CN211376584U - Heating capillary liquid cathode glow discharge ionization device - Google Patents
Heating capillary liquid cathode glow discharge ionization device Download PDFInfo
- Publication number
- CN211376584U CN211376584U CN202020066497.8U CN202020066497U CN211376584U CN 211376584 U CN211376584 U CN 211376584U CN 202020066497 U CN202020066497 U CN 202020066497U CN 211376584 U CN211376584 U CN 211376584U
- Authority
- CN
- China
- Prior art keywords
- graphite rod
- block
- opening
- glow discharge
- hollow graphite
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The utility model discloses a heating capillary liquid cathode glow discharge ionization device, its structure includes: ionization chamber, waste liquid pond, positive pole unit, spectrum appearance adapted subassembly and mass spectrograph adapted subassembly one demountable installation be in on the ionization chamber, wherein spectrum appearance adapted subassembly includes first appearance unit, first sealed piece and the spectrum appearance connecting block of advancing, and spectrum appearance adapted subassembly includes that the second advances appearance unit, second sealed piece and mass spectrograph connecting block, wherein advances appearance unit intercommunication negative pole cooperation solution that awaits measuring and forms liquid cathode. The utility model discloses a heating capillary liquid cathode glow discharge ionization device both can be used to the atomic spectral analysis and detect and can be used to the effect that mass spectrometry detected, has improved the collection and the transmission effect of treating analysis signal ion, both can work under direct current mode also can be in the radio frequency mode, extends the detection range of application of ionization source, and the suitability is more extensive.
Description
Technical Field
The utility model belongs to the technical field of atomic spectrum analysis and mass spectrometry technique and specifically relates to a heating capillary liquid cathode glow discharge ionization device (the part takes place for the light source).
Background
Heavy metal elements generally exist in nature at natural concentration, but due to the increasing exploitation, smelting, processing and commercial activities of human beings on heavy metals, a lot of heavy metals such as chromium, mercury, cadmium and the like enter the atmosphere, water and soil, and serious environmental pollution is caused. Hexavalent chromium is easily absorbed by human body, and can invade human body through digestive, respiratory tract skin and mucosa, causing vomiting, abdominal pain and carcinogenesis. Therefore, quantitative analysis of trace heavy metals is very important in environmental, food, clinical and drug testing. At present, an inductively coupled plasma emission spectrometer, an atomic absorption spectrometer and the like which are commonly used for detecting metal elements need an atomizer, expensive inert gas and other material equipment when in use, so that the cost is high and the operation is inconvenient.
Nowadays, the liquid cathode glow discharge ionization device is basically used in the technical field of atomic spectrum analysis, the main structure of the liquid cathode glow discharge atomic emission spectrometry is basically consistent, and the device comprises an ionization source (light source generation part), a light splitting system, a detection system and a data processing system, wherein the ionization source generally comprises a metal anode, a sample inlet pipe, a graphite rod, a liquid discharge port and a waste liquid pool, wherein the sample inlet pipe and the metal rod anode in the ionization device are generally placed at an angle of 180 degrees, the sample inlet pipe and the liquid discharge port vertically penetrate through the bottom of the waste liquid pool, the graphite rod connected with the negative electrode of a power supply is placed on one side of the waste liquid pool, positive direct current voltage is generally applied to the metal rod anode, alternating current voltage is also applied to the metal rod, and a sample injection solution is applied to ground potential through the. In the existing research, due to the problems of collection and transmission of signal ions to be analyzed, a common liquid cathode glow discharge ionization device is only suitable for the technical field of atomic spectroscopy, is not beneficial to being used with a mass spectrometer, and cannot be used as a light source generating device in the technical field of atomic spectroscopy and the field of mass spectrometry. In the field of element detection, for example, in the detection of urban sewage, atomic spectrometry is generally only used for detecting heavy metals, and mass spectrometry is needed for detecting nonmetallic pollutants such as fluorine, arsenic and organochlorine pesticides, because the nonmetallic elements are difficult to be detected by the atomic spectrometry, so the prior art lacks of equipment capable of detecting multiple elements of the same pollutant.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a heating capillary liquid cathode glow discharge ionization device, ionization device both can be used to the atomic spectrum analysis and detect and can be used for mass spectrometry to detect, has improved the collection and the transmission effect of treating analysis signal ion, has expanded the detection sample scope to simple structure, easy and simple to handle, running cost hang down.
