CN113020140A - In-situ cleaning method for ion transfer tube - Google Patents
In-situ cleaning method for ion transfer tube Download PDFInfo
- Publication number
- CN113020140A CN113020140A CN201911250797.XA CN201911250797A CN113020140A CN 113020140 A CN113020140 A CN 113020140A CN 201911250797 A CN201911250797 A CN 201911250797A CN 113020140 A CN113020140 A CN 113020140A
- Authority
- CN
- China
- Prior art keywords
- ion migration
- close
- container
- outlet
- migration tube
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012546 transfer Methods 0.000 title claims abstract description 18
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 5
- 239000007789 gas Substances 0.000 claims abstract description 38
- 238000013508 migration Methods 0.000 claims description 67
- 230000005012 migration Effects 0.000 claims description 67
- 150000002500 ions Chemical class 0.000 claims description 66
- 239000007788 liquid Substances 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000002808 molecular sieve Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000012159 carrier gas Substances 0.000 abstract 1
- 238000011109 contamination Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000001871 ion mobility spectroscopy Methods 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229940035674 anesthetics Drugs 0.000 description 1
- 239000012472 biological sample Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003193 general anesthetic agent Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
本发明公开一种离子迁移管原位清洗方法。该方法在清洗离子迁移管时，不需要将离子迁移管拆开，通过迁移谱仪器自身所用的载气或者漂气，将清洗液从离子迁移管一端注入后由另一端排出，实现离子迁移管原位清洗。该方法简单方便，节省时间，可用于离子迁移管污染后的清洗或者日常维护。
The invention discloses an in-situ cleaning method for an ion transfer tube. The method does not need to disassemble the ion transfer tube when cleaning the ion transfer tube. The cleaning solution is injected from one end of the ion transfer tube and then discharged from the other end through the carrier gas or the drift gas used by the mobility spectrometer itself to realize the ion transfer tube. Clean in place. The method is simple and convenient, saves time, and can be used for cleaning or routine maintenance of the ion transfer tube after contamination.
Description
Technical Field
The invention relates to an in-situ cleaning method for an ion transfer tube.
Background
The ion mobility spectrometry is widely applied to detection of chemical toxicants, explosives, drugs and the like due to the advantages of high analysis speed, high sensitivity, small volume, simple operation and the like. In addition, ion mobility spectrometry can separate isomers, and is often used in combination with mass spectrometry to detect biological samples. In recent years, the application of ion mobility spectrometry has been advanced to the field of medical diagnosis, such as the detection of small molecule metabolites in exhaled breath, anesthetics in blood, and the like. However, when the ion mobility spectrometry is used for detecting complex samples or is used for field detection, a signal saturation memory effect is easily generated. When the migration tube is not used for a long time, the migration tube is easy to be polluted, and when the migration tube is used again, a plurality of unknown peaks generally exist in a spectrogram, so that qualitative and quantitative detection is influenced. Because the mobility spectrometry works under the atmospheric pressure, the residual ions and the neutralized ions of the sample are easily adsorbed on the inner wall of the migration tube, and are difficult to directly purge through drift gas. In addition, the migration tube has a complex structure, generally adopts a stacked structure, has multiple and fine parts, and is troublesome to directly unpick and wash. Particularly, the teflon insulator commonly used in the transfer pipe is expanded and deformed after the transfer pipe is heated and used, and is often difficult to reassemble after being disassembled and washed, or the sealability is deteriorated after the reassembly.
The patent of dense jade army applied for "an ion migration tube convenient to dismantle and wash" authorizes in 2019, 1 month and 4 days, and its technical characteristics are that the inner tube and the outer tube of the ion migration tube used for ion migration number experiment are connected through integrated into one piece's inner plug and outer canning, seal, and the dismantlement of the inner tube of being convenient for is washd, but this kind of mode still need be unpacked the washing apart from the ion migration tube, then at the equipment reduction, still is not convenient enough. The patent of the first research institute of the ministry of public security "-a purification treatment method for sample strips by ion mobility spectrometry", the sample strips after sampling detection are treated by a dissolving solvent, a cleaning solvent and pure water in sequence, and then dried to recover the performance, but the cleaning in a migration tube is not involved.
