CN201247223Y - Ion transfer spectrometer - Google Patents
Ion transfer spectrometer Download PDFInfo
- Publication number
- CN201247223Y CN201247223Y CNU200820109259XU CN200820109259U CN201247223Y CN 201247223 Y CN201247223 Y CN 201247223Y CN U200820109259X U CNU200820109259X U CN U200820109259XU CN 200820109259 U CN200820109259 U CN 200820109259U CN 201247223 Y CN201247223 Y CN 201247223Y
- Authority
- CN
- China
- Prior art keywords
- semi
- hole
- migration
- permeable diaphragm
- termination electrode
- 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 - Lifetime
Links
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 238000013508 migration Methods 0.000 claims description 41
- 230000005012 migration Effects 0.000 claims description 41
- 238000009791 electrochemical migration reaction Methods 0.000 claims description 14
- 238000004070 electrodeposition Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 description 24
- 239000007789 gas Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The utility model discloses an ion transfer spectrometer, which comprises a sample injector, a semi-permeable diaphragm, an ionization space and an end electrode which are orderly arranged along a transferring tube, wherein one or a plurality of air intake holes are arranged on one side of the ionization space, to which the semi-permeable diaphragm is close, and the holes are connected with a needle valve and a first filtering device for leading air in, wherein at least one hole whose diameter is less than that of the air intake holes is arranged on the end electrode, a hole is arranged in the ionization space, to which the end electrode is close, and the hole is connected with an air extracting pump which is used for extracting air. Since the structure is adopted, the gas flow speed between the device and a connecting pump of the ionization space is controlled, since a micropore structure and the needle valve are used for forming a bigger air-resistance, lower air pressure is formed on the positions of the ionization space and the semi-permeable diaphragm, which greatly improves the permeating efficiency of the semi-permeable diaphragm, since a clamping structure with duplex-wire netting plate of the semi-permeable diaphragm, the semi-permeable diaphragm can not be convex due to the low air pressure.
Description
Technical field
The utility model relates to a kind of sniffer that uses the ion migrating technology to detect drugs and explosive, belongs to the safety detection technology field, is specifically related to a kind of ionic migration spectrometer, can improve sample introduction efficiency effectively.
Background technology
Ionic migration spectrometer is in the Weak Uniform Electromagnetic different resolutions that realize ion of drift velocity after the match according to different ions.Usually grade and constitute by sample introduction part, ionization part, ion gate, migration area, collecting region, sensing circuit, data acquisition and processing (DAP), control part.
Prior art has been used semi-permeable diaphragm, makes the require step-down of ionic migration spectrometer to environment cleanliness.Gas flow rate by appropriate design adjustment semi-permeable diaphragm both sides form negative pressure, but the negative pressure effect is subjected to certain limitation, and sample introduction efficiency is not high.
Patent documentation CN1916619A has disclosed a kind of ionic migration spectrometer based on the film sample introduction, and it is taked, and the serial connection micropump increases the transmitance of semi-permeable diaphragm to form negative pressure between semi-permeable diaphragm and ionization district.Yet, because series connection of pumps is in system, and most of drugs and explosive comprise that semi-permeable diaphragm itself all need be at 100 degree works under the situation such as above as 180 degree, owing to pump self can't make its application and life-span be subjected to certain limitation in long-term stable operation under the high-temperature condition.And pump housing inner structure is easily contaminated and easy cleaning not, causes equipment performance to descend.
Referring to Fig. 1, the structure that another prior art adopted comprises that the injector 1, semi-permeable diaphragm 2, ionization source 3, ion gate 4, ring electrode 5, the faraday that are arranged in order along migration tube coil 6 etc., comprise the aspiration pump 10 that links to each other with hole 9, the filtration unit 12 that links to each other with hole 11, the filtration unit 8 that links to each other with hole 7.Ambient atmos by entering the ionization district near near the aperture 13 the semi-permeable diaphragm 2, forms high velocity air again by filtration unit 12 near semi-permeable diaphragm, thereby forms draught head on the film both sides, and testing molecule is imported.Migration gas enters the migration area by filtration unit 8, and together extracts out outside the migration tube by pump 10 and reaction gas.Above-mentioned prior art problems is, forms controlled infrabar in a side of semi-permeable diaphragm, makes that the sample introduction efficiency of semi-permeable diaphragm is still lower.
The utility model content
In order to solve above-mentioned problems of the prior art, the purpose of this utility model provides a kind of method that strengthens the ionic migration spectrometer sample introduction efficiency, can improve sample introduction efficiency effectively.