According to the utility model discloses a heating capillary liquid cathode glow discharge ionization device of first aspect embodiment includes: the ionization chamber is provided with a first opening and a second opening on two sides, and a third opening on the top; the waste liquid pool is positioned at the bottom of the ionization chamber, and a liquid outlet and a fourth opening which penetrate through the bottom of the ionization chamber are formed in the bottom of the waste liquid pool; the anode unit comprises an anode fixing block and a metal needle fixed on the anode fixing block, wherein an insulating layer is sleeved at one end outside the metal needle, and a positive electrode interface is arranged on the anode fixing block and is electrically connected with the metal needle; a spectrometer fitting assembly and a mass spectrometer fitting assembly, one of which is removably mounted on the ionization chamber;
the spectrometer matching assembly comprises a first sample introduction unit, a first sealing block and a spectrometer connecting block; the first sample introduction unit comprises a first sample introduction pipe and a first hollow graphite rod sleeved outside the first sample introduction pipe, a first fixed block is sleeved at the lower end of the first hollow graphite rod and is in sealing connection with a fourth opening, the first hollow graphite rod and the first sample introduction pipe are installed in the ionization chamber through the first fixed block, a spectrometer connecting block is in sealing connection with the second opening, a photon collecting chamber communicated with the ionization chamber is arranged on the spectrometer connecting block, and a spectrum focusing lens is arranged on the photon collecting chamber; the first sealing block is connected with the third opening in a sealing mode, the anode fixing block is connected with the first opening in a sealing mode, and the metal needle is fixed in the ionization chamber through the anode fixing block and arranged at intervals with the first hollow graphite rod;
the mass spectrometer matching assembly comprises a second sample introduction unit, a second sealing block and a mass spectrometer connecting block; the second sample introduction unit comprises a second sample introduction pipe and a second hollow graphite rod which is sequentially sleeved outside the second sample introduction pipe, a second fixed block is sleeved at the lower end of the second hollow graphite rod and is in sealing connection with the first opening, the second hollow graphite rod and the second sample introduction pipe are installed in the ionization chamber through the second fixed block, and the second hollow graphite rod is connected with a power supply cathode; the mass spectrometer connecting block is hermetically connected with the second opening, and an ion transmission interface communicated with the ionization chamber is arranged on the mass spectrometer connecting block; the second seal block with fourth opening sealing connection, the positive pole fixed block with third opening sealing connection, the metal needle passes through the positive pole fixed block is fixed in the ionization chamber, and with second cavity graphite rod interval sets up.
According to the utility model discloses heating capillary liquid cathode glow discharge ionization device has following beneficial effect at least: the ionization device can be used for atomic spectrum analysis and detection and mass spectrum analysis and detection, the range of a detected sample is expanded, and the applicability is wider.
According to some embodiments of the utility model, the metal needle with be 90 between the first injection pipe and place to 135, the metal needle with be 135 between the second injection pipe and place to 90.
According to some embodiments of the invention, the first hollow graphite rod is provided with a conical structure at an end thereof close to the outlet of the first sample inlet tube.
According to some embodiments of the utility model, the second cavity graphite rod is higher than the portion that the second advances appearance pipe export is the flaring structure, just the angle of flaring structure is about inward 45 jiaos.
According to some embodiments of the utility model, first cavity graphite rod surface is equipped with first resistance wire, second cavity graphite rod surface is equipped with the second resistance wire.
According to some embodiments of the present invention, the metal needle is close to an end cap of the anode fixing block is provided with an insulating layer.
According to some embodiments of the invention, the insulating layer may be filled with an auxiliary gas.
According to some embodiments of the invention, the photon collection chamber is provided with a vent.
According to some embodiments of the invention, the ionization chamber top is provided with a viewing window.
According to some embodiments of the present invention, the first hollow graphite rod and the first sample tube are fixed vertically in the ionization chamber, and the second hollow graphite rod and the second sample tube are fixed horizontally in the ionization chamber.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a heated capillary liquid cathode glow discharge ionization device for atomic spectroscopy detection according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a heated capillary liquid cathode glow discharge ionization device for mass spectrometry detection according to an embodiment of the present invention.