In addition, when the migration tube works, a uniform electric field needs to be formed in the migration tube and a pulse control ion gate needs to be applied, so that the connection of a conducting wire on the migration tube is complex, and the migration tube generally needs to be matched with a heating sheet and a heat-insulating material for use together, so that the detachment of the migration tube from the whole migration spectrum machine is troublesome.
If the transfer pipe can be directly cleaned under the condition of keeping the transfer pipe intact on the whole machine, a large amount of labor and time can be saved.
Disclosure of Invention
The invention aims to provide a time-saving and labor-saving method for cleaning an ion transfer tube, which can be used for directly cleaning the ion transfer tube under the condition of keeping the ion transfer tube intact on the whole machine.
In order to achieve the above purpose, the invention adopts the technical scheme that:
1) cutting off the power supply of the ion migration tube;
2) a container with an opening at the upper end and filled with cleaning fluid is adopted, a sealing cover is arranged at the upper opening end of the container, and the sealing cover is hermetically connected with the upper opening end of the container; one end of a cleaning liquid outflow pipe penetrates through the side wall surface of the sealing cover or the container and extends below the liquid level of the cleaning liquid, the other end of the cleaning liquid outflow pipe is connected with a gas inlet or outlet at one end (close to one side of the receiving electrode or close to the ionization source) of the ion migration pipe, and a gas inlet or outlet facing upwards at the other end (close to one side of the ionization source or close to one side of the receiving electrode) of the ion migration pipe is connected with a cleaning liquid recovery bottle through a pipeline; one end of a pressurized gas pipe penetrates through the sealing cover or the side wall surface of the container and extends into the container, and the other end of the pressurized gas pipe is connected with an outlet of an air compressor or an outlet of a high-pressure gas cylinder through a valve; opening an outlet valve of an air compressor or a high-pressure gas cylinder to continuously introduce the cleaning liquid in the container into the ion migration tube, and discharging the cleaning liquid from the ion migration tube after the whole ion migration tube is filled with the cleaning liquid, so that the online cleaning of the ion migration tube is realized; the outlet air of the air compressor is purified by a molecular sieve and activated carbon and then is introduced into the container, and the flow rate is controlled by the flow controller and is between 1 and 500 mL/min.
3) And introducing air or nitrogen into a gas inlet or outlet at one end (close to the side of the receiving electrode or close to the ionization source) of the ion migration tube, and emptying the gas inlet or outlet at the other end (close to the side of the ionization source or close to the side of the receiving electrode) of the ion migration tube to remove the cleaning liquid in the ion migration tube.
4) After cleaning, the container is removed, a gas inlet or an outlet at one end (close to one side of an ionization source or close to one side of a receiving electrode) of the ion migration tube faces downwards, purified air is introduced into the ion migration tube from the gas inlet or the outlet at the other end (close to one side of the receiving electrode or close to one side of the ionization source) of the ion migration tube, after all residual cleaning liquid is removed, the high-voltage power supply of the ion migration tube is opened after the ion migration tube is dried, the gas circuit is recovered to be normal, and the instrument is recovered to be used.
The invention has the advantages that:
the method is simple and rapid, and the ion migration tube can be cleaned on line.
The ion migration tube does not need to be disassembled and assembled in the cleaning process.
Drawings
FIG. 1 is a schematic view of a cleaning apparatus of the present invention. Wherein, (1) the container, (2) the gland bonnet, (3) the silicone tube of seal, (4) carry the gas pipeline, (5) the ion migration tube, (6) the cleaning fluid, (7) float the gas pipeline, (8) float the gas entry, (9) the tail gas outlet, (10) the pressurized gas tube
Fig. 2 is a background spectrum of an ion mobility tube after long-term use and a background spectrum of the ion mobility tube after being washed with purified water and methanol in sequence by adopting the washing mode of the invention.
Detailed Description
Please refer to fig. 1, which is a schematic diagram of the present invention.