Aspect one of the present utility model, a kind of ion migration ratio spectrometer has been proposed, comprise injector, semi-permeable diaphragm, ionization district and the termination electrode arranged successively along migration tube, wherein the side near semi-permeable diaphragm is provided with one or more air admission holes in the ionization district, be connected with first filtration unit with needle-valve, be used for air inlet, diameter at least one hole less than this air admission hole is arranged on this termination electrode, be provided with porosely in the ionization district near the position of termination electrode, be connected with the aspiration pump that is used to bleed.
Preferably, this ion migration ratio spectrometer also comprises the focusing electrode that is provided with near this ionization district one side, and the ion that this focusing electrode forms this ionization district focuses on so that by the hole on this termination electrode.
Preferably, the hole internal diameter of this focusing electrode is greater than the hole internal diameter of this termination electrode.
Preferably, this ion migration ratio spectrometer also comprises being arranged on this termination electrode away from the migration area of injector one side with as faraday's dish of the end of migration area, wherein opens a hole or porous is connected with second filtration unit at faraday Pan Chu.
Preferably, this ionic migration spectrometer comprises that also being arranged on this termination electrode coils another aspirating hole that side is provided with near faraday, is connected with another aspiration pump.Preferably, this semi-permeable diaphragm and this ionization district, focusing electrode migration area are accomplished airtight except that air hole.Preferably, the mobility spectrometer that is somebody's turn to do also comprises two vesicular sheet metals that this semi-permeable diaphragm is clipped in the middle
On the other hand of the present utility model, a kind of ionic migration spectrometer has been proposed, comprise injector, semi-permeable diaphragm, ionization district, termination electrode, ion storage district, migration area and the faraday's dish arranged along migration tube, its characteristics are that the migration area separates by the microcellular structure and the ionized region in ion storage district, be provided with the hole in the ionization district near the termination electrode position, be connected with the aspiration pump that is used to bleed, coil that side at described termination electrode near faraday another aspirating hole is set, be connected with another aspiration pump.
The utility model is owing to take above structure, can control the gas flow rate that is connected pump with ionized region, because microcellular structure and use needle-valve form bigger vapour lock, form lower air pressure at ionized region and semi-permeable diaphragm place, thereby improved the efficient that sees through of semi-permeable diaphragm greatly.
Because the migration area with a pump is connected separately, and separate by the microcellular structure and the ionized region in ion storage district, can form less negative pressure of relative external atmosphere pressure or malleation in the migration area, does not influence the migration of ion, and reduce requirement to the migration tube sealing.
Because the bimetallic mesh clamp structure of semi-permeable diaphragm, semi-permeable diaphragm can be not protruding owing to infrabar.
Because the use of focusing electrode makes ion enter the memory block by micropore, can not reduce the quantity of ion storage.
Description of drawings
From the detailed description below in conjunction with accompanying drawing, above-mentioned feature and advantage of the present utility model will be more obvious, wherein:
Fig. 1 is the structural representation according to the ion migration ratio spectrometer of prior art;
Fig. 2 is the structural representation according to the ion migration ratio spectrometer of the utility model embodiment;
Fig. 3 is the synoptic diagram according to the employed electrode structure of ion migration ratio spectrometer of the utility model embodiment.
Embodiment
Below, describe preferred implementation of the present utility model with reference to the accompanying drawings in detail.Though be shown in the different accompanying drawings, identical Reference numeral is used to represent identical or similar assembly.For clarity and conciseness, be included in here known function and the detailed description of structure will be omitted, otherwise they will make theme of the present utility model unclear.
Referring to Fig. 2 and Fig. 3, the structure that the utility model adopted comprises the injector 14 that is arranged in order along migration tube, the semi-permeable diaphragm 15 of the wire netting sheet clamping of shape such as Fig. 3 A is contained on both sides, the ionized region 16 that has micropore 29, focusing electrode 17 with center hole shape such as Fig. 3 B, the ion storage termination electrode 18 that has micropore with center hole shape such as Fig. 3 C, have the storage electrode 19 of center hole shape such as Fig. 3 B and shape that the center has net such as the other end electrode 20 of Fig. 3 A, have the shape of center pit such as the ring electrode 21 of Fig. 3 D, faraday coils 22 etc., termination electrode 18, have hole 25 between the storage electrode 19.
