CN104465297B - Gas control method of parallel double-ion migration tube - Google Patents
Gas control method of parallel double-ion migration tube Download PDFInfo
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- CN104465297B CN104465297B CN201310422399.8A CN201310422399A CN104465297B CN 104465297 B CN104465297 B CN 104465297B CN 201310422399 A CN201310422399 A CN 201310422399A CN 104465297 B CN104465297 B CN 104465297B
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- migration tube
- gas
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- tube
- anion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
Abstract
The invention relates to a gas control method of a parallel double-ion migration tube. The parallel double-ion migration tube includes a migration tube which can detect positive ions and a migration tube which can detect negative ions, wherein each migration tube needs steady drift gas flow and carrier gas flow; the carrier gas flows through a sample injector and carries sample gas in the sample injector, and the carrier gas and the sample gas respectively enter the positive ion migration tube and the negative ion migration tube simultaneously so as to be analyzed; after being combined in the ion migration tubes, the drift gas and the carrier gas are discharged from a gas discharging opening of the positive ion migration tube and a gas discharging opening of the negative ion migration tube respectively; flowmeters with regulating valves are utilized to adjust and control shift gas and discharging-gas flow and carrier gas flow of the positive ion migration tube and the negative ion migration tube in the parallel double-ion migration tube, so that the flow rate and proportion of the carrier gas that enters the positive ion migration tube and the negative ion migration tube can be indirectly adjusted and controlled; and therefore, stable drift gas and carrier gas can be provided for the positive ion migration tube and the negative ion migration tube, and simultaneous feeding and simultaneous positive and negative ion detection can be realized. The gas control method of the parallel double-ion migration tube of the invention has the advantages of simple and practical control and adjustment, low cost and wide application range.
Description
Technical field
The present invention relates to the technology being analyzed using ion mobility spectrometry, specifically a kind of gas of parallel connection double ion migration tube
Body controlling means.
Background technology
Ion mobility spectrometry works under atmospheric pressure, generally includes the critical pieces such as injector and transference tube, ion moves
Moving running of pipe needs clean, stable drift throughput and carrier gas flux, and carrier gas flows through from injector, by the sample injector
Product gas is carried along into transference tube and is analyzed, drift gas and after carrier gas merges in transference tube, by ion migration
The air vent of pipe is discharged.
Double ion migration tube in parallel includes detecting the migration tube of cation and the migration tube of anion simultaneously, each migration
Pipe is required for stable drift throughput and carrier gas flux.Wherein carrier gas is flow through, is taken the sample gas injector from injector
Band, cation migration tube is simultaneously entered respectively by threeway and anion migration tube is analyzed, float gas and carrier gas is moved in ion
Move the air vent passing through cation migration tube after merging in pipe respectively and the air vent of anion migration tube is discharged.
Difference, its cation migration tube and anion due to itself and gas circuit assembly and connection of double ion migration tube in parallel
Resistance in migration tube has difference, therefore enters into the carrier gas flux of each migration tube by the distribution of threeway, can be unstable
Fixed and inaccurate, sample is entered by threeway and cannot be adjusted using band band between cation migration tube and anion migration tube again simultaneously
The effusion meter of section valve, therefore, only adopts other methods, to manage regulation and control and to enter into cation migration tube and anion migration tube
Load volume, the sample size that guarantee enters into migration tube is continuous and consistent, reaches the purpose simultaneously analyzed.
A kind of gas control method of parallel connection double ion migration tube of the present invention is it is simply that in order to solve to enter into positive and negative moving
Move the carrier gas flux size of pipe and ratio, provide stable drift gas and carrier gas for each positive and negative migration tube, realize simultaneously sample introduction,
Carry out the target of negative ions detection simultaneously.
Content of the invention
The running of transference tube needs clean, stable drift throughput and carrier gas flux, carrier gas flows through from injector,
Sample gas in injector is carried along into transference tube be analyzed, drift gas and carrier gas merge in transference tube
Afterwards, discharged by the air vent of transference tube.
Double ion migration tube in parallel includes detecting the migration tube of cation and the migration tube of anion simultaneously, each migration
Pipe is required for stable drift throughput and carrier gas flux.Wherein carrier gas is flow through, is taken the sample gas injector from injector
Band, simultaneously enter cation migration tube respectively and anion migration tube is analyzed, drift gas and carrier gas are closed in transference tube
And after, the air vent of the air vent and anion migration tube that pass through cation migration tube respectively is discharged.
