CN103871827A - Crossing type ion migration tube - Google Patents
Crossing type ion migration tube Download PDFInfo
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- CN103871827A CN103871827A CN201210536395.8A CN201210536395A CN103871827A CN 103871827 A CN103871827 A CN 103871827A CN 201210536395 A CN201210536395 A CN 201210536395A CN 103871827 A CN103871827 A CN 103871827A
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- inlet plenum
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Abstract
The invention provides a crossing type ion migration tube. Under the effect of an electric field, reactive ions generated by an ionization source directly bombard a sampling cloth, part sample molecules carried on the sampling cloth are directly ionized; and sample molecules which are not ionized further undergo molecular ion reaction in a reaction zone. Thus, the utilization rate and the ionization efficiency of samples are effectively improved.
Description
Technical field
The present invention has designed a kind of staggered form transference tube, and the reactive ion that ionization source produces directly bombards the sampling cloth of injection port, the sample segment molecule direct ionization of carrier band on sampling cloth; In reaction zone, further there is molecular ion reaction in the sample molecule not being ionized.Utilance and the ionizing efficiency of sample are effectively improved.
Background technology
Ion mobility spectrometry (Ion Mobility Spectrometry, IMS) technology is that the one that 20 century 70s occur separates detection technique, compared with the conventional art such as mass spectrum, chromatogram, it has the features such as simple in structure, highly sensitive, analysis speed is fast, is suitable for on-the-spot use.Ionic migration spectrometer is mainly made up of ionization source, ion gate, migration area and detector.Ion source makes sample molecule, N2, O2 and steam ionization, and the ion of generation is easy to and molecule generation ion molecule reaction, obtains multi-products ion.The ion gate that ion is opened by periodicity under the ordering about of electric field enters migration area, floating gas molecule with the neutrality of adverse current constantly collides, because these ions have different migration rates in electric field, different ions is separated, successively arrive detector.
Generally speaking, ion mobility spectrometry and sampling device are separate, and first sample changes into gaseous molecular by sampling device, are then carried and are entered ion mobility spectrometry and detect by carrier gas.Because transfer conduit has certain adsorption capacity to sample, therefore can reduce the utilance of sample, thus impact analysis sensitivity.
In order to improve utilance and the ionizing efficiency of sample, the present invention has designed a kind of staggered form transference tube, and under the effect of electric field, the reactive ion that ionization source produces directly bombards sampling cloth, the sample segment molecule direct ionization of carrier band on sampling cloth; In reaction zone, further there is molecular ion reaction in the sample molecule not being ionized.Utilance and the ionizing efficiency of sample are effectively improved.
Summary of the invention
The present invention has designed a kind of staggered form transference tube, be included in reaction zone, ion gate, migration area, aperture plate, ion receiving pole that in housing, order coaxially arranges successively, on the case side wall of reaction zone one side away from ion receiving pole one end, be provided with inlet plenum;
On inlet plenum, be provided with air inlet and gas outlet, the gas outlet of inlet plenum is connected with the reaction zone in housing;
Air inlet place in inlet plenum is provided with ionization source, between inlet plenum and reaction zone, is provided with sample stage, and the gas outlet of inlet plenum is towards sample lay down location on sample stage.
Close gas outlet place in inlet plenum is provided with plural electrode retaining collar, and electrode retaining collar is coaxial with gas outlet, and electrode retaining collar connects extraneous direct voltage by wire respectively, and the gas outlet place in inlet plenum forms an ion transfer district accelerating for ion.
When test sample, sampling placement is on sample stage, and the axis of inlet plenum gas outlet is through the part that is loaded with sample on sampling cloth, and reactive ion is by the sample on bombardment sampling cloth behind ion transfer district, and sample is brought reaction zone into by carrier gas air-flow.
On sampling cloth, a groove is set, for carrier band sample.
Be provided with heater in sample stage below, and/or be provided with heating lamp in sample stage top.
Heater is electrical bar, heating wire, electric heating block or ribbon heater.
Ionization source is radioactive ionization gauge source, light ionization source or discharge ionization source.
In the time that ionization source is light ionization source, in carrier gas, add dopant for generation of reactive ion.
Dopant is acetone, ethanol, benzene,toluene,xylene.
The gas outlet axis of inlet plenum and the axis of reaction zone are the angle of 30-150 degree; On sample stage, place the angle that the normal of plane at sample place and gas outlet axis are 0-75.