There is the aspiration pump 27 that links to each other with hole 28 at the two ends of ionized region, needle-valve 30 that links to each other with hole 29 and filtration unit 31.There is the filtration unit 24 that links to each other with hole 23 at the two ends of migration area, the aspiration pump 26 that links to each other with hole 25.The internal diameter of the micropore of the internal diameter of micropore 29 and termination electrode 18 should be less than 0.5 millimeter, and the internal diameter of the micropore of termination electrode 18 is slightly less than the internal diameter of micropore 29.Reacting gas enters ionized region by filtration unit 31, needle-valve 30 and micropore 29, by the hole 28 between focusing electrode 17, the ion storage termination electrode 18, is discharged outside the migration tube by pump 27.Migration gas enters the migration area by filtration unit 24 and hole 23, by the hole 25 of the migration area other end, is discharged outside the migration tube by pump 26.
Like this, because the use of the aspiration pump 27 of needle-valve 30, the special use of ionization district, and the cause of the micropore on the termination electrode 18, controlled depression formed in the ionization district.The user can form depression according to the needs of oneself.
In addition, because the migration area with a pump 26 is connected separately, and separate by microcellular structure on the termination electrode in ion storage district and ionized region, can form less negative pressure of relative external atmosphere pressure or malleation in the migration area, do not influence the migration of ion, and reduce requirement the migration tube sealing.
Moreover, because the bimetallic mesh clamp structure of semi-permeable diaphragm 2 makes that semi-permeable diaphragm 2 can be not protruding owing to infrabar.In addition, because the use of focusing electrode 17 makes ion enter the memory block by the center micropore on the termination electrode 18, can not reduce the quantity of ion storage.
Top description only is used to realize embodiment of the present utility model; it should be appreciated by those skilled in the art; in any modification or partial replacement that does not break away from scope of the present utility model; all should belong to claim of the present utility model and come restricted portion; therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (8)
1, a kind of ionic migration spectrometer, it is characterized in that comprising injector, semi-permeable diaphragm, ionization district and the termination electrode of arranging successively along migration tube, side in the ionization district near semi-permeable diaphragm is provided with one or more air admission holes, be connected with first filtration unit with needle-valve, diameter at least one hole less than described air admission hole is arranged on the described termination electrode, be provided with porosely in the ionization district near the position of termination electrode, be connected with aspiration pump.
2, ionic migration spectrometer as claimed in claim 1 is characterized in that also comprising the focusing electrode that is provided with near described ionization district one side, and the ion that described focusing electrode forms described ionization district focuses on so that by the hole on the described termination electrode.
3, ionic migration spectrometer as claimed in claim 2 is characterized in that the hole internal diameter of the hole internal diameter of described focusing electrode greater than described termination electrode.
4, ionic migration spectrometer as claimed in claim 3, it is characterized in that also comprising being arranged on described termination electrode, wherein open a hole or porous is connected with second filtration unit at faraday Pan Chu away from the migration area of injector one side with as faraday's dish of the end of migration area.
5, as claim 1 or 4 described ionic migration spectrometers, it is characterized in that also comprising that being arranged on described termination electrode coils another aspirating hole that side is provided with near faraday, be connected with another aspiration pump.
6, ion migration ratio spectrometer as claimed in claim 4 is characterized in that described semi-permeable diaphragm and described ionization district, focusing electrode migration area accomplish airtight except that air hole.
7, mobility spectrometer as claimed in claim 1 is characterized in that also comprising two vesicular sheet metals that described semi-permeable diaphragm is clipped in the middle.
