CN103175887A - External connection gas source and ion mobility spectrometry combination system - Google Patents
External connection gas source and ion mobility spectrometry combination system Download PDFInfo
- Publication number
- CN103175887A CN103175887A CN2011104301555A CN201110430155A CN103175887A CN 103175887 A CN103175887 A CN 103175887A CN 2011104301555 A CN2011104301555 A CN 2011104301555A CN 201110430155 A CN201110430155 A CN 201110430155A CN 103175887 A CN103175887 A CN 103175887A
- Authority
- CN
- China
- Prior art keywords
- ion mobility
- mobility spectrometry
- gas
- air
- fast detector
- 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.)
- Pending
Links
Images
Abstract
The invention relates to an external connection gas source and ion mobility spectrometry combination system, which is composed of an air generator (automatic air source), a gas piping coupling component and an ion mobility spectrometry rapid detector, the air generator extracts air in a gas tank, the air in the gas tank is performed with processes of oil removal, water removal, dedusting and purifying, the air is conveyed to a suction pump inlet of the ion mobility spectrometry rapid detector through the gas piping coupling component, and is purified and flowed in the split mode to be taken as a drift gas and a carrying gas of the ion mobility spectrometry. The system can treat the air humidity as lowest relative humidity of 0%, and can make the ion mobility spectrometry to operate for 1-6 months under the condition that the relative humidity is less than 2%, the ion mobility spectrometry rapid detector can increase the sensitivity of the tested sample under the humidity condition, and the types of the detection sample is increased.
Description
Technical field
The present invention relates to the new system of a kind of external gas source and ion mobility spectrometry coupling, formed by air generator, gas piping coupling assembling, ion mobility spectrometry fast detector, the air generator extracting air and with its oil removing, dewater, udst separation processes, then by the pipeline connecting line, gas delivered into ion mobility spectrometry fast detector aspiration pump entrance.This system can be treated to relative humidity with air humidity and equal 0%, and low humidity experiment condition (relative humidity is less than 2%) has improved the detection sensitivity of ion mobility spectrometry fast detector, has increased the test sample kind.
Background technology
Air generator is to utilize a compressor to come pressurized air, adds that pressure controller makes the compressor can discontinuous operation, thereby extends the serviceable life of compressor, adds several purification pipes and removes oil, water and some airborne organism in compressor.Compressor is in starting～cut out the process of circulation, and the Shi Douhui that at every turn quits work discharges some moisture automatically.The output gas that the air generator device provides can keep relative humidity less than 2%, can continuous service 1～6 month, and longer time even.
A kind of separation detection technique that ion mobility spectrometry (Ion Mobility Spectrometry, IMS) technology 20 century 70s occur is compared with traditional mass spectrum, chromatographic apparatus, he has simple in structure, highly sensitive, analysis speed is fast, the characteristics of reliable results.Can detect micro substance in atmospheric environment, be suitable for on-the-spot the use.Therefore this technology can be applied to the online detection of precursor chemicals.The ionization source of ion mobility spectrometry is easy to make sample molecule, N
2, O
2With water vapor ionization, ion be easy to and molecule between ion, molecular reaction occur, obtain multi-products, thereby make the spectral line that records very complicated.Ion mobility spectrometry mainly is comprised of chamber, ion gate, drift region and detecting device.Sample gas produces molecule, ion in chamber ionization.Ion enters the drift region by the ion gate that periodicity is opened under the ordering about of electric field.In the process that the neutral drift gas molecule with adverse current constantly collides, migration rate is different separately in electric field due to these ions, makes different ions be separated, and successively arrives collector detected.Therefore just can determine the existence of evaluating objects material by transit time.But present ion mobility spectrometry fast detector sensitivity is undesirable, and perhaps some sample can not testedly detect, and assurance relative humidity can be improved this situation less than 2%.
