CN206271659U - A kind of windowless mass spectrum ionization source - Google Patents
A kind of windowless mass spectrum ionization source Download PDFInfo
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- CN206271659U CN206271659U CN201621171322.3U CN201621171322U CN206271659U CN 206271659 U CN206271659 U CN 206271659U CN 201621171322 U CN201621171322 U CN 201621171322U CN 206271659 U CN206271659 U CN 206271659U
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- ionization source
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- ion transmission
- flow controller
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Abstract
The utility model discloses a kind of windowless mass spectrum ionization source, including ionization source cavity, also include windowless radio frequency vacuum uviol lamp, the inlet end of windowless radio frequency vacuum uviol lamp is connected with the outlet side of mass flow controller E, the inlet end of mass flow controller E is connected with discharge gas memory, windowless radio frequency vacuum uviol lamp is arranged at ionization source cavity top end, and the light-emitting window of windowless radio frequency vacuum uviol lamp stretches to ionization source inside cavity.The utility model avoids pollution of the traditional vacuum uviol lamp with optical window, effectively raises the stability of mass spectrometer sensitivity.
Description
Technical field
The utility model is related to mass spectrometer field, and in particular to a kind of windowless mass spectrum ionization source of automatic correction.
Background technology
Nowadays generally there is the organic pollution of various volatility, half volatile in environment periphery for the survival of mankind, than
Such as garbage burning factory periphery, chemical plant periphery etc..Although some pollutants content in the environment is very low, it has poison
Property, excitant and carcinogenicity, cause various acute and chronic infringements to human body, thus in environment various organic pollutions
Line monitoring receives the close attention of people, and is able to widely study.Mass spectrum with its sensitivity it is high, universality is good, detection is fast
Degree is fast, and qualitative, quantitative it is accurate the characteristics of, be more and more used for quick, the on-line analysis of environmental sample.With 70 eV
The electron impact ionization source of energy（EI）It is the ionization source commonly used in on-line mass spectroscopy, every kind of organic matter has under this ionization source
Feature spectrogram, being capable of accurately qualitative analysis.But, EI sources ionize organic matter when produce more fragment peak so that it
Identification of spectrogram is difficult during analysis complex mixture, constrains its development.
In order to reduce spectrum unscrambling difficulty, Hou Keyong [Chinese invention patents:200610011793.2] and Zheng Peichao [middle promulgateds by the State Council
Bright patent application:200810022557.X] use VUV（VUV）Lamp is had to as mass spectrum ionization source during measurement organic matter
To the molecular ion peak of organic matter, spectrogram is simplified, quick qualitative analysis can be carried out according to molecular weight.But, it is this to have light
In running hours, its optical window easily pollutes the vacuum UV lamp of window, and causes sensitivity to decline, and long-term use causes quantitative essence
Degree is deteriorated.
Utility model content
The utility model discloses a kind of windowless mass spectrum ionization source, being substituted with windowless radio frequency vacuum uviol lamp traditional has light
Window vacuum UV lamp, it is to avoid the pollution of optical window, the effective stability for improving mass spectrometer.
To achieve the above object, the technical solution of the utility model is：
A kind of windowless mass spectrum ionization source, including ionization source cavity, also including windowless radio frequency vacuum uviol lamp, windowless radio frequency is true
The inlet end of empty uviol lamp is connected with the outlet side of mass flow controller E, inlet end and the electric discharge gas of mass flow controller E
Body memory is connected, windowless radio frequency vacuum uviol lamp is arranged at ionization source cavity top end, and windowless radio frequency vacuum uviol lamp goes out
Optical port stretches to ionization source inside cavity；Be provided with the ionization source cavity Ion Extraction electrode, ion transmission electrode group and
Pore electrod, the ion transmission electrode group includes some pieces of ion transmission electrodes, Ion Extraction electrode, ion transmission electrode and hole
Be between electrode between parallel, coaxial placement, and adjacent Ion Extraction electrode and ion transmission electrode, ion transmission electrode with
Separated by dead ring between ion transmission electrode, between ion transmission electrode and pore electrod；The ionization source cavity and
A piece of dead ring both sides offer sample holes, and sample introduction capillary E and sample introduction capillary D is respectively from the ionization source cavity and described
The both sides of first piece dead ring enter ionization source inside cavity by the way that aperture is interspersed, and the sample introduction end of sample introduction capillary E is powered with two
The a port of magnet valve E is connected, and another port of two three-way electromagnetic valve E is connected with actual sample source of the gas, and sample introduction capillary D's enters
Sample end is connected with a port of two three-way electromagnetic valve D, two another port of three-way electromagnetic valve D and going out for mass flow controller D
Gas end is connected, and the inlet end of mass flow controller D is connected with standard sample memory.