By 5 effusion meters with regulating valve, to regulate and control each positive and negative ion migration tube in double ion migration tube in parallel
Drift gas and discharge throughput, and carrier gas flux, come carrier gas flux size and ratio that indirect adjustments and controlss enter into positive and negative migration tube
Example, provides stable drift gas and carrier gas for each positive and negative migration tube, realize simultaneously sample introduction, carry out negative ions detection simultaneously
Target.
The gas control method of the double ion migration tube in parallel of the present invention, regulates and controls simple and practical, low cost, the scope of application
Extensively.
Brief description
The present invention is further detailed explanation below in conjunction with the accompanying drawings：
A kind of gas control method of Fig. 1 parallel connection double ion migration tube, including 1 air, 2 check valves, 3 air pumps, 4 are dried
Pipe, 5 particulate filters, the effusion meter with regulating valve for the 6-1, for adjusting the drift gas of cation migration tube, the flow with regulating valve for the 6-2
Meter, for adjust anion migration tube drift gas, 7 effusion meters with regulating valve, for adjust carrier gas, 8 cation migration tubes, 9 negative from
Sub- migration tube, 10 doping agent containers, 11 injectors, 12 sampling sheets, the effusion meter with regulating valve for the 13-1, for adjusting cation migration
The discharge gas of pipe, the effusion meter with regulating valve for the 13-2, for adjusting the discharge gas of anion migration tube.
Specific embodiment
Drift gas is connected with the gas access of air pump 3 by pipeline after check valve 2 with carrier gas source of the gas air 1, air
The gas outlet of pump 3 passes through the effusion meter through first band regulating valve for the pipeline respectively（6-1,6-2）With cation migration tube 8 and bear from
The drift gas entrance of sub- migration tube 9 is connected, simultaneously the gas outlet of air pump 3 pass through pipeline through the second effusion meter 7 with regulating valve,
Injector 11 is connected with the carrier gas inlet of cation migration tube 8 and anion migration tube 9 respectively；
The air vent of cation migration tube 8 and anion migration tube 9 passes through pipeline respectively through the 3rd flow with regulating valve
Meter（13-1,13-2）It is connected with the gas access of air pump 3；
In the gas outlet of air pump 3 and the effusion meter of first band regulating valve（6-1,6-2）With the second stream with regulating valve
It is sequentially provided with drying tube 4, particulate filter 5 between gauge 7；
Pipeline between the second effusion meter 7 with regulating valve and injector 11 is provided with doping agent container 10；In injector
11 sample introduction spigot is provided with sampling sheet 12.
Its flow rate adjusting method is to fully open two the 3rd effusion meters with regulating valve first（13-1,13-2）, that is, complete
Entirely open the discharge gas discharging gas and anion migration tube of cation migration tube, then adjust two first band regulating valves respectively
Effusion meter（6-1,6-2）Make the drift throughput of cation migration tube, the drift throughput of anion migration tube be predetermined value, adjust
Second effusion meter 7 with regulating valve, carrier gas flux is made to be predetermined value；Turn the discharge QI KOU phase with cation migration tube more respectively down
The 3rd effusion meter 13-1 with regulating valve connecting, makes gas outlet flow float throughput and required carrier gas flux sum for it；Adjust
Little the 3rd effusion meter 13-2 with regulating valve being connected with the discharge QI KOU of anion migration tube, makes gas outlet flow float for it
Throughput and required carrier gas flux sum；Carrier gas shunts according to a certain percentage, has respectively entered cation migration tube and anion
Migration tube.
In analysis, it is loaded with the sampling sheet 12 insertion injector 11 of sample, the sample being formed through injector 11 heating vaporization
Product gas is taken out of by the carrier gas flowing through, and is sent to cation migration tube 8 and anion migration tube 9 is analyzed.
