wherein each time the optical power is reduced, a part of sample substance ions with relatively low proton affinity energy can not be converted into an ionic state again after being neutralized and reduced to neutral molecules on the surface of a trapping and neutralizing electrode along with the reduction of the injection quantity of high-energy ultraviolet photons in unit time, and the neutralized and reduced neutral sample molecules are carried out of an ionization chamber by a gas washing flow and are sent to a matched detection instrument; and after the detection is finished, the optical power is reduced again, the processes are repeated, and the complex multi-component sample gas molecules are separated one by one according to the sequence of the proton affinity energy from low to high. The method is simply summarized that substance molecules with high proton affinity and relatively high energy are converted into ion states by utilizing proton affinity ionization reaction, ions are trapped by a high-voltage electric field and cannot escape from an electric field area, and the substance molecules with low proton affinity and relatively low energy are separated out in advance by freely passing through the electric field area in a neutral molecular state.
Example 3
As shown in fig. 3, the ionization source 20 is an ultraviolet ionization source, which includes an ultraviolet PID lamp 201, a solenoid coil driving coil 202, and a radio frequency driving power source 203; the spiral tube driving coil 202 is wound on the body of the ultraviolet PID lamp 201; the two poles of the spiral tube driving coil 202 are connected with the radio frequency driving power supply 203; the light-transmitting window 204 of the ultraviolet PID lamp 201 is connected with the sample introduction dome 30.
In this embodiment, as shown in fig. 3, the ultraviolet PID lamp 201 has a light-transmitting window 204 that is transparent to high-energy ultraviolet photons, such as magnesium fluoride or lithium fluoride, from which the high-energy ultraviolet photons can exit to the outside of the lamp, and the window end of the ultraviolet PID lamp is connected to the sample inlet dome 30.
It should be noted that the ultraviolet light ionization source is a selective ionization source, and high-energy ultraviolet light is used to ionize gaseous molecules. In the embodiment, the PID lamp is an argon lamp, the wavelength of the shortest spectral line of the argon lamp is 104.8nm, the energy of the corresponding photon with the highest energy is 11.8eV, gas molecules with ionization energy within 11.8eV can be converted into an ionic state, and carrier gas molecules with higher ionization energy (such as ionization energy of nitrogen and oxygen which are main components of air are 14.53eV and 13.62eV respectively) are not influenced and continue to keep a neutral molecular state; meanwhile, the energy of the adopted high-energy ultraviolet photons is below 11.8eV, so that the molecular structure is not damaged. In this embodiment, the high energy in the high-energy ultraviolet photons refers to single photon energy. According to Einstein's photon theory, light is composed of photon flow, and the energy of the photon is inversely proportional to the wavelength of the light, i.e. the shorter the wavelength of the light, the higher the energy of the photon, i.e. the photon energy of the light with the wavelength of 116.5nm is 10.6eV, and the photon energy of the light with the wavelength of 50.8nm is 11.8 eV. Besides the energy of a single photon, one parameter is the light intensity, i.e. the luminous flux per solid angle, which is proportional to the number of photons per unit time that are directed straight through a unit area, i.e. the density distribution of photons per unit time, with a higher light intensity meaning a higher number of photons are emitted per unit time.