Further, the two three-way electromagnetic valves E, two three-way electromagnetic valve D, mass flow controller E and mass flow controller D
It is connected with computer control system, the computer control system is used to control two three-way electromagnetic valve E, two three-way electromagnetic valve D, quality stream
The break-make and flow of amount controller E and mass flow controller D.
Further, radio-frequency coil is provided with the windowless radio frequency vacuum uviol lamp, the radio-frequency coil is used to produce
The radio-frequency voltage of ultra-high frequency makes the gas ionization that discharge gas memory is imported in windowless radio frequency vacuum uviol lamp, so as to produce
Photon.
Further, Ion Extraction electrode, ion transmission electrode and pore electrod are stainless steel plate type electrode, and the ion draws
Go out and DC voltage be loaded with electrode and pore electrod, between adjacent Ion Extraction electrode and ion transmission electrode, ion transmission
Be provided between electrode and ion transmission electrode, between ion transmission electrode and pore electrod resistance identical resistance for point
Pressure.
Further, some pieces of ion transmission electrode thickness, internal diameter and external diameter all sames.
Further, sample introduction capillary E and sample introduction capillary D is the capillary of length and internal diameter all same.
Windowless mass spectrum ionization source of the present utility model, by using windowless radio frequency vacuum uviol lamp, due to avoiding tradition
Pollution of the vacuum UV lamp with optical window, effectively raises the stability of mass spectrometer sensitivity, and long service life, can be wide
The general continuous monitoring for object, especially has wide application in the continuous monitoring field of environmental contaminants
Prospect.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1- discharge gas memories, 2- mass flow controllers E, 3- is windowless radio frequency vacuum uviol lamp, 4- radio frequency lines
Circle, 5- Ion Extraction electrodes, three-way electromagnetic valve D, 8- mass flow controller D, the 9- standard sample of 6- sample introduction capillaries D, 7- two is deposited
Reservoir, 10- ion transmission electrodes, 11- ionization source cavitys, 12- pore electrods, 13- ions, 14- vacuum-ultraviolet lights, 15- dead rings,
The three-way electromagnetic valve E of 16- sample introduction capillaries E, 17- two.
Specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but protection domain of the present utility model be not limited to
Lower embodiment.
As shown in figure 1, a kind of windowless mass spectrum ionization source, including ionization source cavity 11 and windowless radio frequency vacuum uviol lamp 3, nothing
The inlet end of window radio frequency vacuum uviol lamp 3 is connected with the outlet side of mass flow controller E2, and mass flow controller E2's enters
Gas end is connected with discharge gas memory 1, and windowless radio frequency vacuum uviol lamp 3 is fixed on ionization source cavity 11 and pushes up by CF35 flanges
Hold, and the light-emitting window of windowless radio frequency vacuum uviol lamp 3 is stretched to inside ionization source cavity 11, the vacuum-ultraviolet light that it sends 14
Inside ionization source cavity 11, the windowless radio frequency vacuum uviol lamp 3 of the present embodiment is using the RF Powered of EUV-X-L 627
Flow Lamp, are the discharge lamp of radio-frequency drive, without optical window, radio-frequency coil 4, radio frequency are provided with windowless radio frequency vacuum uviol lamp 3
Coil 4 is used for the gas for producing the radio-frequency voltage of ultra-high frequency to make discharge gas memory 1 import in windowless radio frequency vacuum uviol lamp 3
Volume ionization, so as to produce photon, luminous flux is 1015 Photons/second.