Embodiment 1
Fully open two the 3rd effusion meters with regulating valve（13-1,13-2）, that is, fully open cation migration tube
Discharge the discharge gas of gas and anion migration tube, then adjust the effusion meter of two first band regulating valves respectively（6-1,6-2）Make
The drift throughput of cation migration tube, the drift throughput of anion migration tube are 600ml/min, adjust the second stream with regulating valve
Gauge 7, carrier gas flux is made to be 400ml/min；Turn the 3rd band being connected with the discharge QI KOU of cation migration tube more respectively down
The effusion meter 13-1 of regulating valve, makes gas outlet flow float throughput and required carrier gas flux sum, i.e. 960ml/min for it；Adjust
Little the 3rd effusion meter 13-2 with regulating valve being connected with the discharge QI KOU of anion migration tube, makes gas outlet flow float for it
Throughput and required carrier gas flux sum, i.e. 640ml/min；Carrier gas shunts according to a certain percentage, have respectively entered cation moves
Move pipe and anion migration tube, the split ratio of carrier gas is 1：9.
In analysis, it is loaded with the sampling sheet 12 insertion injector 11 of 1 milligram of propofol sample, heats vapour through injector 11
Change the sample gas being formed to be taken out of by the carrier gas flowing through, be sent to cation migration tube 8 and anion migration tube 9 is analyzed.
Result cation migration tube 8 obtains the signal of very high propofol sample, and anion migration tube 9 obtains relatively low propofol sample
Signal.
Embodiment 2
Fully open two the 3rd effusion meters with regulating valve（13-1,13-2）, that is, fully open cation migration tube
Discharge the discharge gas of gas and anion migration tube, then adjust the effusion meter of two first band regulating valves respectively（6-1,6-2）Make
The drift throughput of cation migration tube, the drift throughput of anion migration tube are 800ml/min, adjust the second stream with regulating valve
Gauge 7, carrier gas flux is made to be 400ml/min；Turn the 3rd band being connected with the discharge QI KOU of cation migration tube more respectively down
The effusion meter 13-1 of regulating valve, makes gas outlet flow float throughput and required carrier gas flux sum, i.e. 840ml/min for it；Adjust
Little the 3rd effusion meter 13-2 with regulating valve being connected with the discharge QI KOU of anion migration tube, makes gas outlet flow float for it
Throughput and required carrier gas flux sum, i.e. 1160ml/min；Carrier gas shunts according to a certain percentage, have respectively entered cation moves
Move pipe and anion migration tube, the split ratio of carrier gas is 9：1.
In analysis, it is loaded with the sampling sheet 12 insertion injector 11 of 1 milligram of pesticide carbofuran sample, adds through injector 11
The sample gas that hot vapourization is formed is taken out of by the carrier gas flowing through, and is sent to cation migration tube 8 and anion migration tube 9 is carried out point
Analysis.Result cation migration tube 8 obtains the signal of relatively low pesticide carbofuran sample, and anion migration tube 9 obtains higher agriculture
The signal of medicine carbofuran sample.
Embodiment 3
Fully open two the 3rd effusion meters with regulating valve（13-1,13-2）, that is, fully open cation migration tube
Discharge the discharge gas of gas and anion migration tube, then adjust the effusion meter of two first band regulating valves respectively（6-1,6-2）Make
The drift throughput of cation migration tube, the drift throughput of anion migration tube are 600ml/min, adjust the second stream with regulating valve
Gauge 7, carrier gas flux is made to be 400ml/min；Turn the 3rd band being connected with the discharge QI KOU of cation migration tube more respectively down
The effusion meter 13-1 of regulating valve, makes gas outlet flow float throughput and required carrier gas flux sum, i.e. 760ml/min for it；Adjust
Little the 3rd effusion meter 13-2 with regulating valve being connected with the discharge QI KOU of anion migration tube, makes gas outlet flow float for it
Throughput and required carrier gas flux sum, i.e. 840ml/min；Carrier gas shunts according to a certain percentage, have respectively entered cation moves
Move pipe and anion migration tube, the split ratio of carrier gas is 4：6.
In analysis, it is loaded with the sampling sheet 12 insertion injector 11 of 1 microgram pesticide chlopyrifos sample, adds through injector 11
The sample gas that hot vapourization is formed is taken out of by the carrier gas flowing through, and is sent to cation migration tube 8 and anion migration tube 9 is carried out point
Analysis.Result cation migration tube 8 obtains the signal of relatively low pesticide chlopyrifos sample, and anion migration tube 9 obtains higher agriculture
The signal of medicine chlopyrifos sample.