In the working process, the radio frequency driving power supply 203 generates radio frequency alternating current to be supplied to the spiral tube driving coil 202, the spiral tube driving coil 202 converts the radio frequency alternating current into an induction electromagnetic field to provide excitation energy for the ultraviolet PID lamp 201, rarefied gas molecules in the induction electromagnetic field excited lamp discharge to generate high-energy ultraviolet light, the high-energy ultraviolet light penetrates through the sample introduction guide cover 30 to irradiate into the ionization chamber 40 after being emitted from the light transmission window 204, although the energy of a single photon is not adjustable in the working process determined by a characteristic spectral line of rarefied gas filled in the lamp, the light emitting intensity of the lamp can be changed through the excitation power, namely, the quantity of the high-energy ultraviolet photons emitted in unit time is adjusted through the output power of. When the driving excitation power of the ultraviolet PID lamp 201 is constant, the PID lamp injects high-energy ultraviolet photons into the ionization reaction chamber 405 at a constant speed, and the sample molecules receiving the high-energy ultraviolet photons are ionized into positive ions, that is, the high-energy ultraviolet photons generate positive ions at a constant speed; when the number of injected high-energy ultraviolet photons is far more than the number of ionized substance molecules in unit time, all the ionized substance molecules can be ionized by light; when the number of injected high-energy ultraviolet photons in unit time is reduced, part of sample substance molecules cannot obtain the high-energy ultraviolet photons and are not photoionized, but the substance molecules with high proton affinity can take positive charges from the substance ions with low proton affinity to generate proton affinity ionization reaction after the consequent proton affinity ionization reaction; after the proton affinity ionization reaction, the substances with high proton affinity are all ionized, and the substances with relatively low proton affinity are in a neutral molecular form.
Example 4
As shown in fig. 4, the ionization chamber 30 is a hollow three-way structure, and a first step 302 and a second step 303 are arranged at one end of the inner surface of the ionization chamber 30; the first step 302 geometry is larger than the second step 303 geometry; the first step 302 is for holding the ion trapping neutralizing electrode 40; the second step 303 and the ion trapping neutralization electrode 40 form an air guide groove and an air collecting opening; the other end of the inner surface of the ionization chamber 30 is provided with a third step 304; the third step 304 is used to fix the ion-repelling electrode 50.
In this embodiment, as shown in fig. 4, the upper opening of the ionization chamber 30 leads to the ultraviolet PID lamp 201, a circular upper step 301 is provided around the upper opening for abutting against the light-transmitting window 204 of the ultraviolet PID lamp 201, the high-energy ultraviolet photon light-transmitting window 204 of the PID lamp is attached to the surface of the upper step 301, and the lamp body of the ultraviolet PID lamp 201 is tightly fitted to the step wall of the upper step 301. The left opening of the ionization chamber 30 leads to the ion trapping and neutralizing electrode 40, the left side has two circular steps, the first step 302 is used for fixing the ion trapping and neutralizing electrode 40, and the second step 303 and the groove ring in the middle of the ion trapping and neutralizing electrode 40 form an air guide groove and an air collecting opening for air inlet. The right side of the ionization chamber 30 is opened to the ion-repelling electrode 50 and the outlet collector 60, and the right side is also provided with two circular steps, wherein the third step 304 is used for clamping the ion-repelling electrode 50, and the fourth step 305 is used for fixing the outlet collector 60. Under the enclosure of the light-transmitting window 204 of the upper ultraviolet PID lamp 201, the left-side ion trapping and neutralizing electrode 40, the right-side ion repelling electrode 50 and the inner wall of the ionization chamber in the direction without an opening, a relatively closed cavity, namely an ionization reaction cavity 306, is formed in the central part of the ionization chamber.
Example 5
As shown in fig. 5, the ion trapping neutralization electrode 40 includes an air inlet channel 401, an ion neutralizing trapping plate 403, a neutralization electrode lead 404, a sample air inlet 405, and a gas washing air inlet 406; the ion neutralization trapping plate 403 is connected to a power supply through the neutralization electrode lead 404; the ion neutralizing and trapping plate 403 is used for neutralizing the charge of the positively charged ions; the sample air inlet hole 405 and the gas washing air inlet hole 406 are respectively communicated with the air inlet diversion trench 401; the sample gas inlet hole 405 is communicated with the sample gas inlet pipe 10; the purge air inlet hole 406 is communicated with the purge air inlet pipe 70.
