CN111220688A - Ion mobility spectrometer with solid-liquid-gas sampling device - Google Patents
Ion mobility spectrometer with solid-liquid-gas sampling device Download PDFInfo
- Publication number
- CN111220688A CN111220688A CN201811416974.2A CN201811416974A CN111220688A CN 111220688 A CN111220688 A CN 111220688A CN 201811416974 A CN201811416974 A CN 201811416974A CN 111220688 A CN111220688 A CN 111220688A
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- sample
- injection device
- lower cover
- sample injection
- gas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/622—Ion mobility spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
Abstract
The utility model provides an ion mobility spectrometer with solid-liquid gas sampling device, includes solid-liquid gas sampling device, filter equipment, ionization source, air pump, electrode, wherein sets up a sampling device at ionization district front end and is used for gathering the sample, because can gather solid, liquid, gaseous sample respectively, so the scope that can detect is wider, and is better to the adaptability of testing environment.
Description
Technical Field
Relates to an ion mobility spectrometry technology, belongs to the technical field of safety detection, and particularly relates to an ion mobility spectrometry capable of detecting various morphological substances.
Background
The ion mobility spectrometer consists of a sample introduction part, an ionization part, an ion gate, a migration region, a collection region, data acquisition and processing, control and other parts.
For the commonly used single-species sample introduction technology, the detection species form is less, the application environment limitation is large, and the detection of multiple species of polymorphic substances cannot be met at one time. The present invention is directed to solving the above-identified problems.
Disclosure of Invention
The present invention aims to provide a method capable of detecting various morphological substances. The ion migration spectrometer comprises an ion migration tube, an ionization region, a reaction region and a migration region are sequentially arranged from left to right, an ionization source is arranged at the upper end of the ionization region, and a sample injection device is arranged on the left side of the ionization region. The sample injection device comprises a sample injection device upper cover, a sample injection device lower cover, an electric heating element, sampling paper and a gas collection pipe. The sample feeding device lower cover left side end face is equipped with a groove, the bottom portion of the groove is equipped with a through hole communicated with ionization region, the electric heating element is placed in the groove, the sample feeding device upper cover is fastened on the left side end face of the sample feeding device lower cover, and the sampling paper is placed between the sample feeding device upper cover and the sample feeding device lower cover. A carrier gas inlet communicated with the inside of the groove is arranged below the lower cover of the sample injection device, and the other end of the carrier gas inlet is connected with a carrier gas source. A gas collecting tube communicated with the groove is arranged below the lower cover of the sample feeding device, and the other end of the gas collecting tube is connected with a carrier gas source.
The liquid or solid sample placing area on the sampling paper is arranged at the left opening end of the groove. The ionization region comprises a photoionization source, a smooth surface emitted by the photoionization source is vertical to the horizontal axis direction of the ionization region, a through hole is arranged on the left end face of the ion migration tube of the ionization region far away from the Faraday disc direction, and the through hole communicates the cavity of the sample feeding device with the ionization region; the right end face of the lower cover of the sample introduction device is hermetically connected with the left end face of the ion migration tube; the lower cover of the sample injection device is communicated with a through hole of the ionization region, wherein the aperture of the through hole is more than or equal to 1mm and less than or equal to 5 mm. The ion migration tube close to the Faraday disc is provided with a floating gas inlet, and the side wall of the ion migration tube in the reaction area is provided with a gas outlet which is connected with the atmosphere.
The other ends of the floating gas inlet, the carrier gas inlet and the gas collecting pipe are respectively communicated with the air through a filter pipe filled with purifying agents and an air pump.
When solid or liquid samples are fed, the upper cover and the lower cover of the sample feeding device are completely matched and sealed with the sampling paper, the electric heating element is electrified and heated, and the electric heating element is an electric heating wire, an electric heating rod, an electric heating belt, an electric heating block, a carbon fiber film or a ceramic heating sheet; the electric heating element is connected with a pulse direct current power supply; and a sample on the sampling paper carried by the carrier gas at the carrier gas inlet on the side wall of the lower cover of the sample injection device is introduced into the ionization region through the lower cover of the sample injection device and the through hole of the ionization region. The lower part of the gas collecting pipe is provided with a sample port gas inlet, the upper part of the gas collecting pipe is provided with an air pumping port, and the air pumping port is connected with a second air pump through a valve; the other end of the carrier gas inlet and the other end of the gas collecting pipe are respectively connected with a carrier gas source through electromagnetic valves.
When gas sampling is carried out, the upper cover of the sample feeding device and the lower cover of the sample feeding device are completely matched and sealed, the gas second pump is started, and collected atmosphere enters the gas collecting pipe; when gas is injected, the upper cover of the sample injection device and the lower cover of the sample injection device are completely matched and sealed, the second air pump is closed, the electromagnetic valve is opened, and a sample in the carrier gas carrier band gas collection pipe is introduced into the ionization region.