Summary of the invention
The object of the present invention is to provide the new system of a kind of outer air supply source and ion mobility spectrometry coupling.The employing technical scheme is:
The new system of a kind of external gas source and ion mobility spectrometry coupling is comprised of air generator, gas piping coupling assembling, ion mobility spectrometry fast detector,
The gas vent of air generator is connected with the aspiration pump entrance of ion mobility spectrometry fast detector by pipeline; Air generator extracting gases and with its purified treatment, then by the pipeline connecting line, gas is delivered into ion mobility spectrometry fast detector aspiration pump entrance.
Connecting line between the aspiration pump entrance of described air generator and ion mobility spectrometry fast detector is provided with gas flow regulating and controlling valve.
Connecting line between the aspiration pump entrance of described air generator and ion mobility spectrometry fast detector is provided with two-port valve.
The source of the gas that air generator extracts is air, also can select purity oxygen, pure nitrogen gas or inert gas according to the needs of ion mobility spectrometry fast detector.
The air generator extracting air is in a gas-holder, in this gas-holder gas through oil removing, dewater, after udst separation processes, by the pipeline connecting line, gas is delivered into ion mobility spectrometry fast detector aspiration pump entrance, through shunting again after again purifying, respectively as floating gas (600mL/min) and carrier gas (400mL/min).
The air generator extracting gases, it to be carried out oil removing, dewater, udst separation processes, and reduces relative air humidity to 0-2%, move under less than 2% condition in relative humidity to guarantee the ion mobility spectrometry fast detector; This system can be treated to relative humidity less than 0% with air humidity, and the low humidity experiment condition has improved the detection sensitivity of ion mobility spectrometry fast detector, increases the test sample kind.
The pipeline connecting line of air generator and ion mobility spectrometry fast detector can be an ion mobility spectrometry fast detector air feed for the single channel airflow pipeline; Also can be split into the multichannel airflow pipeline, for many ion mobility spectrometry fast detectors provide source of the gas.
Advantage of the present invention is as follows:
This system's Air generator weight is got and has been replaced heavy steel cylinder air feed less than 20kg, satisfies the on-the-spot request for utilization of portable ionic migration spectrum fast detector; Easy to carry, whole system instrument independent operating, the instrument volume is small and exquisite portable.The external air generator device of ion mobility spectrometry fast detector is stable, for the ion mobility spectrometry fast detector provides accurately, the controlled experiments condition, makes measurement result reliable and stable.Air generator can be treated to relative humidity less than 2% with air humidity, thereby has improved the detection sensitivity of ion mobility spectrometry fast detector, has increased the test sample kind.The operating cost of whole system is lower, and the cost performance of instrument is higher.
The present invention is further detailed explanation below in conjunction with drawings and Examples:
Description of drawings
Fig. 1 is the structural representation of air generator and ion mobility spectrometry combined system gas piping coupling assembling, and the present invention is given and explanation;
1 leads to for gas piping connects two; 2 is gas flow regulating and controlling valve;
Fig. 2 (a) is that the ion mobility spectrometry fast detector is from background signal (RIP) the ion mobility spectrometry figure of air feed;
Fig. 2 (b) is background signal (RIP) the ion mobility spectrometry figure of air generator and ion mobility spectrometry combined system;
Fig. 3 is the structural representation that air generator and ion mobility spectrometry combined system detect black powder (sulphur);
Fig. 4 is the structural representation that air generator and ion mobility spectrometry combined system detect HMX (HMX).
Embodiment
Air generator (by the long-range Science and Technology Ltd. in Chinese and Western, Beijing produce, full-automatic air source BZ1BZ1SPB-3) output pressure controls 0.4Mpa, the output gas flow amount is adjusted to 2L/min; Ion mobility spectrometry fast detector carrier gas 400mL/min floats gas 600mL/min, 100 ℃ of migration tube temperature, 180 ℃ of injector temperature.Following embodiment operates under above-mentioned experiment condition.