In the present embodiment, as shown in fig. 4, the ion trapping and neutralizing electrode 40 is a circular i-shaped structure made of corrosion-resistant stainless steel material; a circle of air inlet guide grooves 401 with grooves are formed in the middle waist part of the ionization chamber and used for air inlet guide, and the air inlet guide grooves 401 are matched with the step wall of the circular step 303 on the left side of the ionization chamber to form a relatively wide air inlet guide channel; the left circular abutment plate 402 is used to fit tightly against the left circular first step 302 of the ionization chamber 30; the edge of the ion neutralizing and trapping plate 403 and the step plane of the second step 303 on the left side of the ionization chamber 30 form a circle of relatively narrow air inlets; a neutralizing electrode lead 404 is arranged on the side wall of the edge of the touch plate 402 for connecting the output power ground of the high-voltage driving power supply 90, and two sample air inlets 405 and two gas washing air inlets 406 communicated with the air inlet guiding groove 401 are arranged near the edge and are respectively used for installing the sample gas inlet pipe 10 and the gas washing inlet pipe 70. In the sample injection process, the gas washing is in a closed state, the sample gas flows along a relatively wide groove after entering the gas inlet guide groove 401, and is uniformly injected into the ionization reaction cavity 306 from a gas collecting port on the outer side of the edge of the ion neutralizing and trapping plate 403 after filling the groove; during separation, the sample injection gas is closed, the gas washing is started, the clean gas washing is firstly filled in the gas inlet guide groove 401, then overflows from the gas collecting port and flows into the ionization reaction cavity 306, and neutral sample molecules which are carried in the ionization reaction cavity 306 from left to right and are not ionized flow away from the middle circular hole of the gas outlet concentrator 60 after passing through the ion repulsion electrode 50. The ion trapping neutralization electrode 40 is always grounded, and the right ion neutralization trapping plate 403 and the pole piece of the ion repulsion electrode 50 form a pair of flat plate electrodes.
Example 6
As shown in fig. 6, the ion-repelling electrode 50 includes an electrode sheet 501 and a repelling electrode lead 502; the electrode plate 501 is connected with a power supply through the repulsion electrode lead 502; the electrode plate 501 is provided with a hollow channel 503.
In this embodiment, as shown in fig. 6, a plurality of fan-shaped hollow channels 503 are formed on the circular electrode plate 501 for allowing air to pass through, and the surplus sample gas during sample injection and the washing gas carrying a part of sample substance molecules during separation flow out of the fan-shaped hollow channels 503 into the air outlet collector; the electrode plate 501 and the ion trapping neutralization ion neutralization trapping plate 403 form a pair of parallel electrodes, the repulsion electrode lead 502 connects the electrode plate with the positive high voltage output by the high voltage driving power supply 90, when the positive high voltage is started, the trapping electric field formed between the two parallel electrodes passes through the ionization reaction cavity 306 of the ionization chamber, the ions formed by the photoionization and proton affinity ionization reaction are attracted to the ion neutralization trapping plate 403 under the push of the electric field force, the ions are neutralized into neutral substance molecules after getting electrons on the grounded conductive flat plate, then the neutral substance molecules are carried into the high-energy ultraviolet illumination area by the washing gas flow and are converted into ionic state again by the photoionization or the proton affinity ionization reaction, then the ionic state is trapped by the grounded middle electrode plate under the action of the electric field force, the cycle process of the ionization and the trapping neutralization is repeated, the gaseous substances are limited in the ultraviolet illumination area near the trapping neutralization electrode plate in the cycle repetition process, the ion repulsion electrode can not be reached all the time and leaves the ionization chamber; only when the output power of the rf driving power source 203 is reduced to reduce the number of high-energy uv photons emitted by the uv PID lamp 201 per unit time, a corresponding number of material molecules with relatively lowest proton affinity can not be photo-ionized after leaving the trapping neutralization electrode plate or the ions thereof are deprived of positive charges by other material molecules with high proton affinity to be reduced into molecules, that is, those material molecules with relatively lower proton affinity can still be in a neutral molecular state after leaving the trapping neutralization electrode plate due to the reduction of the number of injected photons per unit time after the photo-ionization and proton affinity ionization reactions, and can be carried by the purge gas to pass through the fan-shaped hollow channels 503 of the ion repelling electrodes to the gas outlet concentrator 60, and finally obtain the opportunity to leave the ionization chamber.
