CN105632865A - Non-radioactive ion migration tube - Google Patents
Non-radioactive ion migration tube Download PDFInfo
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- CN105632865A CN105632865A CN201410592968.8A CN201410592968A CN105632865A CN 105632865 A CN105632865 A CN 105632865A CN 201410592968 A CN201410592968 A CN 201410592968A CN 105632865 A CN105632865 A CN 105632865A
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Abstract
The invention is based on reagent module auxiliary photo ionization technology, and provides a non-radioactive ion migration tube. Reagent ions which are generated by the ion migration tube are mainly O<2-> and are same with the reagent ions that are generated by a radioactive ionization source. The non-radioactive ion migration tube well settles a radiation problem under a precondition that an ion migration tube measuring function is not affected.
Description
Technical field
The present invention, based on ion mobility spectrometry and reagent molecule fill-in light ionization technique, devises a kind of on-radiation transference tube.
Background technology
Ion mobility spectrometry (IonMobilitySpectrometry, IMS) a kind of separation detection technique that technology 20 century 70 occurs, compared with the conventional art such as mass spectrum, chromatograph, it has the features such as simple in construction, highly sensitive, analysis speed is fast, has been widely used in the on-line monitoring etc. of explosive examination, drugs inspection and VOCs. Ionic migration spectrometer is mainly made up of ion source, ion gate, migration area and detector. Ion source makes sample molecule, N2��O2Ionizing with steam, the ion of generation is easy to and molecule generation ion molecule reaction, obtains multi-products ion. Ion enters migration area by the ion gate periodically opened under the ordering about of electric field, float edema caused by disorder of QI with the neutrality of adverse current to be continually colliding, owing to these ions have different migration rates in the electric field so that different ions is separated, successively arrive detector.
Radioactive ionization gauge source due to its simple in construction, good stability, life-span length, without the advantage such as additionally powering and be easily maintained, become most widely used ionization source in commercialization ion mobility spectrometry instrument. But, its radiation problem all brings constant to operation, transport and process, and the application for ionic migration spectrometer brings serious impact. Up to now, existing photo-ionisation, the multiple Non-radioactivity ionization source such as ionization of discharging combine with ionic migration spectrometer, but often generate CO in the negative ion mode3 -��NOx -In reaction reagent ion, due to the restriction of reactivity and electron affinity, it is impossible to measure electron affinity or the more weak compound of reactivity.
The present invention, based on reagent molecule fill-in light ionization technique, devises a kind of on-radiation transference tube; The reagent ion that this transference tube generates is mainly O2 -, consistent with the reagent ion that radioactive ionization gauge source produces, do not affecting the radioactivity problem that solves well on the basis of transference tube measurement function.
Summary of the invention
The present invention devises a kind of on-radiation transference tube, and transference tube includes the ionized region, ion gate, migration area, aperture plate and the ion receiving pole that sequentially coaxially arrange in housing; Housing wall near ion receiving pole is provided with drift gas entrance, and drift gas entrance is connected with drift gas source of the gas; Housing wall between ion gate and ionized region is provided with carrier gas inlet, and carrier gas inlet is connected with carrier gas source of the gas; Housing wall near ionized region is provided with gas outlet, this gas outlet's emptying.
The gas passage that ionized region gas flows through is cuboid, and the length direction of cuboid is parallel with transference tube axis, width is less than or equal to the internal diameter of migration area, the cuboid central axis parallel with cuboid length direction and transference tube dead in line.
Being provided with vacuum UV lamp in ionized region, vacuum UV lamp is connected with the gas passage place of ionized region, and the window of vacuum UV lamp is in the long limit of cuboid and the plane place, broadside place of gas passage.
The height of gas passage is less than its length and width.
The height of gas passage is 1��5mm.
Transference tube runs under one-way gas flow pattern, and the airflow direction in ionized region is consistent with the airflow direction of drift gas.
In 10��90 degree between airflow direction in the beam direction of vacuum UV lamp and gas passage.
Reagent molecule it is added with in carrier gas or drift gas, or simultaneously added with reagent molecule in carrier gas and drift gas.
Reagent molecule includes one or two or more kinds in acetone, butanone, benzene,toluene,xylene and ethanol.
Vacuum UV lamp includes single flow and RF-type.
