CN1225656C - Aerosol real-time measuring ion migration mass spectrograph - Google Patents
Aerosol real-time measuring ion migration mass spectrograph Download PDFInfo
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- CN1225656C CN1225656C CN 03131529 CN03131529A CN1225656C CN 1225656 C CN1225656 C CN 1225656C CN 03131529 CN03131529 CN 03131529 CN 03131529 A CN03131529 A CN 03131529A CN 1225656 C CN1225656 C CN 1225656C
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- mass spectrometer
- ion mobility
- mobility mass
- drift region
- gasoloid
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Abstract
The present invention relates to an aerosol ion migration mass spectrograph of real-time measurement, which comprises a sampler for aerosol particles, a vaporizing chamber and an ion migration mass spectrometer. The present invention is characterized in that the vaporizing chamber is arranged on the right side of the three-stage impact type sampler for aerosol particles; the vaporizing chamber is connected with the ion migration mass spectrometer through a spherical revolving joint. The present invention not only can rapidly and continuously monitor to aerosol, but also has the advantages of reasonable design, high sensitivity and convenient use.
Description
Technical field
The present invention relates to a kind of measurement ion mobility mass spectrometer, exactly is that a kind of gasoloid is measured ion mobility mass spectrometer constantly.
Background technology
Gasoloid is to be suspended in airborne particulate matter, can be solid-state, also can be liquid.Particle size range is 10
-3~ 10
2Um. the mankind have life and activity in production that gasoloid is just arranged, and also do not have volcanic explosion, the outer particle cloud of star and various biological spontaneous phenomenon generation " natural " gasoloid even there is activity in production.Aerocolloidal exist favourable harmful.Because the gasoloid that human immoderate activity in production produces has made human living space be subjected to severe contamination.According to the study, the human beings'health situation is directly related with gasoloid, and all kinds of respiratory diseases, angiocardiopathy and asthma, lung failure, lung cancer or the like have caused adult premature dead.Contaminated air is bigger to children's influence and harm.In various productions place, particularly be engaged in the workplace that various poisonous, objectionable impuritiess are produced, the generation of various occupational illness is directly related with aerocolloidal concentration of occupational and granularity.
Being used for detecting aerocolloidal way now is to adopt the place to carry out the sampling of particulate with the employing device earlier, then sampling filter paper is taken and is handled on the chromatograph and analyze.Also be not used for the instrument of in extremely rapid succession gasoloid being monitored.
Summary of the invention
The objective of the invention is provides a kind of gasoloid that can in extremely rapid succession monitor gasoloid to measure ion mass-spectrometer constantly to people.
The present invention includes aerosol particle subsampler, vaporizer and ion mobility mass spectrometer, it is characterized in that: three grades of impacting type aerosol particle subsampler the right are vaporizers, and vaporizer is linked to each other with ion mobility mass spectrometer by spherical adapter.
The air intake opening of three grades of impacting type aerosol particle subsampler upper end horizontal levels for communicating with atmosphere, the lower end bleeding point connects a miniature sampling pump, establish three grades of nozzles in the sampling thief, the sampling paper tape is loaded on the roll shaft, be fixed in below each grade nozzle by fixed support, be transferred to vaporizer by another roll shaft of step motor control.
Establish three vaporization chambers in the vaporizer, all be equipped with a well heater in it, three vaporization chambers select one spherical adapter to be connected with ion mobility mass spectrometer by one three.
There is an injection port in the ion mobility mass spectrometer left side, the left side is provided with the acceleration grid electrode in the cavity, ionization chamber, and the right is the drift region, the right, drift region is provided with a detector, one ion gate is arranged between ionization chamber and drift region, and there is an exhausr port on the ionization chamber right side, and micro-suction pump is housed on it, there is a drift region air intake opening on the right side, drift region, flow controller is housed on it, and aspiration pump is connected with flow controller by threeway, and the drift region is built-in with the ring electrode of stainless steel ring electrode and band aperture plate.
In addition, described miniature sampling pump employing pumping speed is 1-18L/ minute continuous adjustable miniature sampling pump.Described ionization chamber is for being wrapped in the radioactivity ring of Ni63 by ceramic ring.