It should be noted that the power source connecting the ion trapping neutralization electrode 40 and the ion repulsion electrode 50 may be the same power source, such as the driving power source 90; two independent power supplies are also possible, and the scope of the present invention should not be limited by the choice of power supplies.
Example 7
As shown in fig. 7, the ion trapping gas molecule separating apparatus further includes an outlet collector 60, wherein the side of the ion repelling electrode 50 is communicated with the outlet pipe 80 via the outlet collector 60; the outlet concentrator 60 comprises a funnel-shaped concentrating inner surface 603 and a pore 605; the orifice 605 communicates the converging interior surface 603 with the outlet tube 80.
In this embodiment, as shown in fig. 7, the outlet concentrator 60 is made of an insulating material and is composed of a left circular barrel body 601 and a right circular flat barrel bottom 602 having a larger area than the barrel body. The inner space of the barrel 601 is in a conical funnel shape, namely a converging inner surface 603; the barrel opening 604 collides with the ion-repelling electrode 50, the ion-repelling electrode 50 is pressed against the third stepped surface 304 on the right side of the ionization chamber 30, and the gas from the fan-shaped hollow hole 503 of the ion-repelling electrode 50 flows into the converging inner surface 603 from the barrel opening. The center of the flat barrel bottom 602 is provided with a pore 605 for fixing the gas outlet pipe 80, the left side of the pore 605 is communicated with the leakage opening of the converging inner surface 603, and the gas collected by the converging inner surface 603 is sent to a matched detection instrument through the gas outlet pipe 80.
The invention provides an ion trapping gas molecule separation device which comprises a device body, wherein the device body comprises a sample gas inlet pipe, an ionization source, an ionization chamber, an ion trapping neutralization electrode, an ion repulsion electrode, a gas washing inlet pipe and a gas outlet pipe; the invention also relates to a method for separating the ion trapping gas molecules. The invention combines ultraviolet photoionization, proton affinity ionization reaction, electric field assisted ion trapping (field ion trapping) and ion neutralization reduction technology to realize the rapid separation of sample gas molecules; the separation time interval can be adjusted in a linkage manner according to the analysis processing speed of a subsequent detection instrument; meanwhile, only small electric power is consumed to ionize and assist ion trapping in the separation treatment process, large-range temperature control is not needed, high-pressure carrier gas is not needed, and the whole device is small in size, light in weight and free of material consumption. The invention has the advantages of ingenious conception, flexible control of the separation effect and convenient popularization and application of gas detection.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. An ion trapping gas molecule separation method, comprising the steps of:
air is supplied, a trapping electric field and an ionization source are started, the excitation power of the ionization source is constant, the air washing is closed, the sample introduction is started, and the sample gas is injected into the ionization reaction cavity; at the moment, the number of photons injected by the ionization source for ionization in unit time is constant, and the number of photons is more than or equal to the number of sample gas molecules; wherein, the sample gas molecules contain at least two substances, and the proton affinity of each sample gas molecule is different;
ionization, closing sample introduction, starting gas washing, ionizing all sample gas molecules which can be ionized under the photon capacity into positive ions, pushing the positive ions to an ion trapping neutralization electrode under the action of the electric field force of an ion repulsion electrode, neutralizing to obtain neutral molecules, separating the molecules from the ion trapping neutralization electrode, ionizing the molecules into the positive ions again, converting the sample gas molecules between an ionic state and a molecular state, restraining the molecules in an ionization source action area near the ion trapping neutralization electrode by a trapped electric field, and ionizing again to obtain sample gas which cannot pass through the ion repulsion electrode;
trapping and separating, namely reducing the number of photons for ionization in unit time, wherein sample gas molecules with relatively low proton affinity are not ionized again to become neutral molecules, and are carried by the washing gas to pass through the ion repulsion electrode and output; the sample gas molecules with relatively high proton affinity are re-ionized and are unable to pass through the ion-repelling electrode.