Embodiment 1
As Fig. 1, air generator leads to for gas piping is connected two with ion mobility spectrometry combined system gas piping coupling assembling 1; 2 is gas flow regulating and controlling valve; The gas vent of air generator is connected with the aspiration pump entrance of ion mobility spectrometry fast detector by pipeline; Air generator output gas piping is generally the four fluorine tube that the aperture is ￠ 3 or ￠ 4, and ion mobility spectrometry fast detector gas access is the four fluorine tube of ￠ 4; This experiment air generator output gas piping is ￠ 3 four fluorine tubes, so connect by gas piping the four fluorine tube that two logical 1 conversions connect ￠ 4, then connect the aperture and be ￠ 4 gas flow regulating and controlling valves 2, total gas flow rate is reduced to 2L/min, to satisfy ion mobility spectrometry fast detector carrier gas 400mL/min, float the testing conditions of gas 600mL/min.
Embodiment 2
The ion mobility spectrometry fast detector is generally under 20～60% conditions in present laboratory relative humidity, generally can maintain operation work in 0～20% relative humidity by instrument self cleaning system.But it is very large that its relative humidity is affected by extraneous weather condition, and the relative humidity less than 2% can only be kept 2～5 days.The background signal (RIP) of ion mobility spectrometry fast detector is as shown in Fig. 2 (a), between signal intensity 300～400mv at this moment; And background signal (RIP) the ion mobility spectrometry figure of air generator and ion mobility spectrometry combined system is as shown in Fig. 2 (b).It is between 600～700mv that signal strengthens, and the peak type is optimized.Along with relative air humidity reduces, the signal of RIP moves to 6.08ms from 6.6ms.
Embodiment 3
When air humidity is higher (greater than 2%), the detection signal of black powder (mainly surveying sulphur) just overlaps with RIP or is very approaching.Cause distinguishing detecting signal, the identification of can not reporting to the police sees that just the RIP signal strengthens.But the source of the gas that air generator provides guarantees that relative air humidity less than 2%, separates detection signal and the RIP of black powder (sulphur), false alarm reduction.The detecting signal of 100ng sulphur as shown in Figure 3.6.12ms ion mobility spectrometry figure be the RIP background signal, the ion mobility spectrometry figure of 6.32ms is the detecting signal of black powder (sulphur).
Embodiment 4
When air humidity is higher (greater than 2%), HMX can not obtain detection signal under this experiment condition.But the source of the gas that air generator provides guarantees relative air humidity less than 2%, makes HMX obtain detection signal, as shown in Figure 4.The humidity that air generator has reduced the carrier gas of ion mobility spectrometry fast detector and floated gas increases the detection kind.
Claims (7)
1. the system of an external gas source and ion mobility spectrometry coupling, it is characterized in that: be comprised of air generator, gas piping coupling assembling, ion mobility spectrometry fast detector, the gas vent of air generator is connected with the aspiration pump entrance of ion mobility spectrometry fast detector by pipeline;
Air generator extracting gases and with its purified treatment, then by the pipeline connecting line, gas is delivered into ion mobility spectrometry fast detector aspiration pump entrance.
2. system according to claim 1 is characterized in that:
Connecting line between the aspiration pump entrance of described air generator and ion mobility spectrometry fast detector is provided with gas flow regulating and controlling valve.
3. system according to claim 1 and 2 is characterized in that:
Connecting line between the aspiration pump entrance of described air generator and ion mobility spectrometry fast detector is provided with two-way valve.
4. system according to claim 1 is characterized in that:
The source of the gas that air generator extracts is air, also can select purity oxygen, pure nitrogen gas or inert gas according to the needs of ion mobility spectrometry fast detector.
5. system according to claim 1 and 2, it is characterized in that: the air generator extracting gases, it to be carried out oil removing, dewater, udst separation processes, reduce relative air humidity to 0-2%, move under less than 2% condition in relative humidity to guarantee the ion mobility spectrometry fast detector; This system can be treated to relative humidity less than 0% with air humidity, and the low humidity experiment condition has improved the detection sensitivity of ion mobility spectrometry fast detector, increases the test sample kind.