Reference numerals:
a waste liquid tank 200, a liquid discharge port 210;
the anode unit 300, the metal needle 310, the PEEK tube 320, the metal block 330 and the anode fixing block 340;
the spectrometer comprises a first sample introduction unit 410, a first sealing block 420, a spectrometer connecting block 430, a first sample introduction tube 411, a first hollow graphite rod 412, a first fixing block 413, a first resistance wire 414, a photon collection chamber 431, a spectrum focusing lens 432 and a vent 433;
the device comprises a second sample introduction unit 510, a second sealing block 520, a mass spectrometer connecting block 530, an ion transmission interface 531, a second sample introduction pipe 511, a second hollow graphite rod 512, a second fixing block 513 and a second resistance wire 514.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the top, bottom, left, right, etc., is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
The following describes a heated capillary liquid cathode glow discharge ionization device according to an embodiment of the present invention with reference to fig. 1 and 2.
The heating capillary liquid cathode glow discharge ionization device according to the embodiment of the utility model comprises an ionization chamber 100, wherein a first opening 110 and a second opening 120 are arranged at two sides, and a third opening 130 is arranged at the top; the waste liquid pool 200 is positioned at the bottom of the ionization chamber 100, and the bottom surface of the waste liquid pool 200 is provided with a liquid outlet 210 and a fourth opening 140 which penetrate through the bottom surface of the ionization chamber 100; the anode unit 300 comprises an anode fixing block 340 and a metal needle 310 fixed on the anode fixing block 340, wherein the anode fixing block 340 is provided with an anode interface, namely a metal block 330, and the metal block 330 is electrically connected with the metal needle 310; the spectrometer fitting assembly and the mass spectrometer fitting assembly, one of which is detachably mounted on the ionization chamber 100 as needed.
In some embodiments of the present invention, when the heated capillary liquid cathode glow discharge ionization device is used as a light source generating part in atomic spectroscopy detection, as shown in fig. 1, the spectrometer fitting assembly comprises a first sample introduction unit 410, a first sealing block 420 and a spectrometer connecting block 430. First appearance unit 410 includes first appearance pipe 411 and the first cavity graphite rod 412 of cover establishing outside first appearance pipe 411, and the pot head is equipped with first fixed block 413 under first cavity graphite rod 412, and first fixed block 413 and fourth opening 140 sealing connection will through first fixed block 413 first cavity graphite rod 412 and first appearance pipe 411 are installed in ionization chamber 100, and wherein, overflow when the solution that awaits measuring after being sent into first appearance pipe 411 and flow through first cavity graphite rod 412 and switch on with the power negative pole, have formed liquid cathode. The spectrometer connecting block 430 is hermetically connected with the second opening 120, a photon collecting chamber 431 communicated with the ionization chamber 100 is arranged on the spectrometer connecting block 430, a spectrum focusing lens 432 is arranged on the photon collecting chamber 431, and the spectrum focusing lens 432 is used for focusing photon signals in plasma generated by glow discharge and transmitting the photon signals to the detection system. The first sealing block 420 is hermetically connected to the third opening 130, the anode fixing block 340 is hermetically connected to the first opening 110, and at this time, the metal needle 310 forms a 90 ° angle with the first sample inlet tube 411.
In some embodiments of the present invention, when the heated capillary liquid cathode glow discharge ionization device is used as a light source generating part in mass spectrometry detection, as shown in fig. 2, the mass spectrometer fitting assembly comprises a second sample introduction unit 510, a second sealing block 520 and a mass spectrometer connecting block 530. The second sample introduction unit 510 includes a second sample introduction tube 511 and a second hollow graphite rod 512 sleeved outside the second sample introduction tube 511, a second fixed block 513 is sleeved at the lower end of the second hollow graphite rod 512, the second fixed block 513 is hermetically connected with the first opening 110, the second hollow graphite rod 512 and the second sample introduction tube 511 are installed in the ionization chamber 100 through the second fixed block 513, wherein when a solution to be detected is fed into the second sample introduction tube 511, the solution overflows and flows through the second hollow graphite rod 512 to be conducted with a power supply cathode, and a liquid cathode is formed. The mass spectrometer connecting block 530 is connected with the second opening 120 in a sealing manner, an ion transmission interface 531 communicated with the ionization chamber is arranged on the mass spectrometer connecting block 530, and the mass spectrometer connecting block 530 is used for transmitting ion signals in plasma generated by glow discharge to a mass spectrometer through the ion transmission interface 531 inside the mass spectrometer connecting block for analysis and detection. The second sealing block 520 is hermetically connected with the fourth opening 140, the anode fixing block 340 is hermetically connected with the third opening 130, and the metal needle 310 is fixed in the ionization chamber 100 through the anode fixing block 340 and is spaced from the second hollow graphite rod 512.