2. The ion trapping gas molecule separating method of claim 1, further comprising the steps of: and sequentially separating, namely finishing the trapping and separating, delaying for waiting, finishing the detection of the instrument to be detected, and jumping to the next trapping and separating until the sample gases are separated one by one according to the sequence of the proton affinity from low to high.
3. The method of claim 1 or 2, wherein the ionizing ionization source is an ultraviolet ionizing ionization source.
4. An ion trapping gas molecule separating apparatus comprising an apparatus body (100), characterized in that: the device body (100) comprises a sample gas inlet pipe (10), an ionization source (20), an ionization chamber (30), an ion trapping and neutralizing electrode (40), an ion repulsion electrode (50), a gas washing inlet pipe (70) and a gas outlet pipe (80); wherein,
the ionization source (20) is used for ionizing the sample gas to be detected in the ionization chamber (30) to form positively charged ions; a plurality of gears of adjustable power output are arranged in the ionization source (20);
the ionization chamber (30) is used for providing an ionization reaction cavity (306) for ionizing the sample gas to be detected; the ionization chamber (30) is of a three-way structure, wherein a first end is communicated with the ionization source (20), a second end is provided with the ion trapping and neutralizing electrode (40), and a third end is provided with the ion repelling electrode (50);
the ion trapping and neutralizing electrode (40) is used for neutralizing the charge of the positively charged ions and reducing the positively charged ions into neutral molecules; the ion trapping neutralization electrode (40) is communicated with the sample gas inlet pipe (10) and the washing gas inlet pipe (70);
the ion repulsion electrode (50) is used for providing a trapping electric field for pushing positively charged ions to move towards the ion trapping neutralization electrode (40); the side of the ion repulsion electrode (50) is communicated with the air outlet pipe (80);
sample gas to be detected enters the ionization chamber (30) through the sample gas inlet pipe (10) to be fully ionized to obtain positively charged ions, under the action of an electric field force of a trapping electric field of the ion repulsion electrode (50), the positive ions are pushed to the ion trapping neutralization electrode (40) to be neutralized to obtain neutral molecules, the molecules are separated from the ion trapping neutralization electrode (40) to be ionized again into the positive ions, the sample gas molecules are always converted between an ionic state and a molecular state and are confined in an action area of an ionization source (20) near the ion trapping neutralization electrode (40) by a trapping electric field, and the sample gas which is ionized again cannot pass through the ion repulsion electrode; the number of photons for ionization in unit time is reduced, sample gas molecules with relatively low proton affinity are not ionized again to become neutral molecules, and are carried by the washing gas to pass through the ion repulsion electrode and output; the sample gas molecules with relatively high proton affinity cannot pass through the ion repulsion electrode because of being ionized again; and the washing gas enters the ionization chamber (30) through the washing gas inlet pipe (70), and carries sample gas molecules with relatively low proton affinity energy to pass through the hollow structure of the ion repulsion electrode (50) and output from the gas outlet pipe (80).
5. An ion trapping gas molecule separating apparatus according to claim 4, wherein said ionizing ionization source (20) is an ultraviolet ionizing ionization source comprising an ultraviolet PID lamp (201), a solenoid drive coil (202), a radio frequency drive power supply (203); the spiral tube driving coil (202) is wound on the lamp body of the ultraviolet PID lamp (201); the two poles of the spiral tube driving coil (202) are connected with the radio frequency driving power supply (203); the light-transmitting window (204) of the ultraviolet PID lamp (201) is connected with the ionization chamber (30).
6. An ion trapping gas molecule separating apparatus according to claim 4, wherein: the ion repulsion electrode is characterized by further comprising an air outlet concentrator (60), and the side of the ion repulsion electrode (50) is communicated with the air outlet pipe (80) through the air outlet concentrator (60); the gas outlet concentrator (60) comprises a funnel-shaped concentrating inner surface (603) and a pore channel (605); the duct (605) communicates the converging inner surface (603) with the outlet duct (80).