The present invention, based on reagent molecule fill-in light ionization technique, devises a kind of on-radiation transference tube; The reagent ion that this transference tube generates is mainly O2 -, consistent with the reagent ion that radioactive ionization gauge source produces, do not affecting the radioactivity problem that solves well on the basis of transference tube measurement function.
Accompanying drawing explanation
Fig. 1 is the structural representation of the on-radiation transference tube in the present invention, and now vacuum UV lamp beam direction is 90 degree with airflow direction in ionized region.
Wherein, 1 is gas outlet, and 2 is vacuum UV lamp, and 3 is ionized region, and 4 is carrier gas inlet, and 5 is ion gate, and 6 is migration area, and 7 is dead ring, and 8 is conducting ring, and 9 is aperture plate, and 10 is ion receiving pole, and 11 is drift gas entrance.
Fig. 2 is the structural representation of the on-radiation transference tube in the present invention, and now vacuum UV lamp beam direction is 60 degree with airflow direction in ionized region.
Fig. 3 is the reagent ion O adopting Fig. 1 constructional device to measure2 -Ion migration spectrogram.
Detailed description of the invention
The present invention devises a kind of on-radiation transference tube, and transference tube includes the ionized region, ion gate, migration area, aperture plate and the ion receiving pole that sequentially coaxially arrange in housing; Housing wall near ion receiving pole is provided with drift gas entrance, and drift gas entrance is connected with drift gas source of the gas; Housing wall between ion gate and ionized region is provided with carrier gas inlet, and carrier gas inlet is connected with carrier gas source of the gas; Housing wall near ionized region is provided with gas outlet, this gas outlet's emptying.
The gas passage that ionized region gas flows through is cuboid, and the length direction of cuboid is parallel with transference tube axis, width is less than or equal to the internal diameter of migration area, the cuboid central axis parallel with cuboid length direction and transference tube dead in line.
Being provided with vacuum UV lamp in ionized region, vacuum UV lamp is connected with the gas passage place of ionized region, and the window of vacuum UV lamp is in the long limit of cuboid and the plane place, broadside place of gas passage.
The height of gas passage is less than its length and width.
The height of gas passage is 1��5mm.
Transference tube runs under one-way gas flow pattern, and the airflow direction in ionized region is consistent with the airflow direction of drift gas.
In 10��90 degree between airflow direction in the beam direction of vacuum UV lamp and gas passage.
Reagent molecule it is added with in carrier gas or drift gas, or simultaneously added with reagent molecule in carrier gas and drift gas.
Reagent molecule includes one or two or more kinds in acetone, butanone, benzene,toluene,xylene and ethanol.
Vacuum UV lamp includes single flow and RF-type.
Embodiment 1
Adopt the on-radiation transference tube in the present invention, vacuum UV lamp beam direction is 90 degree with airflow direction in ionized region, flow rate of carrier gas is 300mL/min, drift gas velocity is 500mL/min, migration tube temperature is room temperature (25 DEG C), reagent molecule acetone makes an addition in carrier gas, the reagent ion O recorded2 -Ion migration spectrogram, as shown in Figure 3.
Claims (8)
1. an on-radiation transference tube, it is characterised in that:
Transference tube includes the ionized region (3), ion gate (5), migration area (6), aperture plate (9) and the ion receiving pole (10) that sequentially coaxially arrange in housing; Housing wall near ion receiving pole is provided with drift gas entrance (11), and drift gas entrance is connected with drift gas source of the gas; Housing wall between ion gate and ionized region is provided with carrier gas inlet (4), and carrier gas inlet is connected with carrier gas source of the gas; Housing wall near ionized region is provided with gas outlet (1), this gas outlet's emptying;
The gas passage that ionized region gas flows through is cuboid, and the length direction of cuboid is parallel with transference tube axis, width is less than or equal to the internal diameter of migration area, the cuboid central axis parallel with cuboid length direction and transference tube dead in line;
Being provided with vacuum UV lamp in ionized region, vacuum UV lamp is connected with the gas passage place of ionized region, and the window of vacuum UV lamp is in the long limit of cuboid and the plane place, broadside place of gas passage.
2. on-radiation transference tube according to claim 1, it is characterised in that:
The height of gas passage is less than its length and width.
3. on-radiation transference tube according to claim 1 and 2, it is characterised in that:
The height of gas passage is 1��5mm.