And closing the main power supply of the ion migration tube, and blocking other air outlets on the ion migration tube except the floating air inlet on one side of the receiving electrode and the tail gas outlet on one side of the ionization source. A container (1) with an opening at the upper end and filled with pure water cleaning solution (6) is adopted, a sealing cover (2) is arranged at the upper opening end of the container, and the sealing cover is hermetically connected with the upper opening end of the container; two round holes are punched on the sealing cover, and two small sections of silicone tubes (3) are respectively inserted into the two round holes. One end of an outflow pipe (4) of the cleaning liquid penetrates through one section of the silicone tube and extends into the bottom of the container, the other end of the outflow pipe is connected with a floating gas inlet (8) of the ion migration pipe (5), and a tail gas outlet (9) positioned on one side of an ionization source of the ion migration pipe is connected with a cleaning liquid recovery bottle through a pipeline (7); one end of a pressurized gas pipe (10) penetrates through the other section of silicone tube and extends into the container, and the other end of the pressurized gas pipe is connected with an outlet of the air compressor; opening an outlet valve of an air compressor to continuously introduce pure water cleaning liquid in the container into the ion migration tube, and discharging the pure water cleaning liquid from the ion migration tube after the ion migration tube is filled with the pure water cleaning liquid, so that the ion migration tube is cleaned on line; the outlet air of the air compressor is purified by a molecular sieve and activated carbon and then is introduced into the container, and the flow rate is controlled to be 50mL/min by using a flow controller. After the pure water in the container is used up, ethanol is added as a cleaning solution, and the migration tube is further cleaned. After the cleaning is finished, the container is removed, the air floating inlet of the ion migration tube is downward, purified air is introduced into the ion migration tube from the air floating inlet of the ion migration tube, all residual cleaning liquid is removed, the cleaning liquid in the ion migration tube is purged completely, then the high-voltage power supply of the ion migration tube is opened, the gas circuit is recovered to be normal, and the instrument is recovered to be used.
Example 1: by using the cleaning method, the cleaning solution is selected to be water and ethanol to clean the ion transfer tube after long-term use. The background spectrogram of the migration tube before and after cleaning is shown in fig. 2, and it can be seen that after the ion migration tube is cleaned by using the rigid method, the impurity peak basically disappears completely, the intensity of the reagent ion peak is greatly enhanced, and the detection sensitivity is favorably improved.
Claims (7)
1. An in-situ cleaning method for an ion transfer tube is characterized by comprising the following steps:
1) cutting off the power supply of the ion migration tube;
2) a container with an opening at the upper end and filled with cleaning fluid is adopted, a sealing cover is arranged at the upper opening end of the container, and the sealing cover is hermetically connected with the upper opening end of the container; one end of a cleaning liquid outflow pipe penetrates through the side wall surface of the sealing cover or the container and extends below the liquid level of the cleaning liquid, the other end of the cleaning liquid outflow pipe is connected with a gas inlet or outlet at one end (close to one side of the receiving electrode or close to the ionization source) of the ion migration pipe, and a gas inlet or outlet facing upwards at the other end (close to one side of the ionization source or close to one side of the receiving electrode) of the ion migration pipe is connected with a cleaning liquid recovery bottle through a pipeline; one end of a pressurized gas pipe penetrates through the sealing cover or the side wall surface of the container and extends into the container, and the other end of the pressurized gas pipe is connected with an outlet of an air compressor or an outlet of a high-pressure gas cylinder through a valve;
opening an outlet valve of an air compressor or a high-pressure gas cylinder to continuously introduce the cleaning liquid in the container into the ion migration tube, and discharging the cleaning liquid from the ion migration tube after the whole ion migration tube is filled with the cleaning liquid, so that the online cleaning of the ion migration tube is realized;
3) and introducing air or nitrogen into a gas inlet or outlet at one end (close to the side of the receiving electrode or close to the ionization source) of the ion migration tube, and emptying the gas inlet or outlet at the other end (close to the side of the ionization source or close to the side of the receiving electrode) of the ion migration tube to remove the cleaning liquid in the ion migration tube.
2. The method of claim 1, wherein:
and a flow controller is arranged on the pressurized gas pipe outside the container and is used for adjusting the air inlet flow speed of the container.
3. The method of claim 1, wherein:
the cleaning solution is one or two of water and ethanol.