In some embodiments of the present invention, as shown in fig. 1 and 2, the first resistance wire 414 is disposed on the outer surface of the first hollow graphite rod 412, and the second resistance wire 514 is disposed on the outer surface of the second hollow graphite rod 512, which is connected to a power supply for heating the solution to be measured, so as to improve the ionization efficiency.
In some embodiments of the present invention, as shown in fig. 1 and fig. 2, the metal needle 310 is disposed in the peek tube 320, and the peek tube 320 can be filled with auxiliary gas (such as nitrogen, argon, helium, etc.) to help ionization, and the metal needle is cooled and isolated to generate plasma to interfere with the anode metal needle, which is beneficial to improving the discharging efficiency and the discharging stability.
In some embodiments of the present invention, as shown in fig. 1, the outlet of the first sample inlet pipe 411 is higher than the first hollow graphite rod 412, and one end of the first hollow graphite rod 412 near the outlet of the first sample inlet pipe 411 is a conical structure, which is beneficial to eliminating plasma fluctuation caused by liquid level change.
In some embodiments of the present invention, as shown in fig. 2, the second hollow graphite rod 512 is higher than the outlet of the second sample inlet pipe 511, and the part of the second hollow graphite rod 512 higher than the outlet of the second sample inlet pipe 511 is a flaring structure, and the angle of the flaring structure is an inward 45 ° angle, on one hand, it is favorable for the solution to be conducted with the power negative electrode after overflowing from the second sample inlet pipe 511 and avoid the deposition of the solution to be analyzed, and on the other hand, it is also favorable for matching the 135 ° angle formed by the second sample inlet pipe and the anode unit to collect and transmit the signal ions to be analyzed.
In some embodiments of the present invention, as shown in fig. 1, the photon collecting chamber 431 is provided with a vent 433 for introducing hot air to prevent the water vapor generated by the discharge from condensing on the lens to affect the observation result.
In some embodiments of the present invention, as shown in fig. 1 and fig. 2, the top of the ionization chamber 100 is provided with an observation window 150, so that the solution to be tested can be checked through the observation window 150 during the experiment.
In some embodiments of the present invention, the anode fixing block 340 is made of ceramic material, and has good isolation capability for radio frequency signals, so that the metal needle 310 can work in both direct current mode and radio frequency mode, and the detection application range of the ionization source can be expanded.
A heated capillary liquid cathode glow discharge ionization device according to an embodiment of the present invention is described in detail below in a specific embodiment with reference to fig. 1 and 2. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.
The heating capillary liquid cathode glow discharge ionization device according to the embodiment of the utility model comprises an ionization chamber 100, wherein a first opening 110 and a second opening 120 are arranged at two sides, and a third opening 130 is arranged at the top; the waste liquid pool 200 is positioned at the bottom of the ionization chamber 100, and the bottom surface of the waste liquid pool 200 is provided with a liquid outlet 210 and a fourth opening 140 which penetrate through the bottom surface of the ionization chamber 100; the anode unit 300 comprises an anode fixing block 340 and a metal needle 310 fixed on the anode fixing block 340, wherein the anode fixing block 340 is provided with an anode interface, namely a metal block 330, and the metal block 330 is electrically connected with the metal needle 310; the spectrometer fitting component and one of the spectrometer fitting components are detachably mounted on the ionization chamber 100 as required;
when the heated capillary liquid cathode glow discharge ionization device is used as a light source generation part in atomic spectrum detection, as shown in fig. 1, the spectrometer fitting assembly comprises a first sample introduction unit 410, a first sealing block 420 and a spectrometer connecting block 430. First appearance unit 410 includes first appearance pipe 411 and the first cavity graphite rod 412 of cover establishing outside first appearance pipe 411, and the pot head is equipped with first fixed block 413 under first cavity graphite rod 412, and first fixed block 413 and fourth opening 140 sealing connection will through first fixed block 413 first cavity graphite rod 412 and first appearance pipe 411 are installed in ionization chamber 100, and wherein, overflow when the solution that awaits measuring after being sent into first appearance pipe 411 and flow through first cavity graphite rod 412 and switch on with the power negative pole, have formed liquid cathode. The spectrometer connecting block 430 is hermetically connected with the second opening 120, a photon collecting chamber 431 communicated with the ionization chamber 100 is arranged on the spectrometer connecting block 430, a spectrum focusing lens 432 is arranged on the photon collecting chamber 431, and the spectrum focusing lens 432 is used for focusing photon signals in plasma generated by glow discharge and transmitting the photon signals to the detection system. The first sealing block 420 is hermetically connected to the third opening 130, the anode fixing block 340 is hermetically connected to another first opening 110, and at this time, the metal needle 310 forms a 90 ° angle with the first sample injection tube 411.