During work, sampling thief is after the sampling time through setting, select in three passages of an adapter gating one by Single-chip Controlling three, the pairing stepper motor of Single-chip Controlling rotates simultaneously, the collection point of this paper tape is passed on the well heater of this passage and heated, close after opening tens microseconds of ion gate after postponing a period of time.Ion arrives the drift region by ion gate, in the drift region, produce uniform electric field E by the equal electric potential difference between several ring stainless steel sheets, and ion is drifted about with certain speed v by the effect meeting of electric field force in air, wherein v is: v=KE, E is an electric field intensity, and K is the transfer rate constant of reduction.Under low field intensity, the transfer rate constant K of ion is the constant of molecular structure character, and is irrelevant with electric field intensity.The speed difference that the ion of so different migration rates moves in the drift region, they arrive the asynchronism(-nization) of detector.Measure big its content of I quantitative measurment that the time of determining arrives the intensity of detector.Detector is a battery lead plate in this instrument, and ionic bombardment produces little electric current in the above, amplifies with micro current amplifier to obtain its mass spectrogram again.
Effect of the present invention:
The present invention not only can in extremely rapid succession monitor gasoloid, and reasonable in design, and is highly sensitive, easy to use.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Embodiment 1:
Referring to Fig. 1, the present invention includes aerosol particle subsampler 1, vaporizer 2 and 3, three grades of impacting type aerosol particles of ion mobility mass spectrometer subsampler, 1 the right is vaporizer 2, and vaporizer 2 is linked to each other with ion mobility mass spectrometer 3 by spherical adapter 4.The air intake opening 5 of sampling thief 3 upper end horizontal levels for communicating with atmosphere, it is 1-18L/ minute continuous adjustable miniature sampling pump that lower end bleeding point 6 connects a pumping speed, enter after the screen pack of bulky grain thing (as sandstone) in air intake opening 5 filters out in the air and establish three grades of nozzles 7 in the sampling thief, sampling paper tape 8 is loaded on the roll shaft 9, be fixed in below each grade nozzle by fixed support 10, another roll shaft 11 by step motor control is transferred to vaporizer again.Sampling paper tape 8 under three grades of nozzles gathers respectively that PM10 is above, the particulate of PM2.5～PM10 and PM1.0～PM2.5.Paper tape after the collection is the heating of well heater 12 places in three corresponding vaporization chambers vaporization respectively, and temperature is about 200 ℃.The air that vaporization back enters with the vaporizer carrier gas inlet selects one spherical adapter to flow to ion mobility mass spectrometer 3 through three, there is an injection port 13 in ion mobility mass spectrometer 3 left sides, the left side is provided with and quickens grid electrode 14, ionization chamber 15 in the cavity, the right is drift region 16, and the right, drift region is equipped with a detector 17.One ion gate 18 is arranged between ionization chamber and drift region.There is an exhausr port on the ionization chamber right side, and the micro-suction pump 19 of a 3.6L/min is housed on it, by this pump the gas molecule that the vaporization of the vaporization chamber of gating produces is pumped into ionization chamber.There is a drift region air intake opening 20 on the right side, drift region, and a flow controller 21 is housed on it, and the control flow velocity is 1.8L/min.Aspiration pump is connected with flow controller by threeway, and the gas part that ionization chamber is discharged turns back to the drift region by the drift region air intake opening.Ionization chamber is one to be wrapped in the radioactivity ring 23 of Ni63 by ceramic ring 22.High-speed ion ionization by Ni63 radiates produces a large amount of ions by the reaction of ion a part again.When ion gate was opened, ion arrived the drift region by ion gate, and the ring electrode 25 generation uniform electric fields by built-in one group of stainless steel ring electrode 24 in drift region and band aperture plate arrive detector 17 and are detected behind the drift region.When ion gate is closed, ion by behind the ion gate to all directions scattering, detect thereby ion can not be detected device.
Claims (6)
1, a kind of gasoloid is measured ion mobility mass spectrometer constantly, comprise aerosol particle subsampler, vaporizer and ion mobility mass spectrometer, it is characterized in that: three grades of impacting type aerosol particle subsampler the right are vaporizers, and vaporizer is linked to each other with ion mobility mass spectrometer by spherical adapter.