Wherein, Ion Extraction electrode 5, ion transmission electrode group and pore electrod 12, ion are provided with ionization source cavity 11
Transmission electrode group includes 4 pieces of ion transmission electrodes 10, is between Ion Extraction electrode 5, ion transmission electrode 10 and pore electrod 12
Between parallel, coaxial placement, and adjacent Ion Extraction electrode 5 and ion transmission electrode 10, ion transmission electrode 10 and ion
Separated by dead ring 15 between transmission electrode 10, between ion transmission electrode 10 and pore electrod 12；The He of ionization source cavity 11
First piece dead ring both sides offer sample holes, and sample introduction capillary E16 and sample introduction capillary D6 is respectively from the ionization source cavity
11 and the both sides of the first piece dead ring enter inside ionization source cavity 11 by the way that aperture is interspersed, sample introduction capillary E16's enters
Sample end is connected with a port of two three-way electromagnetic valve E17, another port and the actual sample source of the gas phase of two three-way electromagnetic valve E17
Even, the sample introduction end of sample introduction capillary D6 is connected with a port of two three-way electromagnetic valve D7, another port of two three-way electromagnetic valve D7
Outlet side with mass flow controller D8 is connected, and the inlet end of mass flow controller D8 is connected with standard sample memory 9,
The separate sample introduction of actual sample to be measured and standard sample can be realized by sample introduction capillary E16 and sample introduction capillary D6.
To realize automatically controlling for sample introduction, two three-way electromagnetic valve E17, two three-way electromagnetic valve D7, mass flow controller E2 and matter
Amount flow controller D8 is connected with computer control system, and computer control system is used to control two three-way electromagnetic valve E17, two to be powered
The break-make and flow of magnet valve D7, mass flow controller E2 and mass flow controller D8.
Ion Extraction electrode 5, ion transmission electrode 10 and pore electrod 12 are stainless steel plate type electrode, 4 blocks of ion transmission electricity
The thickness of pole 10, internal diameter and external diameter all same, are loaded with DC voltage on Ion Extraction electrode 5 and pore electrod 12, it is adjacent from
Between sub- extraction electrode 5 and ion transmission electrode 10, between ion transmission electrode 10 and ion transmission electrode 10, ion transmission electricity
Resistance identical resistance is welded between pole 10 and pore electrod 12 for partial pressure.
The sample introduction capillary E16 and sample introduction capillary D6 of the present embodiment are the capillary of length and internal diameter all same, to protect
Mass spectrometer sample size is identical during card two-way independent sample introduction, and the pressure in ionization source cavity 11 is consistent.
This is windowless mass spectrum ionization source, by using windowless radio frequency vacuum uviol lamp, due to avoiding traditional vacuum uviol lamp
Pollution with optical window, effectively raises the stability of mass spectrometer sensitivity, and long service life.
Claims (5)
1. a kind of windowless mass spectrum ionization source, including ionization source cavity, it is characterised in that：
Also include windowless radio frequency vacuum uviol lamp（3）, windowless radio frequency vacuum uviol lamp（3）Inlet end and mass flow controller
E（2）Outlet side be connected, mass flow controller E（2）Inlet end and discharge gas memory（1）It is connected, windowless radio frequency is true
Empty uviol lamp（3）It is arranged at ionization source cavity（11）Top, and windowless radio frequency vacuum uviol lamp（3）Light-emitting window stretch to ionization
Source chamber body（11）It is internal；
The ionization source cavity（11）Inside it is provided with Ion Extraction electrode（5）, ion transmission electrode group and pore electrod（12）, it is described
Ion transmission electrode group includes some pieces of ion transmission electrodes（10）, Ion Extraction electrode（5）, ion transmission electrode（10）And hole
Electrode（12）Between be in parallel, coaxial placement, and adjacent Ion Extraction electrode（5）With ion transmission electrode（10）Between, from
Sub- transmission electrode（10）With ion transmission electrode（10）Between, ion transmission electrode（10）With pore electrod（12）Between by exhausted
Edge ring（15）Separate；
The ionization source cavity（11）Sample holes, sample introduction capillary E are offered with first piece dead ring both sides（16）With sample introduction hair
Tubule D（6）Respectively from the ionization source cavity（11）With the first piece dead ring（15）Both sides enter by the way that aperture is interspersed
Ionization source cavity（11）Inside, sample introduction capillary E（16）Sample introduction end and two three-way electromagnetic valve E（17）A port be connected, two
Three-way electromagnetic valve E（17）Another port be connected with actual sample source of the gas, sample introduction capillary D（6）Sample introduction end and two energization magnetic
Valve D（7）A port be connected, two three-way electromagnetic valve D（7）Another port and mass flow controller D（8）Outlet side phase
Even, mass flow controller D（8）Inlet end and standard sample memory（9）It is connected.