4. The method of claim 1, wherein:
the plane of the gas inlet or outlet at the other end (close to the ionization source side or close to the receiving electrode side) of the ion migration tube connected with the cleaning solution recovery bottle through the pipeline is positioned above the plane of the gas inlet or outlet at one end (close to the receiving electrode side or close to the ionization source side) of the ion migration tube connected with the cleaning solution outflow tube.
5. The method of claim 1, wherein:
and 2) purifying outlet air of the air compressor by using a molecular sieve and activated carbon, and then introducing the purified outlet air into a container, wherein the flow rate is controlled by a flow controller and is between 1 and 500 mL/min.
6. The method of claim 1, wherein:
after the cleaning liquid in the container is used up, the bottle cap can be opened to add the same cleaning liquid or replace another cleaning liquid for continuous cleaning.
7. The method of claim 1, wherein:
after cleaning, the container is removed, a gas inlet or an outlet at one end (close to one side of an ionization source or close to one side of a receiving electrode) of the ion migration tube faces downwards, purified air is introduced into the ion migration tube from the gas inlet or the outlet at the other end (close to one side of the receiving electrode or close to one side of the ionization source) of the ion migration tube, residual cleaning liquid is completely removed, the high-voltage power supply of the ion migration tube is opened after the ion migration tube is dried, the gas circuit is recovered to be normal, and the instrument is recovered to be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911250797.XA CN113020140A (en) | 2019-12-09 | 2019-12-09 | In-situ cleaning method for ion transfer tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911250797.XA CN113020140A (en) | 2019-12-09 | 2019-12-09 | In-situ cleaning method for ion transfer tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113020140A true CN113020140A (en) | 2021-06-25 |
Family
ID=76451095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911250797.XA Pending CN113020140A (en) | 2019-12-09 | 2019-12-09 | In-situ cleaning method for ion transfer tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113020140A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815234A (en) * | 2021-09-18 | 2023-03-21 | 广东联捷生物科技有限公司 | Needle washing device and needle washing method |
| CN116183708A (en) * | 2021-11-29 | 2023-05-30 | 中国科学院大连化学物理研究所 | Novel method for measuring trace chlorine by non-radioactive ionization source ion mobility spectrometry |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030155506A1 (en) * | 2002-02-15 | 2003-08-21 | Motchkine Viatcheslav S. | Cyclone sampling nozzle for an ion mobility spectrometer |
| WO2010123579A1 (en) * | 2009-04-24 | 2010-10-28 | Mks Instruments, Inc. | Clean corona gas ionization for static charge neutralization |
| CN105719935A (en) * | 2014-12-05 | 2016-06-29 | 中国科学院大连化学物理研究所 | Ion migration tube adopting electro-spray ion source and application |
| CN205518849U (en) * | 2016-01-29 | 2016-08-31 | 广东珠江燃气集团有限公司 | Shockproof type gas pipeline purging system |
| CN106345761A (en) * | 2016-09-12 | 2017-01-25 | 天津职业技术师范大学 | Automatic clearing apparatus for inner surface of tubule |
| CN109047255A (en) * | 2018-09-17 | 2018-12-21 | 南京苏格信息技术有限公司 | A kind of self-cleaning type experimental laboratory air exhausting device |
| CN208334125U (en) * | 2018-07-06 | 2019-01-04 | 密玉军 | A kind of transference tube of cleaning easy to disassemble |
| CN109550748A (en) * | 2017-09-25 | 2019-04-02 | 国家电投集团科学技术研究院有限公司 | Gas purging device |
| CN209237644U (en) * | 2018-11-16 | 2019-08-13 | 中国科学院大连化学物理研究所 | A gas purification tube and tail gas absorption treatment device for ion mobility spectrometry |
-
2019
- 2019-12-09 CN CN201911250797.XA patent/CN113020140A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030155506A1 (en) * | 2002-02-15 | 2003-08-21 | Motchkine Viatcheslav S. | Cyclone sampling nozzle for an ion mobility spectrometer |
| WO2010123579A1 (en) * | 2009-04-24 | 2010-10-28 | Mks Instruments, Inc. | Clean corona gas ionization for static charge neutralization |