Advantage of the present invention:
Under the effect of electric field, the reactive ion that ionization source produces directly bombards sampling cloth, the sample segment molecule direct ionization of carrier band on sampling cloth; In reaction zone, further there is molecular ion reaction in the sample molecule not being ionized.Utilance and the ionizing efficiency of sample are effectively improved.
Accompanying drawing explanation
Fig. 1 is that the present invention utilizes the heating rod structural representation in when heating.
Fig. 2 is that the present invention utilizes the heating lamp structural representation in when heating.
Fig. 3 is the structural representation in radioactive ionization gauge source in the present invention.
Fig. 4 is the structural representation of light ionization source in the present invention.
Fig. 5 is the structural representation of discharge ionization source in the present invention.
Embodiment
The present invention has designed a kind of staggered form transference tube, be included in reaction zone, ion gate, migration area, aperture plate, ion receiving pole that in housing, order coaxially arranges successively, on the case side wall of reaction zone one side away from ion receiving pole one end, be provided with inlet plenum;
On inlet plenum, be provided with air inlet and gas outlet, the gas outlet of inlet plenum is connected with the reaction zone in housing;
Air inlet place in inlet plenum is provided with ionization source, between inlet plenum and reaction zone, is provided with sample stage, and the gas outlet of inlet plenum is towards sample lay down location on sample stage.
Close gas outlet place in inlet plenum is provided with plural electrode retaining collar, and electrode retaining collar is coaxial with gas outlet, and electrode retaining collar connects extraneous direct voltage by wire respectively, and the gas outlet place in inlet plenum forms an ion transfer district accelerating for ion.
When test sample, sampling placement is on sample stage, and the axis of inlet plenum gas outlet is through the part that is loaded with sample on sampling cloth, and reactive ion is by the sample on bombardment sampling cloth behind ion transfer district, and sample is brought reaction zone into by carrier gas air-flow.
On sampling cloth, a groove is set, for carrier band sample.
Be provided with heater in sample stage below, and/or be provided with heating lamp in sample stage top.
Heater is electrical bar, heating wire, electric heating block or ribbon heater.
Ionization source is radioactive ionization gauge source, light ionization source or discharge ionization source.
In the time that ionization source is light ionization source, in carrier gas, add dopant for generation of reactive ion.
Dopant is acetone, ethanol, benzene,toluene,xylene.
The gas outlet axis of inlet plenum and the axis of reaction zone are the angle of 30-150 degree; On sample stage, place the angle that the normal of plane at sample place and gas outlet axis are 0-75.
Structural representation when the present invention as shown in Figure 1 utilizes heating rod heating, 1 is carrier gas inlet, 2 is ionization source, 3 is ion transfer district, and 4 is sampling cloth, and 5 is groove, 6 is heating rod, and 7 is sample stage, and 8 is reaction zone, 9 is electrode retaining collar, and 10 is gas outlet, and 11 is ion gate, 12 is migration area, 13 is aperture plate, and 14 is ion receiving pole, and 15 for floating gas entrance.Structural representation when the present invention as shown in Figure 2 utilizes heating lamp heating, 6 is heating lamp, all the other are identical with Fig. 1.
When test sample, sample is placed in the groove of sampling cloth, and the cloth of then sampling inserts in injection port.The reactive ion that ionization source produces is by the sample that behind ion transfer district, directly bombardment is sampled in cloth groove, and sample segment is ionized.The sample not being ionized is under heating rod or the effect of heating lamp, and its gaseous molecular and reactive ion continue to occur molecular ion reaction in reaction zone.The ion gate that all ions were opened by the cycle enters the ion migration area being made up of uniform electric field, because different ions there are differences at aspects such as structure, quality, electric charges, therefore they have different mobilities, cause its speed difference mobile in migration area, successively reach detector, separate and detect thereby realize.
Claims (10)
1. a staggered form transference tube, is included in reaction zone, ion gate, migration area, aperture plate, ion receiving pole that in housing, order coaxially arranges successively, on the case side wall of reaction zone one side away from ion receiving pole one end, is provided with inlet plenum; It is characterized in that:
On inlet plenum, be provided with air inlet and gas outlet, the gas outlet of inlet plenum is connected with the reaction zone in housing;
Air inlet place in inlet plenum is provided with ionization source, between inlet plenum and reaction zone, is provided with sample stage, and the gas outlet of inlet plenum is towards sample lay down location on sample stage.
2. staggered form transference tube according to claim 1, is characterized in that:
Close gas outlet place in inlet plenum is provided with plural electrode retaining collar, and electrode retaining collar is coaxial with gas outlet, and electrode retaining collar connects extraneous direct voltage by wire respectively, and the gas outlet place in inlet plenum forms an ion transfer district accelerating for ion.