2, gasoloid according to claim 1 is measured ion mobility mass spectrometer constantly, it is characterized in that the air intake opening of three grades of impacting type aerosol particle subsampler upper end horizontal levels for communicating with atmosphere, the lower end bleeding point connects a miniature sampling pump, establish three grades of nozzles in the sampling thief, the sampling paper tape is loaded on the roll shaft, be fixed in below each grade nozzle by fixed support, be transferred to vaporizer by another roll shaft of step motor control.
3, gasoloid according to claim 1 is measured ion mobility mass spectrometer constantly, it is characterized in that establishing in the vaporizer three vaporization chambers, all is equipped with a well heater in it, and three vaporization chambers select one spherical adapter to be connected with ion mobility mass spectrometer by one three.
4, gasoloid according to claim 1 is measured ion mobility mass spectrometer constantly, it is characterized in that there is an injection port in the ion mobility mass spectrometer left side, the left side is provided with the acceleration grid electrode in the cavity, ionization chamber, the right is the drift region, the right, drift region is provided with a detector, one ion gate is arranged between ionization chamber and drift region, there is an exhausr port on the ionization chamber right side, micro-suction pump is housed on it, and there is a drift region air intake opening on the right side, drift region, and flow controller is housed on it, aspiration pump is connected with flow controller by threeway, and the drift region is built-in with the ring electrode of stainless steel ring electrode and band aperture plate.
5, gasoloid according to claim 2 is measured ion mobility mass spectrometer constantly, it is characterized in that it is 1-18L/ minute continuous adjustable miniature sampling pump that described miniature sampling pump adopts pumping speed.
6, gasoloid according to claim 4 is measured ion mobility mass spectrometer constantly, it is characterized in that described ionization chamber is for being wrapped in the radioactivity ring of Ni63 by ceramic ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03131529 CN1225656C (en) | 2003-05-20 | 2003-05-20 | Aerosol real-time measuring ion migration mass spectrograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03131529 CN1225656C (en) | 2003-05-20 | 2003-05-20 | Aerosol real-time measuring ion migration mass spectrograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1467498A CN1467498A (en) | 2004-01-14 |
| CN1225656C true CN1225656C (en) | 2005-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03131529 Expired - Fee Related CN1225656C (en) | 2003-05-20 | 2003-05-20 | Aerosol real-time measuring ion migration mass spectrograph |
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| CN (1) | CN1225656C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434899C (en) * | 2004-04-29 | 2008-11-19 | 中国科学院安徽光学精密机械研究所 | Flight time detection method and device for aerosol particle spectrum (mass spectrum) |
| CN100523779C (en) * | 2006-06-12 | 2009-08-05 | 中国科学院合肥物质科学研究院 | System for investigating harmful nano-particle in air |
| CN101587029B (en) * | 2008-05-21 | 2013-10-23 | 同方威视技术股份有限公司 | Sample processing system and method for trace quantity detector |
| CN102455318A (en) * | 2010-10-29 | 2012-05-16 | 中国科学院大连化学物理研究所 | Continuous monitor for detecting aerosol sample |
| CN102478491A (en) * | 2010-11-30 | 2012-05-30 | 中国科学院大连化学物理研究所 | Nanoscale aerosol particle spectrum detection analyzer |
| CN103779169B (en) * | 2012-10-17 | 2016-01-06 | 中国科学院大连化学物理研究所 | A kind of surface discharge ionization source-without ion gate transference tube |
| GB201314252D0 (en) * | 2013-08-08 | 2013-09-25 | Smiths Detection Watford Ltd | Apparatus and method |
| CN103487494B (en) * | 2013-09-11 | 2015-10-21 | 西北核技术研究所 | A kind of environmental aerosols direct sample enrichment sampling device and quantitative analysis method |
| CN104716001B (en) * | 2013-12-13 | 2017-03-08 | 中国科学院大连化学物理研究所 | A kind of liquid continuous sample introduction device of heating and gasifying |
| CN106449348B (en) * | 2016-10-27 | 2018-02-27 | 中国科学院合肥物质科学研究院 | A kind of capillary sample inlet interface arrangement for nanoparticles aerosol mass spectrometer |
| CN106525523B (en) * | 2017-01-03 | 2023-09-08 | 公安部第一研究所 | Thermal analysis sample injector for ion mobility spectrometer |
-
2003
- 2003-05-20 CN CN 03131529 patent/CN1225656C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1467498A (en) | 2004-01-14 |
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