When the heated capillary liquid cathode glow discharge ionization device is used as a light source generation part in mass spectrometry detection, as shown in fig. 2, the mass spectrometer fitting assembly comprises a second sample introduction unit 510, a second sealing block 520 and a mass spectrometer connecting block 530. The second sample introduction unit 510 includes a second sample introduction tube 511 and a second hollow graphite rod 512 sleeved outside the second sample introduction tube 511, a second fixed block 513 is sleeved at the lower end of the second hollow graphite rod 512, the second fixed block 513 is hermetically connected with the first opening 110, the second hollow graphite rod 512 and the second sample introduction tube 511 are installed in the ionization chamber 100 through the second fixed block 513, wherein when a solution to be detected is fed into the second sample introduction tube 511, the solution overflows and flows through the second hollow graphite rod 512 to be conducted with a power supply cathode, and a liquid cathode is formed. The mass spectrometer connecting block 530 is connected with the second opening 120 in a sealing manner, an ion transmission interface 531 communicated with the ionization chamber is arranged on the mass spectrometer connecting block 530, and the mass spectrometer connecting block 530 is used for transmitting ion signals in plasma generated by glow discharge to a mass spectrometer through the ion transmission interface 531 inside the mass spectrometer connecting block for analysis and detection. The second sealing block 520 is hermetically connected with the fourth opening 140, the anode fixing block 340 is hermetically connected with the third opening 130, and the metal needle 310 is fixed in the ionization chamber 100 through the anode fixing block 340 and is spaced from the second hollow graphite rod 512.
The metal needle 310 and the first sample inlet pipe 411 are arranged at an angle of 90-135 degrees, and the metal needle 310 and the second sample inlet pipe 511 are arranged at an angle of 135-90 degrees.
In addition, as shown in fig. 1, the outlet of the first sample inlet pipe 411 is higher than the first hollow graphite rod 412, and one end of the first hollow graphite rod 412 close to the outlet of the first sample inlet pipe 411 is of a conical structure; further, as shown in fig. 2, the second hollow graphite rod 512 is higher than the outlet of the second sample introduction pipe 511, and the part of the second hollow graphite rod 512 higher than the outlet of the second sample introduction pipe 511 is a flared structure, and the angle of the flared structure is an inward 45 ° angle.
The first resistance wire 414 is disposed on the outer surface of the first hollow graphite rod 412, and the second resistance wire 514 is disposed on the outer surface of the second hollow graphite rod 512.
An insulating layer is sleeved on one end of the metal needle 310 close to the anode fixing block 340, and the insulating layer is made of PEEK material, and auxiliary gas can be introduced into the insulating layer.
The photon collection chamber 431 is provided with a vent 433; the top of the ionization chamber 100 is provided with an observation window 150; the anode fixing block 340 is made of ceramic.
The first hollow graphite rod 412 and the first sample introduction pipe 411 are vertically fixed in the ionization chamber 100, and the second hollow graphite rod 512 and the second sample introduction pipe 511 are horizontally fixed in the ionization chamber 100.