7. An ion trapping gas molecule separating apparatus as claimed in claim 6, wherein: the ionization chamber (30) is of a hollow three-way structure, and a first step (302) and a second step (303) are arranged at one end of the inner surface of the ionization chamber (30); the first step (302) geometry is larger than the second step (303) geometry; the first step (302) is for securing the ion trapping neutralizing electrode (40); the second step (303) and the ion trapping neutralization electrode (40) form an air guide groove and an air collecting opening; the other end of the inner surface of the ionization chamber (30) is provided with a third step (304); the third step (304) is for fixing the ion-repelling electrode (50).
8. An ion trapping gas molecule separating apparatus as claimed in claim 7, wherein: a fourth step (305) is further arranged on the end face of the inner surface of the ionization chamber (30) at the same end of the third step (304); the fourth step (305) is used for fixing the outlet gas concentrator (60).
9. An ion trapping gas molecule separating apparatus according to any one of claims 4 to 8, wherein: the ion trapping and neutralizing electrode (40) comprises an air inlet guide groove (401), an ion neutralizing and trapping plate (403), a neutralizing electrode lead (404), a sample air inlet hole (405) and a gas washing air inlet hole (406); connecting the ion neutralization trapping plate (403) to a power supply via the neutralization electrode lead (404); the ion neutralization trapping plate (403) is used for neutralizing the charge of positively charged ions; the sample air inlet hole (405) and the gas washing air inlet hole (406) are respectively communicated with the air inlet diversion trench (401); the sample gas inlet hole (405) is communicated with the sample gas inlet pipe (10); the washing air inlet hole (406) is communicated with the washing air inlet pipe (70).
10. An ion trapping gas molecule separating apparatus according to any one of claims 4 to 8, wherein: the ion repulsion electrode (50) comprises an electrode plate (501) and a repulsion electrode lead (502); the electrode plate (501) is connected with a power supply through the repulsion electrode lead (502); the electrode plate (501) is provided with a hollow channel (503).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230257.0A CN109212113B (en) | 2018-10-22 | 2018-10-22 | Ion trapping gas molecule separation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230257.0A CN109212113B (en) | 2018-10-22 | 2018-10-22 | Ion trapping gas molecule separation method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109212113A true CN109212113A (en) | 2019-01-15 |
| CN109212113B CN109212113B (en) | 2023-05-12 |
Family
ID=64980013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811230257.0A Active CN109212113B (en) | 2018-10-22 | 2018-10-22 | Ion trapping gas molecule separation method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109212113B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2346422A1 (en) * | 1972-09-14 | 1974-04-04 | Stanford Research Inst | METHOD AND SYSTEM FOR DETECTION OF EXPLOSIVE SUBSTANCES |
| CN101063673A (en) * | 2006-04-26 | 2007-10-31 | 中国科学院大连化学物理研究所 | Vacuumeultraviolet lamp ionization device in time-of-flight mass spectrometer |
| WO2009094059A2 (en) * | 2007-11-06 | 2009-07-30 | The Arizona Board Of Regents On Behalf Of The University Of Arizona | Sensitive ion detection device and method for analysis of compounds as vapors in gases |
| CN103854952A (en) * | 2012-11-30 | 2014-06-11 | 中国科学院大连化学物理研究所 | Mass spectrum vacuum ultraviolet ionization source based on optical-window-free gas discharge lamp |
| CN105914124A (en) * | 2015-02-23 | 2016-08-31 | 株式会社岛津制作所 | Ionization apparatus |
| WO2016141470A1 (en) * | 2015-03-06 | 2016-09-15 | Mécanique Analytique Inc. | Discharge-based photo ionisation detector for use with a gas chromatography system |
-
2018
- 2018-10-22 CN CN201811230257.0A patent/CN109212113B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2346422A1 (en) * | 1972-09-14 | 1974-04-04 | Stanford Research Inst | METHOD AND SYSTEM FOR DETECTION OF EXPLOSIVE SUBSTANCES |