Embodiment 4
Fully open two the 3rd effusion meters with regulating valve（13-1,13-2）, that is, fully open cation migration tube
Discharge the discharge gas of gas and anion migration tube, then adjust the effusion meter of two first band regulating valves respectively（6-1,6-2）Make
The drift throughput of cation migration tube, the drift throughput of anion migration tube are 800ml/min, adjust the second stream with regulating valve
Gauge 7, carrier gas flux is made to be 400ml/min；Turn the 3rd band being connected with the discharge QI KOU of cation migration tube more respectively down
The effusion meter 13-1 of regulating valve, makes gas outlet flow float throughput and required carrier gas flux sum, i.e. 1040ml/min for it；Adjust
Little the 3rd effusion meter 13-2 with regulating valve being connected with the discharge QI KOU of anion migration tube, makes gas outlet flow float for it
Throughput and required carrier gas flux sum, i.e. 960ml/min；Carrier gas shunts according to a certain percentage, have respectively entered cation moves
Move pipe and anion migration tube, the split ratio of carrier gas is 6：4.
In analysis, it is loaded with the sampling sheet 12 insertion injector 11 of 1 milligram of pesticide chlopyrifos sample, adds through injector 11
The sample gas that hot vapourization is formed is taken out of by the carrier gas flowing through, and is sent to cation migration tube 8 and anion migration tube 9 is carried out point
Analysis.The signal of the higher pesticide chlopyrifos sample of result cation migration tube 8, anion migration tube 9 obtains relatively low pesticide poison
The signal of dead Tickss sample.
Claims (8)
1. a kind of gas control method of parallel connection double ion migration tube,
Double ion migration tube in parallel includes the migration tube of a detection cation simultaneously being detected and a detection anion
Migration tube, each migration tube is required for stablizing controlled drift throughput and carrier gas flux；
Wherein carrier gas flow through, the sample gas injector carried from injector, simultaneously enter respectively cation migration tube and
Anion migration tube is analyzed；
Drift gas and after carrier gas merges in transference tube, respectively by air vent and the anion migration tube of cation migration tube
Air vent discharge；
Described parallel connection double ion migration tube structure be：Drift gas and carrier gas source of the gas（1）Through check valve（2）Pass through pipeline and air afterwards
Pump（3）Gas access be connected, air pump（3）Gas outlet respectively pass through the effusion meter through first band regulating valve for the pipeline
（6-1,6-2）With cation migration tube（8）With anion migration tube（9）Drift gas entrance be connected, air pump simultaneously（3）Gas
Outlet is by pipeline through the second effusion meter with regulating valve（7）, injector（11）Respectively with cation migration tube（8）And anion
Migration tube（9）Carrier gas inlet be connected；
Cation migration tube（8）With anion migration tube（9）Air vent respectively pass through pipeline through the 3rd flow with regulating valve
Meter（13-1,13-2）With air pump（3）Gas access be connected；
By adjusting the effusion meter of two first band regulating valves（6-1,6-2）, two the 3rd effusion meters with regulating valve（13-1,
13-2）To regulate and control the drift gas of each positive and negative ion migration tube and discharge throughput in double ion migration tube in parallel, to carry out indirect adjustments and controlss
Enter into carrier gas flux size and the ratio of positive and negative migration tube, provide stable drift gas and carrier gas for each positive and negative migration tube,
Realize simultaneously sample introduction, carry out the target of negative ions detection simultaneously.
2. gas control method as claimed in claim 1 it is characterised in that：Cation migration tube（8）Drift gas entrance and row
Exhaust outlets, respectively connected the effusion meter with regulating valve, for the flow adjusting drift gas and discharge gas；
Anion migration tube（9）Drift gas entrance and row exhaust outlets, respectively connected the effusion meter with regulating valve, for adjust drift
Gas and the flow discharging gas.
3. gas control method as claimed in claim 1 it is characterised in that：Double ion migration tube in parallel shares a carrier gas gas
Road；One effusion meter with regulating valve（7）It is connected with carrier gas, for adjusting the flow of carrier gas；Carrier gas flows through from injector, by sample introduction
Sample gas in device carries, simultaneously enter cation migration tube respectively by threeway and anion migration tube is analyzed.