According to the heating capillary liquid cathode glow discharge ionization device provided by the embodiment of the utility model, at least the following effects can be achieved through the arrangement, the ionization device can realize the detachable installation of the related modules, the effect of being used for both atomic spectrum analysis and detection and mass spectrometry can be achieved through simply adjusting the related modules, the detection sample range is expanded, and the applicability is wider; the anode is fixed by a ceramic fixed block, so that the anode can work in a direct current mode and a radio frequency mode, and the detection application range of the ionization source can be expanded; a resistance wire which can be communicated with a power supply to heat the solution to be detected is added to the cathode, so that the ionization efficiency of the sample can be improved; auxiliary gas (such as nitrogen, argon, helium and the like) is introduced into the peek tube for fixing the anode metal needle to help ionization, the metal needle is cooled, and plasma generated by discharge is isolated from interfering the anode metal needle, so that the discharge efficiency and the discharge stability are improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A heated capillary liquid cathode glow discharge ionization apparatus comprising:
the ionization chamber is provided with a first opening and a second opening on two sides, and a third opening on the top;
the waste liquid pool is positioned at the bottom of the ionization chamber, and a liquid outlet and a fourth opening which penetrate through the bottom of the ionization chamber are formed in the bottom of the waste liquid pool;
the anode unit comprises an anode fixing block and a metal needle fixed on the anode fixing block, wherein a positive electrode interface is arranged on the anode fixing block and is electrically connected with the metal needle;
a spectrometer fitting assembly and a mass spectrometer fitting assembly, one of which is removably mounted on the ionization chamber;
wherein the content of the first and second substances,
the spectrometer matching assembly comprises a first sample introduction unit, a first sealing block and a spectrometer connecting block; the first sample introduction unit comprises a first sample introduction pipe and a first hollow graphite rod sleeved outside the first sample introduction pipe, a first fixed block is sleeved at the lower end of the first hollow graphite rod and is in sealing connection with the fourth opening, the first hollow graphite rod and the first sample introduction pipe are installed in the ionization chamber through the first fixed block, and the first hollow graphite rod is connected with a power supply cathode; the spectrometer connecting block is hermetically connected with the second opening, a photon collecting chamber communicated with the ionization chamber is arranged on the spectrometer connecting block, and a spectrum focusing lens is arranged on the photon collecting chamber; the first sealing block is connected with the third opening in a sealing mode, the anode fixing block is connected with the first opening in a sealing mode, and the metal needle is fixed in the ionization chamber through the anode fixing block and arranged at intervals with the first hollow graphite rod;
the mass spectrometer matching assembly comprises a second sample introduction unit, a second sealing block and a mass spectrometer connecting block; the second sample introduction unit comprises a second sample introduction pipe and a second hollow graphite rod sleeved outside the second sample introduction pipe, a second fixed block is sleeved at the lower end of the second hollow graphite rod and is in sealing connection with the first opening, the second hollow graphite rod and the second sample introduction pipe are installed in the ionization chamber through the second fixed block, and the second hollow graphite rod is connected with a power supply cathode; the mass spectrometer connecting block is hermetically connected with the second opening, and an ion transmission interface communicated with the ionization chamber is arranged on the mass spectrometer connecting block; the second seal block with fourth opening sealing connection, the positive pole fixed block with third opening sealing connection, the metal needle passes through the positive pole fixed block is fixed in the ionization chamber, and with second cavity graphite rod interval sets up.
2. The heated capillary liquid cathode glow discharge ionization device according to claim 1, wherein the metal needle is disposed at an angle of 90 ° to 135 ° with respect to the first sample injection tube when used for atomic spectroscopy; when the sample injection device is used for mass spectrometry, the metal needle and the second sample injection pipe are placed at an angle of 135-90 degrees.
3. The heated capillary liquid cathode glow discharge ionization device of claim 1 wherein the end of the first hollow graphite rod near the outlet of the first sample inlet tube is of a tapered configuration.
4. The heated capillary liquid cathode glow discharge ionization device of claim 1 wherein the portion of the second hollow graphite rod above the outlet of the second sample inlet tube is flared and the angle of the flared structure is about 45 ° inward.
5. The heated capillary tube liquid cathode glow discharge ionization device as claimed in any one of claims 1 to 4, wherein a first resistance wire is provided on the outer surface of the first hollow graphite rod, and a second resistance wire is provided on the outer surface of the second hollow graphite rod.
6. The heated capillary liquid cathode glow discharge ionization device of claim 1 wherein the end of said metal needle adjacent to said anode mounting block is sheathed with an insulating layer.
7. The heated capillary liquid cathode glow discharge ionization apparatus of claim 6 wherein an auxiliary gas is passed through said insulating layer.
8. A heated capillary liquid cathode glow discharge ionization device as claimed in claim 1 wherein said photon collection chamber is provided with a vent.
9. The heated capillary liquid cathode glow discharge ionization apparatus of claim 1 wherein a viewing window is provided in the top of said ionization chamber.