6. system according to claim 1, it is characterized in that: the pipeline connecting line of air generator and ion mobility spectrometry fast detector can be an ion mobility spectrometry fast detector air feed for the single channel airflow pipeline; Also can split into the above multichannel airflow pipeline of Cheng Erlu, for many ion mobility spectrometry fast detectors more than two provide source of the gas.
7. system according to claim 1 is characterized in that:
Deliver into gas after ion mobility spectrometry fast detector aspiration pump entrance by the gas piping coupling assembling, through after again purifying, shunting respectively as floating gas and/or carrier gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104301555A CN103175887A (en) | 2011-12-20 | 2011-12-20 | External connection gas source and ion mobility spectrometry combination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104301555A CN103175887A (en) | 2011-12-20 | 2011-12-20 | External connection gas source and ion mobility spectrometry combination system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103175887A true CN103175887A (en) | 2013-06-26 |
Family
ID=48635887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104301555A Pending CN103175887A (en) | 2011-12-20 | 2011-12-20 | External connection gas source and ion mobility spectrometry combination system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103175887A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713997A (en) * | 2013-12-13 | 2015-06-17 | 中国科学院大连化学物理研究所 | Apparatus and method for rapidly detecting solid-state inorganic salts in soil |
| CN105204532A (en) * | 2014-06-18 | 2015-12-30 | 中国科学院大连化学物理研究所 | Gas flow control device for ion mobility spectrometry |
| CN109490402A (en) * | 2018-12-26 | 2019-03-19 | 福建万安华科电子科技有限公司 | A kind of ion mobility spectrometry alarm |
| CN110988208A (en) * | 2019-12-18 | 2020-04-10 | 中科新天地（合肥）环保科技有限公司 | VOCs check out test set based on ion mobility spectrometry |
| CN113777177A (en) * | 2020-06-09 | 2021-12-10 | 中国石油天然气股份有限公司 | Detection system and detection method for sulfur compounds in gas |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452600A (en) * | 1993-09-29 | 1995-09-26 | Lockheed Idaho Technologies Company | Calibrated vapor generator source |
| US5457316A (en) * | 1994-12-23 | 1995-10-10 | Pcp, Inc. | Method and apparatus for the detection and identification of trace gases |
| CN1390361A (en) * | 1999-11-12 | 2003-01-08 | 查尔斯斯塔克布料实验室公司 | Longitudinal field driven field asymmetric ion mobility filter and detection system |
| US6815669B1 (en) * | 1999-07-21 | 2004-11-09 | The Charles Stark Draper Laboratory, Inc. | Longitudinal field driven ion mobility filter and detection system |
| CN101113968A (en) * | 2006-07-27 | 2008-01-30 | 中国科学院大连化学物理研究所 | Method for on-line measuring drug-making chemicals with ion transfer spectrometer |
| CN102033100A (en) * | 2009-09-25 | 2011-04-27 | 同方威视技术股份有限公司 | Detecting system of ion migration spectrometer (IMS) using doping agent and detecting method thereof |
| CN202974871U (en) * | 2012-12-07 | 2013-06-05 | 北京瑞利分析仪器有限公司 | Argon-air dual-gas-source gas-path system for element analysis |
-
2011
- 2011-12-20 CN CN2011104301555A patent/CN103175887A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452600A (en) * | 1993-09-29 | 1995-09-26 | Lockheed Idaho Technologies Company | Calibrated vapor generator source |
| US5457316A (en) * | 1994-12-23 | 1995-10-10 | Pcp, Inc. | Method and apparatus for the detection and identification of trace gases |
| US6815669B1 (en) * | 1999-07-21 | 2004-11-09 | The Charles Stark Draper Laboratory, Inc. | Longitudinal field driven ion mobility filter and detection system |
| CN1390361A (en) * | 1999-11-12 | 2003-01-08 | 查尔斯斯塔克布料实验室公司 | Longitudinal field driven field asymmetric ion mobility filter and detection system |