4. gas control method as claimed in claim 1 it is characterised in that：Its flow rate adjusting method is to fully open first
Two the 3rd effusion meters with regulating valve（13-1,13-2）, that is, fully open the discharge gas of cation migration tube and anion move
Move the discharge gas of pipe, then adjust the effusion meter of two first band regulating valves respectively（6-1,6-2）Make the drift of cation migration tube
Throughput, the drift throughput of anion migration tube are predetermined value, adjust the second effusion meter with regulating valve（7）, make carrier gas flux
For predetermined value；Turn the 3rd effusion meter with regulating valve being connected with the discharge QI KOU of cation migration tube more respectively down（13-
1）, make gas outlet flow float throughput and required carrier gas flux sum for it；Turn the discharge QI KOU phase with anion migration tube down
The 3rd effusion meter with regulating valve connecting（13-2）, make gas outlet flow float throughput and required carrier gas flux sum for it；
Carrier gas shunts according to a certain percentage, has respectively entered cation migration tube and anion migration tube.
5. gas control method as claimed in claim 4 it is characterised in that：Enter into cation migration tube and anion migration
The carrier gas shunt ratio of pipe is 1：9 to 9：Between 1.
6. gas control method as claimed in claim 4 it is characterised in that：Enter into cation migration tube and anion migration
The carrier gas shunt ratio of pipe, optimum is 4：6 to 6：Between 4.
7. gas control method as claimed in claim 4 it is characterised in that：In air pump（3）Gas outlet and first band
The effusion meter of regulating valve（6-1,6-2）With the second effusion meter with regulating valve（7）Between be sequentially provided with drying tube（4）, granule mistake
Filter（5）,
In the second effusion meter with regulating valve（7）And injector（11）Between pipeline be provided with doping agent container（10）；In sample introduction
Device（11）Sample introduction spigot be provided with sampling sheet（12）.
8. gas control method as claimed in claim 1 it is characterised in that：Described cation migration tube and anion migration tube
Structure identical.
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| CN201310422399.8A CN104465297B (en) | 2013-09-16 | 2013-09-16 | Gas control method of parallel double-ion migration tube |
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| CN201310422399.8A CN104465297B (en) | 2013-09-16 | 2013-09-16 | Gas control method of parallel double-ion migration tube |
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| CN104465297B true CN104465297B (en) | 2017-02-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108072694A (en) * | 2016-11-17 | 2018-05-25 | 中国科学院大连化学物理研究所 | A kind of blood concentration assay instrument detecting system |
| CN108088892A (en) * | 2016-11-21 | 2018-05-29 | 中国科学院大连化学物理研究所 | A kind of SF6On-line rapid measurement device and method |
| CN109781867A (en) * | 2017-11-10 | 2019-05-21 | 中国科学院大连化学物理研究所 | A kind of gas-chromatography-ion mobility spectrometry combination device for sulfur hexafluoride decomposer detection |
| CN107991379A (en) * | 2018-01-25 | 2018-05-04 | 清华大学 | The gas circuit flow-monitoring device and method of ionic migration spectrometer |
| CN111220682B (en) * | 2018-11-25 | 2022-06-24 | 中国科学院大连化学物理研究所 | Method for monitoring expired gas anesthetic on line by ion mobility spectrometry |
| CN112908827B (en) * | 2019-11-19 | 2021-11-09 | 中国科学院大连化学物理研究所 | Ion mobility spectrometry appearance control gas circuit |
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| JP2006222241A (en) * | 2005-02-10 | 2006-08-24 | Tokyo Electron Ltd | Equipment and method for removing organic substance |
| CN101339160B (en) * | 2008-08-15 | 2012-07-04 | 中国科学院安徽光学精密机械研究所 | Plasma source ion synergic checking ion transfer spectrometer |
| KR20080097365A (en) * | 2008-09-23 | 2008-11-05 | 순천대학교 산학협력단 | Apparatus for removal of nox, sox and dioxins by mediated electrochemical oxidation |
| CN101752176B (en) * | 2008-12-17 | 2012-02-08 | 中国科学院大连化学物理研究所 | Array ion migration tube |
| CN101710036B (en) * | 2009-12-15 | 2011-09-14 | 中国科学院广州地球化学研究所 | Puncture device of gold pipe and collection device of trace hydrogen sulfide generated by thermal simulation in gold pipe |
| CN102103973B (en) * | 2009-12-18 | 2012-11-07 | 中国科学院大连化学物理研究所 | Bipolar ion migration tube |
| CN102063132B (en) * | 2011-01-07 | 2012-08-08 | 水煤浆气化及煤化工国家工程研究中心 | Oxygen-coal ratio automatic control system of dust coal pressurization gasification device |
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