Drawings
FIG. 1 is a schematic view of the structure of ion mobility spectrometry
Detailed Description
In one aspect of the invention, an ion mobility spectrometer with a solid-liquid-gas sampling device is provided, which comprises an ion mobility tube and a sampling device. The ion migration tube comprises an ionization region 17, a reaction region 18 and a migration region 19 from left to right in sequence, and the sample injection device comprises a sample injection device upper cover 3, a sample injection device lower cover 2, a heater 24, sampling paper 10 and a gas collection tube 22. The ionization region comprises a photoionization source 1, a light surface emitted by the photoionization source 1 is vertical to the transverse axis direction of the ionization region 17, a through hole is arranged on the end surface of the ionization region 17 opposite to the direction of the Faraday disk 15, the cavity of the lower cover 2 of the sample feeding device is communicated with the ionization region 17 through the through hole, and the aperture of the through hole with the size of 1mm or more is less than or equal to 5 mm. Opposite gas outlets 4 are provided in the side wall of the reaction zone 18, the gas outlets 4 being connected to the atmosphere. The migration area 19 comprises an electrode ring 5, an insulating ring 6, a grid 7 and a Faraday disc 15. A floating gas inlet 14 is arranged on the ion migration tube close to the Faraday disc, a gas outlet is arranged on the side wall of the ion migration tube in the reaction area, and two carrier gas inlets 8 and 9 are arranged on the side wall of the lower cover of the sample injection device. The two carrier gas inlets 8,9 are communicated with the through holes of the lower part 2 and the ionization region 17 of the sample injection device. The float gas inlet 14 and the carrier gas inlets 8,9 are connected to the air through a filter tube filled with a molecular sieve purifying agent 12 and an air pump 13.
When solid liquid is injected, the upper cover 3 of the sample injection device, the lower cover 2 of the sample injection device and the sampling paper 10 are completely matched and sealed, the heater 24 is electrified for heating, and a sample on the sampling paper is carried by carrier gas of the carrier gas inlet 8 on the side wall of the lower cover 2 of the sample injection device and is led into the ionization region through the lower cover of the sample injection device and the through hole of the ionization region.
When gas sampling is carried out, the upper cover 3 and the lower cover 2 of the sample injection device are completely matched and sealed, the air pump 23 is started, and the atmosphere enters the gas collection pipe 22 through the one-way valve 11 and is continuously pumped out through the one-way valve 16 by the air pump 23.
When gas is injected, the upper cover 3 and the lower cover 2 of the sample injection device are completely matched and sealed, the air pump 23 is closed, the electromagnetic valve 21 is opened, carrier gas passing through a purifying agent flows into the gas collection tube through the one-way valve 20, and a carrier gas sample is guided into the ionization region through the through holes of the lower cover 3 and the ionization region 17 of the sample injection device due to the carrier gas inlet 9 on the side wall of the lower cover 2 of the sample injection device and enters the ion migration tube for analysis.
Claims (10)
1. An ion mobility spectrometer with a solid-liquid-gas sampling device comprises an ion mobility tube; the ion migration tube comprises an ionization region, a reaction region and a migration region from left to right in sequence, and an ionization source is arranged at the upper end of the ionization region, and is characterized in that:
a sample introduction device is arranged on the left side of the ionization region of the ion migration tube;
the sample introduction device comprises a sample introduction device upper cover, a sample introduction device lower cover, an electric heating element, sampling paper and a gas collection pipe; a groove is arranged on the left end face of the lower cover of the sample injection device, a through hole communicated with the ionization region is arranged at the bottom of the groove, the electric heating element is arranged in the groove, the upper cover of the sample injection device is buckled on the left end face of the lower cover of the sample injection device, and the sampling paper is arranged between the upper cover of the sample injection device and the lower cover of the sample injection device; a carrier gas inlet communicated with the inside of the groove is arranged below the lower cover of the sample injection device, and the other end of the carrier gas inlet is connected with a carrier gas source;
and a gas collecting tube communicated with the groove is arranged below the lower cover of the sample injection device, and the other end of the gas collecting tube is connected with a carrier gas source.
2. An ion mobility spectrometer according to claim 1, characterised in that: the liquid or solid sample placing area on the sampling paper is arranged at the left opening end of the groove.
3. An ion mobility spectrometer according to claim 1, characterised in that: the ionization region comprises a photoionization source, a smooth surface emitted by the photoionization source is vertical to the horizontal axis direction of the ionization region, a through hole is arranged on the left end face of the ion migration tube of the ionization region far away from the Faraday disc direction, and the through hole communicates the cavity of the sample feeding device with the ionization region; the right end face of the lower cover of the sample introduction device is hermetically connected with the left end face of the ion migration tube; the lower cover of the sample injection device is communicated with a through hole of the ionization region, wherein the aperture of the through hole is more than or equal to 1mm and less than or equal to 5 mm.