3. staggered form transference tube according to claim 1, is characterized in that:
When test sample, sampling placement is on sample stage, and the axis of inlet plenum gas outlet is through the part that is loaded with sample on sampling cloth, and reactive ion is by the sample on bombardment sampling cloth behind ion transfer district, and sample is brought reaction zone into by carrier gas air-flow.
4. staggered form transference tube according to claim 1, is characterized in that: on sampling cloth, a groove is set, for carrier band sample.
5. staggered form transference tube according to claim 1, is characterized in that:
Be provided with heater in sample stage below, and/or be provided with heating lamp in sample stage top.
6. staggered form transference tube according to claim 5, is characterized in that:
Heater is electrical bar, heating wire, electric heating block or ribbon heater.
7. staggered form transference tube according to claim 1, is characterized in that: ionization source is radioactive ionization gauge source, light ionization source or discharge ionization source.
8. staggered form transference tube according to claim 7, is characterized in that: in the time that ionization source is light ionization source, add dopant for generation of reactive ion in carrier gas.
9. staggered form transference tube according to claim 8, is characterized in that: dopant is acetone, ethanol, benzene,toluene,xylene.
10. staggered form transference tube according to claim 1, is characterized in that: the gas outlet axis of inlet plenum and the axis of reaction zone are the angle of 30-150 degree; On sample stage, place the angle that the normal of plane at sample place and gas outlet axis are 0-75 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536395.8A CN103871827A (en) | 2012-12-12 | 2012-12-12 | Crossing type ion migration tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536395.8A CN103871827A (en) | 2012-12-12 | 2012-12-12 | Crossing type ion migration tube |
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| Publication Number | Publication Date |
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| CN103871827A true CN103871827A (en) | 2014-06-18 |
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| CN201210536395.8A Pending CN103871827A (en) | 2012-12-12 | 2012-12-12 | Crossing type ion migration tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841367A (en) * | 2015-12-07 | 2017-06-13 | 中国科学院大连化学物理研究所 | A kind of Ion transfer spectrum detection method of time resolution Dynamic Thermal parsing |
| CN106872553A (en) * | 2015-12-14 | 2017-06-20 | 中国科学院大连化学物理研究所 | A kind of Propofol detection method for eliminating sevoflurane interference |
Citations (7)
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| US5071771A (en) * | 1989-12-04 | 1991-12-10 | Forintek Canada Corporation | Identification of wood species |
| CN2886569Y (en) * | 2005-05-30 | 2007-04-04 | 张秀庭 | Portable ion migration mass spectrograph for detecting explosive and drug |
| US20070084999A1 (en) * | 1999-07-21 | 2007-04-19 | The Charles Stark Draper Laboratory, Inc. | Method and apparatus for electrospray-augmented high field asymmetric ion mobility spectrometry |
| 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 |
| CN101452806A (en) * | 2007-12-05 | 2009-06-10 | 中国科学院大连化学物理研究所 | Ionization source and its application in mass spectra or ion transfer |
| 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 |
| CN102103039A (en) * | 2009-12-18 | 2011-06-22 | 中国科学院大连化学物理研究所 | Surface desorption sampling method and device |
-
2012
- 2012-12-12 CN CN201210536395.8A patent/CN103871827A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5071771A (en) * | 1989-12-04 | 1991-12-10 | Forintek Canada Corporation | Identification of wood species |
| US20070084999A1 (en) * | 1999-07-21 | 2007-04-19 | The Charles Stark Draper Laboratory, Inc. | Method and apparatus for electrospray-augmented high field asymmetric ion mobility spectrometry |
| CN2886569Y (en) * | 2005-05-30 | 2007-04-04 | 张秀庭 | Portable ion migration mass spectrograph for detecting explosive and drug |
| CN101452806A (en) * | 2007-12-05 | 2009-06-10 | 中国科学院大连化学物理研究所 | Ionization source and its application in mass spectra or ion transfer |
| 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 |
| 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 |
| CN102103039A (en) * | 2009-12-18 | 2011-06-22 | 中国科学院大连化学物理研究所 | Surface desorption sampling method and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841367A (en) * | 2015-12-07 | 2017-06-13 | 中国科学院大连化学物理研究所 | A kind of Ion transfer spectrum detection method of time resolution Dynamic Thermal parsing |
| CN106872553A (en) * | 2015-12-14 | 2017-06-20 | 中国科学院大连化学物理研究所 | A kind of Propofol detection method for eliminating sevoflurane interference |
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Application publication date: 20140618 |