| CN105719935A (en) * | 2014-12-05 | 2016-06-29 | 中国科学院大连化学物理研究所 | Ion migration tube adopting electro-spray ion source and application |
| CN205518849U (en) * | 2016-01-29 | 2016-08-31 | 广东珠江燃气集团有限公司 | Shockproof type gas pipeline purging system |
| CN106345761A (en) * | 2016-09-12 | 2017-01-25 | 天津职业技术师范大学 | Automatic clearing apparatus for inner surface of tubule |
| CN109550748A (en) * | 2017-09-25 | 2019-04-02 | 国家电投集团科学技术研究院有限公司 | Gas purging device |
| CN208334125U (en) * | 2018-07-06 | 2019-01-04 | 密玉军 | A kind of transference tube of cleaning easy to disassemble |
| CN109047255A (en) * | 2018-09-17 | 2018-12-21 | 南京苏格信息技术有限公司 | A kind of self-cleaning type experimental laboratory air exhausting device |
| CN209237644U (en) * | 2018-11-16 | 2019-08-13 | 中国科学院大连化学物理研究所 | A gas purification tube and tail gas absorption treatment device for ion mobility spectrometry |
Non-Patent Citations (1)
| Title |
|---|
| 汪涛等: "《长三角快速城镇化地区自然景观特色的观光休闲型美丽乡村建设技术及应用实践》", 30 June 2018, 东南大学出版社, pages: 135 - 136 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815234A (en) * | 2021-09-18 | 2023-03-21 | 广东联捷生物科技有限公司 | Needle washing device and needle washing method |
| CN116183708A (en) * | 2021-11-29 | 2023-05-30 | 中国科学院大连化学物理研究所 | Novel method for measuring trace chlorine by non-radioactive ionization source ion mobility spectrometry |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2544613B (en) | Darkroom type security inspection apparatus and method | |
| US10463275B2 (en) | Device for capturing and concentrating volatile organic compounds | |
| US10215666B2 (en) | Sample injection device and method for sample collection and sample thermal desorption, and trace detection apparatus | |
| CN105655225B (en) | A kind of film sampling device of mass spectrum fast enriching Thermal desorption and application | |
| CN104716003B (en) | One kind is used for mass spectrographic pulse nebulization technique formula film sampling device | |
| CN113020140A (en) | In-situ cleaning method for ion transfer tube | |
| CN103165388A (en) | Device for mass flow air enrichment analysis mass spectrum sampling in confined space | |
| JP2019120702A (en) | Sample collection absorber, heat desorption cavity device, sample collection device, and analyzer | |
| TWI685564B (en) | Nucleic acid extraction method and extraction card thereof | |
| CN101583867B (en) | Detection apparatus | |
| CN103529115A (en) | Directly-heated type tubular film enriching and sampling device used for online mass spectrum | |
| CN105203692A (en) | Security inspection equipment, sampling device of security inspection equipment, security inspection method and sampling method | |
| CN103995069B (en) | The microneedle capturing device of volatilization Semi-volatile organism emergency monitoring and using method | |
| CN103531431A (en) | Online mass spectrum sample introduction device with tubular film inside ionization source | |
| CN101583868A (en) | Detector apparatus and pre-concentrators | |
| CN113702481A (en) | System for purifying nitrogen and xenon in water and isotope static analysis method thereof | |
| CN202423215U (en) | Gas film sampling device of ion mobility spectrometry | |
| CN112908829B (en) | Source-inner membrane sample injection radio frequency enhanced chemical ionization source | |
| CN203929711U (en) | The ion mobility spectrometry apparatus in a kind of surface desorption atmospheric chemical ionization source | |
| JP2004226326A (en) | Soil gas collecting method and collecting equipment | |
| CN111220688A (en) | Ion mobility spectrometer with solid-liquid-gas sampling device | |
| CN110487884B (en) | Use method of ion migration tube for complex sample separation and analysis | |
| CN100526847C (en) | Method and apparatus for collecting and processing microgas in quartz tube | |
| CN112908830B (en) | An atmospheric pressure photoionization source device for the detection of volatile organic compounds in water | |
| CN117732808A (en) | Sample injection needle cleaning and drying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210625 |
|
| WD01 | Invention patent application deemed withdrawn after publication |