4. An ion mobility spectrometer according to claim 1, characterised in that:
a floating gas inlet is arranged on the ion migration tube close to the Faraday disc, and a gas outlet is arranged on the side wall of the ion migration tube in the reaction area and is connected with the atmosphere.
5. An ion mobility spectrometer according to claim 1, characterised in that: the other ends of the floating gas inlet, the carrier gas inlet and the gas collecting pipe are respectively communicated with the air through a filter pipe filled with purifying agents and an air pump.
6. An ion mobility spectrometer according to claim 5, characterised in that: the purifying agent is molecular sieve particles.
7. An ion mobility spectrometer according to claim 1, characterised in that: when solid or liquid sample is injected, the upper cover of the sample injection device, the lower cover of the sample injection device and the sampling paper are completely matched and sealed, the electric heating element is electrified for heating, and a sample on the sampling paper is carried by carrier gas at a carrier gas inlet on the side wall of the lower cover of the sample injection device and is led into the ionization region through the lower cover of the sample injection device and a through hole of the ionization region.
8. An ion mobility spectrometer according to claim 1, characterised in that: a sample port gas inlet is arranged at the lower part of the gas collecting pipe, an air pumping port is arranged at the upper part of the gas collecting pipe, and the air pumping port is connected with a second air pump through a valve;
the other end of the carrier gas inlet and the other end of the gas collecting pipe are respectively connected with a carrier gas source through electromagnetic valves.
9. An ion mobility spectrometer according to claim 1, 5 or 8 characterised in that: when gas sampling is carried out, the upper cover of the sample feeding device and the lower cover of the sample feeding device are completely matched and sealed, the gas second pump is started, and collected atmosphere enters the gas collecting pipe; when gas is injected, the upper cover of the sample injection device and the lower cover of the sample injection device are completely matched and sealed, the second air pump is closed, the electromagnetic valve is opened, and a sample in the carrier gas carrier band gas collection pipe is introduced into the ionization region.
10. An ion mobility spectrometer according to claim 1, characterised in that: the electric heating element is an electric heating wire, an electric heating rod, an electric heating belt, an electric heating block, a carbon fiber film or a ceramic heating sheet; the electric heating element is connected with a pulse direct current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811416974.2A CN111220688A (en) | 2018-11-26 | 2018-11-26 | Ion mobility spectrometer with solid-liquid-gas sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811416974.2A CN111220688A (en) | 2018-11-26 | 2018-11-26 | Ion mobility spectrometer with solid-liquid-gas sampling device |
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| Publication Number | Publication Date |
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| CN111220688A true CN111220688A (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811416974.2A Pending CN111220688A (en) | 2018-11-26 | 2018-11-26 | Ion mobility spectrometer with solid-liquid-gas sampling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683987A (en) * | 2020-12-30 | 2021-04-20 | 上海新漫传感科技有限公司 | Gas circuit working system of multifunctional ion mobility spectrometry |
| CN112768340A (en) * | 2020-12-30 | 2021-05-07 | 上海新漫传感科技有限公司 | Sampling device of multi-functional ion mobility spectrometry |
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| CN101339160A (en) * | 2008-08-15 | 2009-01-07 | 中国科学院安徽光学精密机械研究所 | Plasma source ion synergic checking ion transfer spectrometer |
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| CN108072690A (en) * | 2016-11-17 | 2018-05-25 | 中国科学院大连化学物理研究所 | A kind of ion mobility spectrometry and ion trap mass spectrometry combination device and analysis method |
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2018
- 2018-11-26 CN CN201811416974.2A patent/CN111220688A/en active Pending
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| CN201247223Y (en) * | 2008-07-16 | 2009-05-27 | 同方威视技术股份有限公司 | Ion transfer spectrometer |
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| CN101339160A (en) * | 2008-08-15 | 2009-01-07 | 中国科学院安徽光学精密机械研究所 | Plasma source ion synergic checking ion transfer spectrometer |
| US20120068063A1 (en) * | 2009-05-28 | 2012-03-22 | Georgia Tech Research Corporation | Direct Atmospheric Pressure Sample Analyzing System |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683987A (en) * | 2020-12-30 | 2021-04-20 | 上海新漫传感科技有限公司 | Gas circuit working system of multifunctional ion mobility spectrometry |
| CN112768340A (en) * | 2020-12-30 | 2021-05-07 | 上海新漫传感科技有限公司 | Sampling device of multi-functional ion mobility spectrometry |
| CN112768340B (en) * | 2020-12-30 | 2023-01-06 | 上海新漫传感科技有限公司 | Sampling device of multi-functional ion mobility spectrometry |
| CN112683987B (en) * | 2020-12-30 | 2023-01-06 | 上海新漫传感科技有限公司 | Gas circuit working system of multifunctional ion mobility spectrometry |
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Application publication date: 20200602 |
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