8, a kind of ionic migration spectrometer, it is characterized in that comprising injector, semi-permeable diaphragm, ionization district, termination electrode, ion storage district, migration area and the faraday's dish of arranging along migration tube, the migration area separates by the microcellular structure and the ionized region in ion storage district, be provided with the hole in the ionization district near the termination electrode position, be connected with aspiration pump, coil that side at described termination electrode near faraday another aspirating hole is set, be connected with another aspiration pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109259XU CN201247223Y (en) | 2008-07-16 | 2008-07-16 | Ion transfer spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109259XU CN201247223Y (en) | 2008-07-16 | 2008-07-16 | Ion transfer spectrometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201247223Y true CN201247223Y (en) | 2009-05-27 |
Family
ID=40731042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820109259XU Expired - Lifetime CN201247223Y (en) | 2008-07-16 | 2008-07-16 | Ion transfer spectrometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201247223Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010006536A1 (en) * | 2008-07-16 | 2010-01-21 | 同方威视技术股份有限公司 | Ion mobility spectrometer |
| CN102592941A (en) * | 2009-06-30 | 2012-07-18 | 同方威视技术股份有限公司 | Ion mobility spectrometer and detection method adopting same |
| US8237110B2 (en) | 2009-09-25 | 2012-08-07 | Nuctech Company Limited | Ion mobility spectrometer detection method using dopants |
| CN102931046A (en) * | 2011-08-09 | 2013-02-13 | 中国科学院大连化学物理研究所 | Spatial focusing ion gate component and spatial focusing ion migration tube |
| CN102543649B (en) * | 2009-06-30 | 2014-08-13 | 同方威视技术股份有限公司 | Ion mobility spectrometer and detecting method using same |
| CN111220687A (en) * | 2018-11-26 | 2020-06-02 | 中国科学院大连化学物理研究所 | Ion mobility spectrometer with built-in sample introduction region |
| CN111220688A (en) * | 2018-11-26 | 2020-06-02 | 中国科学院大连化学物理研究所 | Ion mobility spectrometer with solid-liquid-gas sampling device |
-
2008
- 2008-07-16 CN CNU200820109259XU patent/CN201247223Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010006536A1 (en) * | 2008-07-16 | 2010-01-21 | 同方威视技术股份有限公司 | Ion mobility spectrometer |
| US8405024B2 (en) | 2008-07-16 | 2013-03-26 | Nuctech Company Limited | Ion mobility spectrometer |
| CN102592941A (en) * | 2009-06-30 | 2012-07-18 | 同方威视技术股份有限公司 | Ion mobility spectrometer and detection method adopting same |
| CN102543649B (en) * | 2009-06-30 | 2014-08-13 | 同方威视技术股份有限公司 | Ion mobility spectrometer and detecting method using same |
| CN102592941B (en) * | 2009-06-30 | 2015-04-08 | 同方威视技术股份有限公司 | Ion mobility spectrometer and detection method adopting same |
| US8237110B2 (en) | 2009-09-25 | 2012-08-07 | Nuctech Company Limited | Ion mobility spectrometer detection method using dopants |
| CN102033100B (en) * | 2009-09-25 | 2013-03-13 | 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 |
| CN102931046A (en) * | 2011-08-09 | 2013-02-13 | 中国科学院大连化学物理研究所 | Spatial focusing ion gate component and spatial focusing ion migration tube |
| CN111220687A (en) * | 2018-11-26 | 2020-06-02 | 中国科学院大连化学物理研究所 | Ion mobility spectrometer with built-in sample introduction region |
| CN111220688A (en) * | 2018-11-26 | 2020-06-02 | 中国科学院大连化学物理研究所 | Ion mobility spectrometer with solid-liquid-gas sampling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101629933B (en) | Ion mobility spectrometer | |
| CN201247223Y (en) | Ion transfer spectrometer | |
| CN102539514B (en) | Ion mobility spectrometer | |
| US9725751B2 (en) | Development of a detection microsystem | |
| CN100460685C (en) | Light gas vacuum pumping system | |
| CN202003947U (en) | Mass spectrum sample introduction device capable of switching between capillary sample introduction and membrane sample introduction | |
| WO2007140351A3 (en) | Flexible open tube sampling system for use with surface ionization technology | |
| EP1635375A3 (en) | Sampling device for mass spectrometer ion source with multiple inlets | |
| CN101881752B (en) | Micro two-dimensional ionic migration spectrometer | |
| CN104576287B (en) | Ion source system and mass spectrometer for atmospheric pressure interface | |
| RU2649426C2 (en) | Inlet closing mechanism | |
| EP1953799A3 (en) | High performance micro-fabricated electrostatic quadrupole lens | |
| EP1787703A3 (en) | Liquid trap device for gas | |
| CN104685336A (en) | Sample probe inlet flow system | |
| CN102646571A (en) | High-field asymmetric waveform ion mobility spectrometry (FAIMS) based on ion wind pumping systems | |
| CN103698387B (en) | For the sampling device of ionic migration spectrometer and using method thereof and ionic migration spectrometer | |
| CN214097353U (en) | Multi-channel gas detection mechanism capable of highly reducing field state | |
| CN207689208U (en) | A kind of universal gas collection device of diffusion type stationary gas detector | |
| CN103512947A (en) | Alternative gas switching method for ion mobility spectrometry in standby and analysis modes | |
| US10591390B1 (en) | Direct capture and analysis of aerosols and vapors by paper spray mass spectrometry | |
| CN206177656U (en) | Be rich in gaseous sampling device for analysis and detection of chemistry | |
| CN201438063U (en) | Capillary assembly and vacuum pumping device | |
| CN104181014A (en) | Atmospheric gaseous mercury sampling device | |
| CN109841486A (en) | A kind of ionic migration spectrometer | |
| CN208968765U (en) | A kind of test structure suitable for vent cabinet Leakage inspection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090527 Effective date of abandoning: 20080716 |