2. windowless mass spectrum ionization source according to claim 1, it is characterised in that：
The two three-way electromagnetic valves E（17）, two three-way electromagnetic valve D（7）, mass flow controller E（2）With mass flow controller D（8）
It is connected with computer control system, the computer control system is used to control two three-way electromagnetic valve E（17）, two three-way electromagnetic valve D
（7）, mass flow controller E（2）With mass flow controller D（8）Break-make and flow.
3. windowless mass spectrum ionization source according to claim 1, it is characterised in that：
Ion Extraction electrode（5）, ion transmission electrode（10）And pore electrod（12）It is stainless steel plate type electrode, the Ion Extraction
Electrode（5）And pore electrod（12）On be loaded with DC voltage, adjacent Ion Extraction electrode（5）With ion transmission electrode（10）It
Between, ion transmission electrode（10）With ion transmission electrode（10）Between, ion transmission electrode（10）With pore electrod（12）Between
Resistance identical resistance is provided with for partial pressure.
4. windowless mass spectrum ionization source according to claim 1, it is characterised in that：
The windowless radio frequency vacuum uviol lamp（3）Inside it is provided with radio-frequency coil（4）, the radio-frequency coil（4）For producing superelevation
The radio-frequency voltage of frequency makes discharge gas memory（1）Import windowless radio frequency vacuum uviol lamp（3）In gas ionization, so as to produce
Third contact of a total solar or lunar eclipse.
5. the windowless mass spectrum ionization source according to claim 2 or 4, it is characterised in that：Some pieces of ion transmission electrodes（10）
Thickness, internal diameter and external diameter all same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201621171322.3U CN206271659U (en) | 2016-10-26 | 2016-10-26 | A kind of windowless mass spectrum ionization source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621171322.3U CN206271659U (en) | 2016-10-26 | 2016-10-26 | A kind of windowless mass spectrum ionization source |
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| CN206271659U true CN206271659U (en) | 2017-06-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956750A (en) * | 2018-06-01 | 2018-12-07 | 清华大学深圳研究生院 | A kind of ion mobility spectrometry apparatus working in low air pressure condition |
| CN109887831A (en) * | 2017-12-06 | 2019-06-14 | 中国科学院大连化学物理研究所 | A method of slowing down the decaying of mass spectrum ionized region ion source |
| CN109887829A (en) * | 2017-12-06 | 2019-06-14 | 中国科学院大连化学物理研究所 | A kind of ionization source device detected simultaneously based on VUV lamp negative ions |
-
2016
- 2016-10-26 CN CN201621171322.3U patent/CN206271659U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887831A (en) * | 2017-12-06 | 2019-06-14 | 中国科学院大连化学物理研究所 | A method of slowing down the decaying of mass spectrum ionized region ion source |
| CN109887829A (en) * | 2017-12-06 | 2019-06-14 | 中国科学院大连化学物理研究所 | A kind of ionization source device detected simultaneously based on VUV lamp negative ions |
| CN108956750A (en) * | 2018-06-01 | 2018-12-07 | 清华大学深圳研究生院 | A kind of ion mobility spectrometry apparatus working in low air pressure condition |
| CN108956750B (en) * | 2018-06-01 | 2021-07-27 | 清华大学深圳研究生院 | Ion mobility spectrometry device working under low-pressure condition |
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