4. on-radiation transference tube according to claim 1, it is characterised in that:
Transference tube runs under one-way gas flow pattern, and the airflow direction in ionized region is consistent with the airflow direction of drift gas.
5. on-radiation transference tube according to claim 1, it is characterised in that:
In 10��90 degree between airflow direction in the beam direction of vacuum UV lamp and gas passage.
6. on-radiation transference tube according to claim 1, it is characterised in that:
Reagent molecule it is added with in carrier gas or drift gas, or simultaneously added with reagent molecule in carrier gas and drift gas.
7. on-radiation transference tube according to claim 6, it is characterised in that:
Reagent molecule includes one or two or more kinds in acetone, butanone, benzene,toluene,xylene and ethanol.
8. on-radiation transference tube according to claim 1, it is characterised in that:
Vacuum UV lamp includes single flow and RF-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410592968.8A CN105632865B (en) | 2014-10-28 | 2014-10-28 | A kind of on-radiation transference tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410592968.8A CN105632865B (en) | 2014-10-28 | 2014-10-28 | A kind of on-radiation transference tube |
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| CN105632865A true CN105632865A (en) | 2016-06-01 |
| CN105632865B CN105632865B (en) | 2017-09-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088887A (en) * | 2016-11-21 | 2018-05-29 | 中国科学院大连化学物理研究所 | A kind of detection method of front three amine gas |
| CN109781473A (en) * | 2017-11-13 | 2019-05-21 | 中国科学院大连化学物理研究所 | The anion of Propofol migrates spectrum detection method in a kind of expiratory air |
| CN109887823A (en) * | 2017-12-06 | 2019-06-14 | 中国科学院大连化学物理研究所 | A kind of transference tube and ionic migration spectrometer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1916619A (en) * | 2005-08-19 | 2007-02-21 | 上海新漫传感技术研究发展有限公司 | Ion migration spectrometer based on sample through membrane |
| CN102318035A (en) * | 2007-07-30 | 2012-01-11 | 粒子监测系统有限公司 | Detection of analytes using ion mobility spectrometry |
| CN102479663A (en) * | 2010-11-30 | 2012-05-30 | 中国科学院大连化学物理研究所 | Ion mobility tube and applications thereof |
| CN103165390A (en) * | 2011-12-19 | 2013-06-19 | 中国科学院大连化学物理研究所 | Ozone modified beta radioactive ion source and application thereof |
| CN103871828A (en) * | 2012-12-17 | 2014-06-18 | 中国科学院大连化学物理研究所 | Array type photoelectric transmission ionizing source and application thereof |
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2014
- 2014-10-28 CN CN201410592968.8A patent/CN105632865B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916619A (en) * | 2005-08-19 | 2007-02-21 | 上海新漫传感技术研究发展有限公司 | Ion migration spectrometer based on sample through membrane |
| CN102318035A (en) * | 2007-07-30 | 2012-01-11 | 粒子监测系统有限公司 | Detection of analytes using ion mobility spectrometry |
| CN102479663A (en) * | 2010-11-30 | 2012-05-30 | 中国科学院大连化学物理研究所 | Ion mobility tube and applications thereof |
| CN103165390A (en) * | 2011-12-19 | 2013-06-19 | 中国科学院大连化学物理研究所 | Ozone modified beta radioactive ion source and application thereof |
| CN103871828A (en) * | 2012-12-17 | 2014-06-18 | 中国科学院大连化学物理研究所 | Array type photoelectric transmission ionizing source and application thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088887A (en) * | 2016-11-21 | 2018-05-29 | 中国科学院大连化学物理研究所 | A kind of detection method of front three amine gas |
| CN109781473A (en) * | 2017-11-13 | 2019-05-21 | 中国科学院大连化学物理研究所 | The anion of Propofol migrates spectrum detection method in a kind of expiratory air |
| CN109887823A (en) * | 2017-12-06 | 2019-06-14 | 中国科学院大连化学物理研究所 | A kind of transference tube and ionic migration spectrometer |
| CN109887823B (en) * | 2017-12-06 | 2020-09-01 | 中国科学院大连化学物理研究所 | Ion migration tube and ion migration spectrometer |
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| Publication number | Publication date |
|---|---|
| CN105632865B (en) | 2017-09-15 |
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