10. The heated capillary liquid cathode glow discharge ionization device of claim 1 wherein the first hollow graphite rod and the first sample introduction tube are vertically fixed within the ionization chamber and the second hollow graphite rod and the second sample introduction tube are horizontally fixed within the ionization chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066497.8U CN211376584U (en) | 2020-01-13 | 2020-01-13 | Heating capillary liquid cathode glow discharge ionization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066497.8U CN211376584U (en) | 2020-01-13 | 2020-01-13 | Heating capillary liquid cathode glow discharge ionization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211376584U true CN211376584U (en) | 2020-08-28 |
Family
ID=72173655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020066497.8U Expired - Fee Related CN211376584U (en) | 2020-01-13 | 2020-01-13 | Heating capillary liquid cathode glow discharge ionization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211376584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230059823A1 (en) * | 2021-08-19 | 2023-02-23 | 2 S Water Incorporated | Solution Glow Discharge Plasma Chamber with Lens |
-
2020
- 2020-01-13 CN CN202020066497.8U patent/CN211376584U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230059823A1 (en) * | 2021-08-19 | 2023-02-23 | 2 S Water Incorporated | Solution Glow Discharge Plasma Chamber with Lens |
| US11598727B1 (en) * | 2021-08-19 | 2023-03-07 | 2S Water Incorporated | Solution glow discharge plasma chamber with lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102103970B (en) | Microwave plasma generator and proton transfer mass spectrometer | |
| CN106596515B (en) | Pulse voltage drive-type arc discharge plasma source and Portable element spectrometer | |
| US10705023B2 (en) | Solution cathode glow discharge plasma-atomic emission spectrum apparatus and method capable of performing direct gas sample introduction and used for detecting heavy metal element | |
| CN104237178A (en) | Method and device for detecting trace metal elements in water body by using laser-induced breakdown spectroscopy assisted by direct current discharging vaporization | |
| CN106568833B (en) | A kind of liquid cathode glow discharge optical emission spectrometry device and method for heavy metal analysis | |
| Liu et al. | Determination of trace cadmium in rice by liquid spray dielectric barrier discharge induced plasma− chemical vapor generation coupled with atomic fluorescence spectrometry | |
| CN211376584U (en) | Heating capillary liquid cathode glow discharge ionization device | |
| Pohl et al. | Five years of innovations in development of glow discharges generated in contact with liquids for spectrochemical elemental analysis by optical emission spectrometry | |
| CN206057248U (en) | A kind of mass spectrometer of utilization microwave plasma torch ionization source | |
| CN103094050B (en) | A kind of sensitive glow discharge direct ionization method and device thereof | |
| CN204287133U (en) | For detecting the device of organic compound concentrations in soil | |
| CN103776818A (en) | Glow discharge-based plasma generator and spectrum detection system formed by same | |
| WO2005024387A3 (en) | Capillary-discharge based detector for chemical vapor monitoring | |
| US8362422B2 (en) | Sample feeding device for ion mobility spectrometer, method of using the same and ion mobility spectrometer | |
| CN107591310A (en) | A kind of graphite furnace Electrothermal vaporization feeding device ion gun and its plasma mass spectrograph | |
| US8969832B2 (en) | Electrothermal vaporization atomic fluorescence spectroscopy and spectrometer for determination of cadmium | |
| CN111063604A (en) | Heating capillary liquid cathode glow discharge ionization device | |
| Matusiewicz et al. | An electrothermal sample introduction system for ICP spectrometry | |
| CN102938360A (en) | Large-area in-situ testing explosive substance mass spectrum ionization source and application thereof | |
| CN201918358U (en) | Microwave plasma generator and proton transfer ionization mass-spectrometer | |
| CN112986219B (en) | Electrode sample introduction DBD micro plasma atomic emission spectrum detection system and method | |
| CN207233698U (en) | A kind of graphite furnace Electrothermal vaporization feeding device ion gun and its plasma mass spectrograph | |
| CN112098395B (en) | Dielectric barrier discharge plasma emission spectrometer based on online detection | |
| CN209167127U (en) | A kind of Atomic Emission Spectral Analysis device based on electric heating evaporation and point discharge | |
| CN106885840A (en) | A kind of corona discharge ionization migration spectrum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200828 Termination date: 20210113 |