| CN101113968A (en) * | 2006-07-27 | 2008-01-30 | 中国科学院大连化学物理研究所 | Method for on-line measuring drug-making chemicals with ion transfer spectrometer |
| CN102033100A (en) * | 2009-09-25 | 2011-04-27 | 同方威视技术股份有限公司 | Detecting system of ion migration spectrometer (IMS) using doping agent and detecting method thereof |
| CN202974871U (en) * | 2012-12-07 | 2013-06-05 | 北京瑞利分析仪器有限公司 | Argon-air dual-gas-source gas-path system for element analysis |
Non-Patent Citations (1)
| Title |
|---|
| 陶羽宇等: "用高场非对称波形离子迁移谱技术快速检测二乙醇胺", 《高等学校化学学报》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713997A (en) * | 2013-12-13 | 2015-06-17 | 中国科学院大连化学物理研究所 | Apparatus and method for rapidly detecting solid-state inorganic salts in soil |
| CN105204532A (en) * | 2014-06-18 | 2015-12-30 | 中国科学院大连化学物理研究所 | Gas flow control device for ion mobility spectrometry |
| CN109490402A (en) * | 2018-12-26 | 2019-03-19 | 福建万安华科电子科技有限公司 | A kind of ion mobility spectrometry alarm |
| CN110988208A (en) * | 2019-12-18 | 2020-04-10 | 中科新天地（合肥）环保科技有限公司 | VOCs check out test set based on ion mobility spectrometry |
| CN110988208B (en) * | 2019-12-18 | 2022-03-11 | 中科新天地（合肥）环保科技有限公司 | VOCs check out test set based on ion mobility spectrometry |
| CN113777177A (en) * | 2020-06-09 | 2021-12-10 | 中国石油天然气股份有限公司 | Detection system and detection method for sulfur compounds in gas |
| CN113777177B (en) * | 2020-06-09 | 2024-03-26 | 中国石油天然气股份有限公司 | System and method for detecting sulfur compounds in gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103175887A (en) | External connection gas source and ion mobility spectrometry combination system | |
| CN103364480B (en) | Detection system for IMS (Ion Mobility Spectrometry) explosives | |
| CN102183610B (en) | Method for analyzing 7N electronic grade ultrapure ammonia | |
| CN101113968A (en) | Method for on-line measuring drug-making chemicals with ion transfer spectrometer | |
| US20230236150A1 (en) | Trace detection device | |
| CN103854950A (en) | Membrane sample injection ionic migration spectrum gas path | |
| CN201903529U (en) | Continuous online ionic migration spectrum monitoring instrument for poisonous gases | |
| JP2002373615A (en) | Ion source and mass spectrometer using the same | |
| CN103698452A (en) | Portable gas chromatography-mass spectrometry combination instrument | |
| CN103871825A (en) | Heat parse sample injector ion mobility spectrometry gas passage | |
| CN109752344B (en) | Portable non-methane total hydrocarbon concentration detector and detection method | |
| CN105548327A (en) | Rapid detection for improving sensitivity of ion mobility spectrometry | |
| CN211122658U (en) | Organic and inorganic mixed gas fast quantitative analysis mass spectrometer | |
| CN207472839U (en) | A kind of Thermal desorption module of double cold-traps | |
| CN103854949A (en) | Thermal analysis sample injector ion mobility spectrometry air circuit | |
| CN213875525U (en) | Ion mobility spectrometry's pre-enrichment device | |
| CN104707448A (en) | Gas dewatering device and using method thereof | |
| US8309918B2 (en) | Trace detector and analytical method for trace detector | |
| CN112229893A (en) | Online monitoring system and method for high-resolution high-sensitivity rapid determination of volatile organic compounds | |
| CN218212249U (en) | A high humid gas sample pretreatment device for ion mobility spectrometry | |
| CN109841482B (en) | Enrichment sampling and ionization device for volatile organic compounds in liquid sample | |
| CN106257617A (en) | For the method and apparatus differentiating gas | |
| CN111220685B (en) | High-flux ion mobility spectrometer | |
| CN103071358A (en) | Hydrogen filter for detecting small leakage | |
| CN208688982U (en) | A kind of inductive coupling plasma emission spectrograph |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130626 |