| CN101063673A (en) * | 2006-04-26 | 2007-10-31 | 中国科学院大连化学物理研究所 | Vacuumeultraviolet lamp ionization device in time-of-flight mass spectrometer |
| WO2009094059A2 (en) * | 2007-11-06 | 2009-07-30 | The Arizona Board Of Regents On Behalf Of The University Of Arizona | Sensitive ion detection device and method for analysis of compounds as vapors in gases |
| CN103854952A (en) * | 2012-11-30 | 2014-06-11 | 中国科学院大连化学物理研究所 | Mass spectrum vacuum ultraviolet ionization source based on optical-window-free gas discharge lamp |
| CN105914124A (en) * | 2015-02-23 | 2016-08-31 | 株式会社岛津制作所 | Ionization apparatus |
| WO2016141470A1 (en) * | 2015-03-06 | 2016-09-15 | Mécanique Analytique Inc. | Discharge-based photo ionisation detector for use with a gas chromatography system |
| US20180038832A1 (en) * | 2015-03-06 | 2018-02-08 | Mecanique Analytique Inc. | Discharge-based photo ionisation detector for use with a gas chromatography system |
Non-Patent Citations (1)
| Title |
|---|
| 黄泽建 等: "一种光电离离子阱质谱仪技术研究" * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109212113B (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8704170B2 (en) | Method and apparatus for generating and analyzing ions | |
| US5811800A (en) | Temporary storage of ions for mass spectrometric analyses | |
| JP5529379B2 (en) | Method and apparatus for separating isobaric interferences | |
| CN1199230C (en) | Hybrid ion mobility and mass spectrometer | |
| CN103972018B (en) | Radio-frequency electric field enhanced single photon and chemical ionization source | |
| JP5303273B2 (en) | Method and apparatus for Fourier transform ion cyclotron resonance mass spectrometry | |
| US10794861B2 (en) | Tandem ion mobility spectrometer | |
| US20040094702A1 (en) | Instrument for separating ions in time as functions of preselected ion mobility and ion mass | |
| US20090121127A1 (en) | System and method for spatially-resolved chemical analysis using microplasma desorption and ionization of a sample | |
| CN112703579A (en) | Ion trap array for high-throughput charge detection mass spectrometry | |
| CN106876243A (en) | One kind aids in low pressure vacuum ultraviolet light ionization source for mass spectrographic reagent molecule | |
| CN216747541U (en) | Ion-molecule reaction selection control measuring device based on ion mobility spectrometry | |
| US20160336157A1 (en) | Auxiliary Gas Inlet | |
| CN209471086U (en) | A kind of ion trapping gas molecule separator | |
| CN109283039B (en) | Gas molecule concentration and enrichment method and device | |
| CN111199862B (en) | Capillary micro-area ionization source | |
| EP2798661A1 (en) | Generation of reagent ions for ion-ion reactions | |
| CN201152867Y (en) | Infrared laser desorption/vacuum ultraviolet single photon ionization mass spectrometry analytical equipment | |
| CN109212113A (en) | A kind of ion trapping gas molecule separation method and device | |
| CN111199864B (en) | Radio frequency enhanced reaction photochemical ionization source | |
| WO2017041361A1 (en) | Mass spectrometry device wherein ultraviolet light ionises lost neutral molecules, and operating method for device | |
| CN209471085U (en) | A kind of ion infiltration gas molecule separator | |
| CN109406689B (en) | Ion permeation gas molecular separation method and device | |
| CN113223923B (en) | Portable mass spectrometer and working method thereof | |
| CN209470962U (en) | A kind of gas molecule enrichment method device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 211300 No. 3, ancient Tan Road, Gaochun District Economic Development Zone, Nanjing, Jiangsu Applicant after: Nanjing Guoke Precision Medical Technology Co.,Ltd. Applicant after: Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of Sciences Address before: 210000 No.3 Gutan Avenue, economic development zone, Gaochun District, Nanjing City, Jiangsu Province Applicant before: NANJING GUOKE MEDICAL TECHNOLOGY DEVELOPMENT Co.,Ltd. Applicant before: Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of Sciences |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |