CN108169092A - Atmospheric particulates heavy metal and its isotope on-line water flushing devices and methods therefor - Google Patents
Atmospheric particulates heavy metal and its isotope on-line water flushing devices and methods therefor Download PDFInfo
- Publication number
- CN108169092A CN108169092A CN201810222856.1A CN201810222856A CN108169092A CN 108169092 A CN108169092 A CN 108169092A CN 201810222856 A CN201810222856 A CN 201810222856A CN 108169092 A CN108169092 A CN 108169092A
- Authority
- CN
- China
- Prior art keywords
- cavity
- laser beam
- heavy metal
- atmospheric particulates
- mass spectrograph
- 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.)
- Granted
Links
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 48
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001228 spectrum Methods 0.000 claims abstract description 31
- 239000000523 sample Substances 0.000 claims abstract description 27
- 239000013618 particulate matter Substances 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 23
- 239000000126 substance Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 7
- 238000000608 laser ablation Methods 0.000 claims description 7
- 238000002536 laser-induced breakdown spectroscopy Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000005427 atmospheric aerosol Substances 0.000 claims description 6
- 239000000975 dye Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000001561 resonance enhanced multiphoton ionisation spectroscopy Methods 0.000 claims description 6
- 238000001269 time-of-flight mass spectrometry Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 239000012159 carrier gas Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 238000004451 qualitative analysis Methods 0.000 claims description 4
- 238000004445 quantitative analysis Methods 0.000 claims description 4
- 239000013626 chemical specie Substances 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000010183 spectrum analysis Methods 0.000 claims description 3
- 238000001819 mass spectrum Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 description 13
- 230000000155 isotopic effect Effects 0.000 description 5
- 230000003595 spectral effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052924 anglesite Inorganic materials 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Electron Tubes For Measurement (AREA)
Abstract
The invention discloses a kind of Atmospheric particulates heavy metal and its isotope on-line water flushing devices and methods therefors,Include vacuum cavity,Vacuum cavity is divided into spectrum cavity and ionization cavity by partition board,Ionization cavity sample introduction aperture is provided among partition board,Sample channel passes through one end that vacuum cavity one end is set and sample channel is located in vacuum cavity to be provided with impulse valve,Laser beam 1 and 2 active region of laser beam are arranged in spectrum cavity and positioned at impulse valve side,Fiber spectrometer is collected probe and is arranged on the upside of laser beam 1 and 2 active region of laser beam,Mass spectrograph tof tube is horizontally set in ionization chamber body,Mass spectrograph ion lens group is arranged on mass spectrograph tof tube one end and mass spectrograph ion lens group position is corresponding with ionization cavity sample introduction aperture,3 active region of laser beam is located in mass spectrograph ion lens group,MCP detectors are arranged on the mass spectrograph tof tube other end.The present invention substantially increases the accuracy detected to particulate matter heavy metal element, sensitivity and comprehensive.
Description
Technical field
The present invention relates to a kind of on-line water flushing devices and methods therefor, particularly a kind of Atmospheric particulates heavy metal and its same position
Plain on-line water flushing devices and methods therefor.
Background technology
Atmospheric environment is related to the living or death of the mankind, it is enough research shows that, contain that there are many a toxic huge sum of moneys in Atmospheric particulates
Belong to element, such as lead, cadmium, mercury, copper, antimony, zinc.These heavy metal majorities are there are isotope, and isotopic abundance ratio is to study it
One of the important channel in north source.Here by taking lead as an example, lead is respectively there are four types of the isotope stablized in nature204Pb、206Pb
、207Pb and208Pb.Isotopic abundance ratio information does not change generally due to chemistry that it is undergone, physical change.This is possible to
Go to identify, distinguish the north sources of difference of lead using the isotopic abundance ratio of lead as one kind " fingerprint " of leaded substance.Different the first day of the lunar month sources
The isotopic abundance ratio of lead is different, and scientist can study according to lead isotopic ratio different in Atmospheric particulates
The source of Atmospheric particulates lead contamination and its contribution.Therefore high precisely on-line water flushing Atmospheric particulates heavy metal and its isotope are shown
It obtains extremely important.
The accuracy of current Atmospheric particulates on-line water flushing mass spectrograph detection at present is relatively low, is primarily due to the prior art
The mass number information of substance in Atmospheric particulates is only obtained, and does not obtain the atomic emission spectrum letter of Atmospheric particulates simultaneously
Breath, accuracy of analysis be not high, it is impossible to realize precisely detection.The prior art is detected, such as UV monochromatic lights simultaneously using multicomponent simultaneously
Sub-light ionization technique, cannot be to trace heavy metal member although can realize that contained multi-component material detects simultaneously in particulate matter
Element carries out high selectivity sensitive detection, and sensitivity is relatively low, and when particularly atmosphere particle concentration is relatively low, trace heavy metal can not be visited
It surveys.In addition using laser ablation, to substance, this body structure destroys serious, Jin Jintong to the prior art before using mass-spectrometric technique detection
The structure of matter of original heavy metal cannot be obtained by crossing mass spectrum（Such as PbO, PbNO3, PbSO4）Information.
Invention content
The technical problems to be solved by the invention are to provide a kind of Atmospheric particulates heavy metal and its isotope on-line water flushing
Devices and methods therefor improves the accuracy detected to particulate matter heavy metal element, sensitivity and comprehensive.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of Atmospheric particulates heavy metal and its isotope on-line water flushing device, it is characterised in that：Include vacuum cavity, vacuum chamber
Body is divided into spectrum cavity and ionization cavity by partition board, and ionization cavity sample introduction aperture is provided among partition board, and sample channel passes through true
One end that cavity body one end is set and sample channel is located in vacuum cavity is provided with impulse valve, laser beam 1 and laser beam 2
Active region is arranged in spectrum cavity and positioned at impulse valve side, and fiber spectrometer collects probe and is arranged on laser beam 1 and swashs
On the upside of 2 active region of light beam, mass spectrograph tof tube is horizontally set in ionization chamber body, and mass spectrograph ion lens group is arranged on mass spectrograph
Tof tube one end and mass spectrograph ion lens group position are corresponding with ionization cavity sample introduction aperture, and 3 active region of laser beam is located at matter
In spectrometer ion lens group, MCP detectors are arranged on the mass spectrograph tof tube other end.
Further, it is provided with the first molecular pump on the downside of the spectrum cavity.
Further, the second molecular pump and third molecular pump are provided on the downside of the ion cavity, the second molecular pump and the
Three molecular pumps are separately positioned on both ends on the downside of ion cavity.
Further, the mass spectrograph ion lens group includes telescopic system and a lens, and telescopic system is by coke
Two convex lenses away from respectively 9cm and 3cm are formed and two convex lens mirror spacing are 12cm, and a lens are arranged on telescope
On rear side of system, the focal length of lens is focused the light beam after telescopic system shrink beam for 3cm.
Further, the mass spectrograph tof tube uses aperture plate metal tube, and the mesh design of aperture plate is about 1mm.
A kind of method of Atmospheric particulates heavy metal and its isotope on-line water flushing device, it is characterised in that include following step
Suddenly：
Step 1：First by Atmospheric particulates on-line period system, Real-Time Atmospheric aerosol sample is obtained, then passes through particle
Diameter system is calibrated and selected to object, and the Atmospheric particulates for choosing different-grain diameter enter detection system；
Step 2：Into after detection system, near-infrared NIR on-line water flushing technologies are primarily based on, obtain the function of Atmospheric particulates
Group's information, main component information and the heavy metal chemical species that may be present of quick obtaining particulate matter complete preliminary composition
It measures and composition is predicted；
Step 3：By atmospheric aerosol samples carrier gas blow it is lower enter spectrum cavity, by impulse valve with impulse form into
Enter vacuum cavity, under 1 focussing force of 1064nm laser beams generated in pulsed YAG laser so that plasma is presented in particulate matter
Body state collects to obtain the LIBS spectrum of Atmospheric particulates using fiber spectrometer, and data incoming data processing system is quick to divide
Analysis obtains multicomponent heavy metal element in Atmospheric particulates and is distributed；
Step 4：The wherein interested heavy metal of locking, experiment generate tunable laser using YAG laser pump (ing)s dyestuff, obtain
Laser beam 2 focuses on the plasma that the effect of laser beam 1 generates, and generates LIF spectrum, by obtained LIF spectrum, realize to
Metallic element carries out accurate qualitative and quantitative analysis in grain object；
Step 5：After YAG laser ablations, Atmospheric particulates are destructurized, and contained substance majority exists in gaseous form, carrying
Gas effect is lower to enter ionisation chamber, at this moment carries out REMPI resonant check multi-photons to the gas for entering ionization cavity using laser beam 3
Ionization, realizes the high-quality resolution detection of the TOFMS of resonant excitation formula, and selectivity obtains Heavy Metals In Atmospheric Particles element
Isotope distribution and abundance messages.
Further, in the step 4, the output wavelength of laser beam 2 is the resonance wave of interested heavy metal element
Long, for the different heavy metals that the LIBS spectrum analysis that YAG laser actions generate obtains, dye laser will export different heavy metals
Corresponding resonant wavelength, and then accurate on-line analysis is carried out to different content of beary metal.
Further, in the step 5, laser beam 3 is identical with the laser beam 2 for generating LIF spectrum, is to pass through optical splitter
Light splitting obtains.
Compared with prior art, the present invention haing the following advantages and effect：
（1）, the atom spectrum that can be realized by the invention while obtain Heavy Metals In Atmospheric Particles element（LIBS spectrum and
LIF spectrum）And mass number（TOFMS）Two-dimentional finger print information obtains the height precisely detection of Atmospheric particulates heavy metal.Illustrate such as
Under：The optic spectrum line of many elements is very close, almost overlaps, such as in the spectral line of Fe and the very close situation of Pb spectral lines
Under, the spectrometer of low resolution is that can not to differentiate be Fe or Pb on earth, therefore be difficult to contained by it only by spectrographic detection
Element Accurate Calibration, spectral range researcher is it is known that many spectroscopic data calibration can provide two or more possible outcomes；
Judge that substance classes are also inaccurate only by mass number simultaneously, the substance some after laser ablation is deposited with molecular forms
, such as208The mass number of Pb elements is 208amu, and the molecule that mass number is all 208amu just has hundreds of, if only
It is criterion to detect element species be not accurate enough certainly only using mass number.The invention refers to atom spectrum and mass number two dimension
Line information is ingenious to be combined together, and can greatly improve the high accuracy of heavy metal on-line water flushing.
（2）, the heavy metal concentration of Atmospheric particulates it is natively very low, and jitter, on-line water flushing sample rate
In the case of not high, low-concentration detection is difficult to realize, laser tunable techniques are applied in detection by the present invention, combine two kinds altogether
It shakes Detection Techniques, one kind is LIF spectral techniques, and another kind is the TOFMS detections based on REMPI technologies.Such as particulate matter
In Pb elements, low concentration qualitative and quantitative analysis can be realized by LIF spectral techniques, while using based on REMPI technologies
TOFMS Detection Techniques, can realize the accurate analysis of low concentration isotope abundance.
（3）, proposed to destroying the structural information of original particulate matter, the present invention after sample laser ablation due to the prior art
After particulate collection, based on near-infrared (NIR) on-line water flushing technology, functional group's information of Atmospheric particulates is obtained first, is led to
These information are crossed to complete just with main component information and the heavy metal chemical species that may be present of quick obtaining particulate matter
Walk composition measurement and ingredient prediction.
（4）, cleverly light path design causes for the system that multidimensional detects it is only necessary to a pulsed YAG laser, survey
The three beams of laser that amount needs derives from identical laser, usefulness：The stability of whole system is high, laser wave itself
Dynamic that test result influence is consistent, three test process signal fluctuation amplitudes are consistent, are easy to calibrate；Laser beam 2 and laser
It is the identical resonant wavelength of certain Heavy Metallic Elements that beam 3 is required, achievable it is only necessary to once tune in the present invention
Two sets of resonance tests, greatly reduce the triviality used；Simultaneously as it is only necessary to a lasers can greatly reduce this
Invent the production cost of further industrialization；The integrated and portable degree of instrument is high.
Description of the drawings
Fig. 1 is the Atmospheric particulates heavy metal of the present invention and its schematic diagram of isotope on-line water flushing device.
Fig. 2 is the Atmospheric particulates heavy metal of the present invention and its flow chart of isotope on-line water flushing method.
Fig. 3 is the Atmospheric particulates heavy metal of the present invention and its light path system schematic diagram of isotope on-line water flushing method
Figure.
Specific embodiment
Below in conjunction with the accompanying drawings and pass through embodiment the present invention is described in further detail, following embodiment is to this hair
Bright explanation and the invention is not limited in following embodiments.
As shown in Figure 1, a kind of Atmospheric particulates heavy metal of the present invention and its isotope on-line water flushing device, include vacuum
Cavity, vacuum cavity are divided into spectrum cavity 10 and ionization cavity 11 by partition board, ionization cavity sample introduction aperture are provided among partition board
5, sample channel 1 passes through one end that vacuum cavity one end is set and sample channel 1 is located in vacuum cavity 10 to be provided with pulse
Valve 2, laser beam 1 and 2 active region 4 of laser beam are arranged in spectrum cavity 10 and positioned at 2 side of impulse valve, fiber spectrometer
It collects probe 3 and is arranged on 4 upside of laser beam 1 and 2 active region of laser beam, mass spectrograph tof tube 8 is horizontally set on ionization cavity 11
Interior, mass spectrograph ion lens group 7 is arranged on 8 one end of mass spectrograph tof tube and 7 position of mass spectrograph ion lens group and ionization chamber
Body sample introduction aperture 5 corresponds to, and 3 active region 6 of laser beam is located in mass spectrograph ion lens group 7, and MCP detectors 9 are arranged on mass spectrograph
8 other end of tof tube.
10 downside of spectrum cavity is provided with the first molecular pump 12.The downside of ion cavity 11 is provided with the second molecular pump 13 and the
Three molecular pumps 14, the second molecular pump 13 and third molecular pump 14 are separately positioned on 11 downside both ends of ion cavity.Due to the instrument
Ionization cavity is directly entered using pollutant during detection, the rate request that mass spectrometric ionization cavity vacuumizes is very high, is set at this
In meter, ionization cavity devises two high pumping rate molecular pumps, while following special setting is done on device：Mass spectrograph tof tube 8
Using aperture plate metal tube, the mesh design of aperture plate is about 1mm, tof tube working efficiency can be completely secured（It is grounded electric field）'s
It is also possible to which molecular pump is facilitated quickly to extract the sample introduction substance for ionizing cavity, the vacuum degree of ionization cavity, Jin Erzeng are improved
The mean free path of big detection ion, further improves mass spectrographic detection resolution capability.
In order to improve to gaseous sample detection efficient, improved using mass spectrograph ion lens group strong after laser beam focus
Degree, three laser beams have all carried out following manner focusing before effect：First pass through a telescopic system 1（Focal length is respectively 9cm
Unify with two convex lens groups of 3cm and spacing is 12cm）, laser beam compression is carried out to laser beam so that spot radius reduces
It is original 1/3rd；Then a focal length is used to be focused for the lens of 3cm to the light beam after shrink beam, acts on substance
On.
As shown in Figures 2 and 3, a kind of method of Atmospheric particulates heavy metal and its isotope on-line water flushing device, comprising with
Lower step：
Step 1：First by Atmospheric particulates on-line period system, Real-Time Atmospheric aerosol sample is obtained, then passes through particle
Diameter system is calibrated and selected to object, and the Atmospheric particulates for choosing different grain sizes enter detection system；
Step 2：Into after detection system, near-infrared NIR on-line water flushing technologies are primarily based on, obtain the function of Atmospheric particulates
Group's information, can be with the main component information and heavy metal of quick obtaining particulate matter chemical shape that may be present by these information
Formula is completed preliminary composition and is measured and composition prediction；
Step 3：By atmospheric aerosol samples carrier gas blow it is lower enter spectrum cavity, by impulse valve with impulse form into
Enter vacuum cavity, under 1 focussing force of 1064nm laser beams generated in pulsed YAG laser（Laser ablation）So that particulate matter
Plasmoid is presented, collects to obtain the LIBS spectrum of Atmospheric particulates, the processing of data incoming data using fiber spectrometer
System can quickly analyze to obtain multicomponent heavy metal element in Atmospheric particulates and be distributed.
Step 4：The wherein interested heavy metal of locking, such as Pb elements, experiment are generated using YAG laser pump (ing)s dyestuff
Tunable laser obtains output wavelength as 283.31nm（The resonant wavelength of Pb elements）Laser beam 2 focus on laser beam 1 and act on
The plasma of generation, generation wavelength are the LIF spectrum of 405.78nm, can be in contained Pb concentration by obtained LIF spectrum
It is realized in the case of extremely low and accurate qualitative and quantitative analysis is carried out to lead element in particulate matter.Above is only to be carried out by taking Pb as an example
Illustrate, for the different heavy metals that the LIBS spectrum analysis that YAG laser actions generate obtains, dye laser will export a different huge sum of moneys
Belong to corresponding resonant wavelength, and then accurate on-line analysis is carried out to different content of beary metal.
Step 5：After YAG laser ablations, Atmospheric particulates are destructurized, and contained substance majority is deposited in gaseous form
Entering ionisation chamber under carrier gas effect, at this moment carrying out REMPI resonance to the gas for entering ionization cavity using laser beam 3 increases
Strong multiphoton ionization, realizes the high-quality resolution detection of the TOFMS of resonant excitation formula, and selectivity obtains a huge sum of money in Atmospheric particulates
Belong to the isotope distribution and abundance messages of element.Such as herein in lead element, it is 283.31nm that selected wavelength, which exports, with
(1+1) REMPI is detected, and required laser beam 3 is identical with the laser beam 2 for generating LIF spectrum, is divided by optical splitter
It arrives.
Described in this specification above content is only illustrations made for the present invention.Technology belonging to the present invention
The technical staff in field can do various modifications or supplement to described specific embodiment or substitute in a similar way, only
Will without departing from description of the invention content or surmount range defined in the claims, should all belong to the present invention guarantor
Protect range.
Claims (8)
1. a kind of Atmospheric particulates heavy metal and its isotope on-line water flushing device, it is characterised in that：Include vacuum cavity, vacuum
Cavity is divided into spectrum cavity and ionization cavity by partition board, and ionization cavity sample introduction aperture is provided among partition board, and sample channel passes through
One end that vacuum cavity one end is set and sample channel is located in vacuum cavity is provided with impulse valve, laser beam 1 and laser
2 active region of beam is arranged in spectrum cavity and positioned at impulse valve side, and fiber spectrometer collects probe and is arranged on 1 He of laser beam
On the upside of 2 active region of laser beam, mass spectrograph tof tube is horizontally set in ionization chamber body, and mass spectrograph ion lens group is arranged on mass spectrum
Instrument tof tube one end and mass spectrograph ion lens group position are corresponding with ionization cavity sample introduction aperture, and 3 active region of laser beam is located at
In mass spectrograph ion lens group, MCP detectors are arranged on the mass spectrograph tof tube other end.
2. Atmospheric particulates heavy metal described in accordance with the claim 1 and its isotope on-line water flushing device, it is characterised in that：Institute
It states and is provided with the first molecular pump on the downside of spectrum cavity.
3. Atmospheric particulates heavy metal described in accordance with the claim 1 and its isotope on-line water flushing device, it is characterised in that：Institute
State and the second molecular pump and third molecular pump be provided on the downside of ion cavity, the second molecular pump and third molecular pump be separately positioned on from
Both ends on the downside of sub- cavity.
4. Atmospheric particulates heavy metal described in accordance with the claim 1 and its isotope on-line water flushing device, it is characterised in that：Institute
It states mass spectrograph ion lens group and includes telescopic system and a lens, telescopic system is respectively the two of 9cm and 3cm by focal length
A convex lens is formed and two convex lens mirror spacing are 12cm, and a lens are arranged on rear side of telescopic system, and the focal length of lens is
3cm is focused the light beam after telescopic system shrink beam.
5. Atmospheric particulates heavy metal described in accordance with the claim 1 and its isotope on-line water flushing device, it is characterised in that：Institute
Mass spectrograph tof tube is stated using aperture plate metal tube, the mesh design of aperture plate is about 1mm.
6. a kind of side of claim 1-3 any one of them Atmospheric particulates heavy metals and its isotope on-line water flushing device
Method, it is characterised in that comprise the steps of：
Step 1：First by Atmospheric particulates on-line period system, Real-Time Atmospheric aerosol sample is obtained, then passes through particle
Diameter system is calibrated and selected to object, and the Atmospheric particulates for choosing different-grain diameter enter detection system；
Step 2：Into after detection system, near-infrared NIR on-line water flushing technologies are primarily based on, obtain the function of Atmospheric particulates
Group's information, main component information and the heavy metal chemical species that may be present of quick obtaining particulate matter complete preliminary composition
It measures and composition is predicted；
Step 3：By atmospheric aerosol samples carrier gas blow it is lower enter spectrum cavity, by impulse valve with impulse form into
Enter vacuum cavity, under 1 focussing force of 1064nm laser beams generated in pulsed YAG laser so that plasma is presented in particulate matter
Body state collects to obtain the LIBS spectrum of Atmospheric particulates using fiber spectrometer, and data incoming data processing system is quick to divide
Analysis obtains multicomponent heavy metal element in Atmospheric particulates and is distributed；
Step 4：The wherein interested heavy metal of locking, experiment generate tunable laser using YAG laser pump (ing)s dyestuff, obtain
Laser beam 2 focuses on the plasma that the effect of laser beam 1 generates, and generates LIF spectrum, by obtained LIF spectrum, realize to
Metallic element carries out accurate qualitative and quantitative analysis in grain object；
Step 5：After YAG laser ablations, Atmospheric particulates are destructurized, and contained substance majority exists in gaseous form, carrying
Gas effect is lower to enter ionisation chamber, at this moment carries out REMPI resonant check multi-photons to the gas for entering ionization cavity using laser beam 3
Ionization, realizes the high-quality resolution detection of the TOFMS of resonant excitation formula, and selectivity obtains Heavy Metals In Atmospheric Particles element
Isotope distribution and abundance messages.
7. according to the method for claim 6, it is characterised in that：In the step 4, the output wavelength of laser beam 2 is feels emerging
The resonant wavelength of the heavy metal element of interest, for the different heavy metals that the LIBS spectrum analysis that YAG laser actions generate obtains, dye
Material laser will export the corresponding resonant wavelength of different heavy metals, and then carry out accurate on-line analysis to different content of beary metal.
8. according to the method for claim 7, it is characterised in that：In the step 5, laser beam 3 is with generating LIF spectrum
Laser beam 2 is identical, is to be divided to obtain by optical splitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810222856.1A CN108169092B (en) | 2018-03-19 | 2018-03-19 | Online detection device and method for heavy metals and isotopes of atmospheric particulates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810222856.1A CN108169092B (en) | 2018-03-19 | 2018-03-19 | Online detection device and method for heavy metals and isotopes of atmospheric particulates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108169092A true CN108169092A (en) | 2018-06-15 |
| CN108169092B CN108169092B (en) | 2023-10-27 |
Family
ID=62512142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810222856.1A Active CN108169092B (en) | 2018-03-19 | 2018-03-19 | Online detection device and method for heavy metals and isotopes of atmospheric particulates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108169092B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085151A (en) * | 2018-09-11 | 2018-12-25 | 南京信息工程大学 | The on-line measuring device and detection method of a kind of atmosphere pollution mercury and its isotope |
| CN109270004A (en) * | 2018-10-11 | 2019-01-25 | 南京信息工程大学 | Atmospheric analysis detection system and detection method based on DOAS and LIBS technology |
| CN109459396A (en) * | 2018-12-04 | 2019-03-12 | 南京信息工程大学 | The online laser acquisition analyzer of Atmospheric particulates carbon isotope and its application method |
| CN110068524A (en) * | 2019-06-03 | 2019-07-30 | 南京信息工程大学 | Atmospheric particulates are leaded and its isotope detection system |
| CN110487731A (en) * | 2019-10-08 | 2019-11-22 | 南京信息工程大学 | Helicobacter pylori detection device and method based on CN free radical isotope spectrum |
| CN111044420A (en) * | 2020-01-03 | 2020-04-21 | 南京信息工程大学 | LIBS and Raman spectrum aerosol on-line detection device based on single particle |
| CN111239104A (en) * | 2020-02-17 | 2020-06-05 | 吉林大学 | LIBS spectral signal enhancement method and system based on resonance excitation |
| CN112198096A (en) * | 2020-09-30 | 2021-01-08 | 中国工程物理研究院激光聚变研究中心 | Beryllium dust concentration online monitoring equipment and monitoring method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195807Y (en) * | 1994-06-01 | 1995-04-26 | 常州市红豆技术开发公司 | Dye laser for complex copper steam laser pump |
| DE19934349A1 (en) * | 1999-07-22 | 2001-01-25 | Ulrich Thiele | Analytical method and system for continuous monitoring of polymer melts involves sampling the main stream and measuring property values on the melt and extruded polymer by various instrumental methods |
| CN101750265A (en) * | 2008-12-17 | 2010-06-23 | 中国科学院大连化学物理研究所 | Time-of-flight mass spectrometer for measuring ratio of nano-particle component elements in real time |
| US20140354976A1 (en) * | 2011-09-20 | 2014-12-04 | Tsi, Incorporated | Apparatus and system for characterizing an aerosol particle flow |
| CN104237175A (en) * | 2014-08-28 | 2014-12-24 | 中国科学院近代物理研究所 | Analyzer for synchronously measuring in-situ laser mass spectrum and light spectrum |
| CN204330594U (en) * | 2014-12-17 | 2015-05-13 | 郭锐 | A kind of atmosphere heavy metal pollution thing collecting and detecting device based on LIBS |
| CN204989016U (en) * | 2015-06-26 | 2016-01-20 | 浙江师范大学 | Utilize separate unit pulse YAG laser instrument to realize induced spectral detection's of puncture of two pulsed laser of dual wavelength device |
| CN105572216A (en) * | 2015-12-30 | 2016-05-11 | 大连民族大学 | Novel flight time secondary ion mass spectrometer |
| CN107631999A (en) * | 2017-10-13 | 2018-01-26 | 中国科学院上海技术物理研究所 | LIBS and MS combination substance detection system under a kind of planet open environment |
| CN107764799A (en) * | 2017-11-21 | 2018-03-06 | 江西农业大学 | Device based on resonant excitation LIBS quick detection tealeaves heavy metal |
| CN208187913U (en) * | 2018-03-19 | 2018-12-04 | 南京信息工程大学 | Atmospheric particulates heavy metal and its isotope on-line water flushing device |
-
2018
- 2018-03-19 CN CN201810222856.1A patent/CN108169092B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195807Y (en) * | 1994-06-01 | 1995-04-26 | 常州市红豆技术开发公司 | Dye laser for complex copper steam laser pump |
| DE19934349A1 (en) * | 1999-07-22 | 2001-01-25 | Ulrich Thiele | Analytical method and system for continuous monitoring of polymer melts involves sampling the main stream and measuring property values on the melt and extruded polymer by various instrumental methods |
| CN101750265A (en) * | 2008-12-17 | 2010-06-23 | 中国科学院大连化学物理研究所 | Time-of-flight mass spectrometer for measuring ratio of nano-particle component elements in real time |
| US20140354976A1 (en) * | 2011-09-20 | 2014-12-04 | Tsi, Incorporated | Apparatus and system for characterizing an aerosol particle flow |
| CN104237175A (en) * | 2014-08-28 | 2014-12-24 | 中国科学院近代物理研究所 | Analyzer for synchronously measuring in-situ laser mass spectrum and light spectrum |
| CN204330594U (en) * | 2014-12-17 | 2015-05-13 | 郭锐 | A kind of atmosphere heavy metal pollution thing collecting and detecting device based on LIBS |
| CN204989016U (en) * | 2015-06-26 | 2016-01-20 | 浙江师范大学 | Utilize separate unit pulse YAG laser instrument to realize induced spectral detection's of puncture of two pulsed laser of dual wavelength device |
| CN105572216A (en) * | 2015-12-30 | 2016-05-11 | 大连民族大学 | Novel flight time secondary ion mass spectrometer |
| CN107631999A (en) * | 2017-10-13 | 2018-01-26 | 中国科学院上海技术物理研究所 | LIBS and MS combination substance detection system under a kind of planet open environment |
| CN107764799A (en) * | 2017-11-21 | 2018-03-06 | 江西农业大学 | Device based on resonant excitation LIBS quick detection tealeaves heavy metal |
| CN208187913U (en) * | 2018-03-19 | 2018-12-04 | 南京信息工程大学 | Atmospheric particulates heavy metal and its isotope on-line water flushing device |
Non-Patent Citations (7)
| Title |
|---|
| 刘林美;林兆祥;张文艳;张俊龙;曾伟丽;: "利用激光击穿光谱检测大气中的重金属成分", vol. 29, no. 04, pages 2 * |
| 刘林美;林兆祥;龚顺生;: "大气气溶胶有害成分的激光击穿光谱探测", 量子电子学报, no. 02 * |
| 周鸣飞等: "两步激光－飞行时间质谱法测定铁和镍同位素", vol. 18, no. 4 * |
| 杨宇翔等: "水中铅元素的激光诱导击穿光谱-激光诱导荧光超灵敏检测", vol. 37, no. 11 * |
| 汪玉洁;涂振权;周理;迟永杰;罗勤;: "大气颗粒物重金属元素分析技术研究进展", 光谱学与光谱分析, no. 04 * |
| 马万云,文克玲,陈瓞延: "用共振电离―TOF质谱法进行同位素比值的高精度快速测量", no. 1 * |
| 马靖等: "REMPI-TOFMS用于焚烧过程二恶英的连续监测", vol. 25, no. 1, pages 4 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085151A (en) * | 2018-09-11 | 2018-12-25 | 南京信息工程大学 | The on-line measuring device and detection method of a kind of atmosphere pollution mercury and its isotope |
| CN109270004A (en) * | 2018-10-11 | 2019-01-25 | 南京信息工程大学 | Atmospheric analysis detection system and detection method based on DOAS and LIBS technology |
| CN109270004B (en) * | 2018-10-11 | 2023-09-12 | 南京信息工程大学 | Atmospheric analysis detection system and detection method based on DOAS and LIBS technologies |
| CN109459396A (en) * | 2018-12-04 | 2019-03-12 | 南京信息工程大学 | The online laser acquisition analyzer of Atmospheric particulates carbon isotope and its application method |
| CN109459396B (en) * | 2018-12-04 | 2023-08-25 | 南京信息工程大学 | Online laser detection analyzer for carbon isotopes of atmospheric particulates and application method thereof |
| CN110068524A (en) * | 2019-06-03 | 2019-07-30 | 南京信息工程大学 | Atmospheric particulates are leaded and its isotope detection system |
| CN110487731A (en) * | 2019-10-08 | 2019-11-22 | 南京信息工程大学 | Helicobacter pylori detection device and method based on CN free radical isotope spectrum |
| CN110487731B (en) * | 2019-10-08 | 2024-04-19 | 南京信息工程大学 | Helicobacter pylori detection device and method based on CN free radical isotope spectrum |
| CN111044420A (en) * | 2020-01-03 | 2020-04-21 | 南京信息工程大学 | LIBS and Raman spectrum aerosol on-line detection device based on single particle |
| CN111044420B (en) * | 2020-01-03 | 2022-02-11 | 南京信息工程大学 | LIBS and Raman spectrum aerosol on-line detection device based on single particle |
| CN111239104A (en) * | 2020-02-17 | 2020-06-05 | 吉林大学 | LIBS spectral signal enhancement method and system based on resonance excitation |
| CN112198096A (en) * | 2020-09-30 | 2021-01-08 | 中国工程物理研究院激光聚变研究中心 | Beryllium dust concentration online monitoring equipment and monitoring method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108169092B (en) | 2023-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108169092A (en) | Atmospheric particulates heavy metal and its isotope on-line water flushing devices and methods therefor | |
| US7078679B2 (en) | Inductive detection for mass spectrometry | |
| CN107219214B (en) | Quantitative analysis device for elements in unknown sample by spectrum combination with mass spectrum | |
| Rusak et al. | Recent trends and the future of laser-induced plasma spectroscopy | |
| US4733073A (en) | Method and apparatus for surface diagnostics | |
| US7251022B2 (en) | Dual fiber microprobe for mapping elemental distributions in biological cells | |
| CN204086141U (en) | Local laser mass spectrum spectroscopic simultaneous analyzer | |
| CN109211847B (en) | Method for analyzing chemical components of single suspended particles by adopting analysis device | |
| CN104237175A (en) | Analyzer for synchronously measuring in-situ laser mass spectrum and light spectrum | |
| EP2665084A2 (en) | Improvements in and relating to the measurement of ions | |
| Frick et al. | Development of routines for simultaneous in situ chemical composition and stable Si isotope ratio analysis by femtosecond laser ablation inductively coupled plasma mass spectrometry | |
| Tanner et al. | Short transient signals, a challenge for inductively coupled plasma mass spectrometry, a review | |
| US20100181473A1 (en) | Method and apparatus for the analysis of samples | |
| CN108695135A (en) | Ion source and method for generating element ion from aerosol particle | |
| CN105718749A (en) | Coal quality characteristic analysis method based on large database identification | |
| CN208187913U (en) | Atmospheric particulates heavy metal and its isotope on-line water flushing device | |
| Noble et al. | Aerosol characterization using mass spectrometry | |
| US5763875A (en) | Method and apparatus for quantitative, non-resonant photoionization of neutral particles | |
| CA2706787C (en) | Laser multi-sensor system for the selective trace analysis of organic materials | |
| CN207964722U (en) | A kind of multiple beam normal pressure open type Portable laser mass spectrograph | |
| Hill et al. | Basic concepts and instrumentation for plasma spectrometry | |
| EP0167561B1 (en) | Method and apparatus for surface diagnostics | |
| Pérez-Arantegui et al. | Inorganic mass spectrometry | |
| US20230393065A1 (en) | Precision optical spectroscopy in a mass spectrometer | |
| CN107907586A (en) | A kind of portable laser mass spectrograph that can be worked under atmospheric environment |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 210044 No. 219 Ning six road, Jiangbei new district, Nanjing, Jiangsu Patentee after: Nanjing University of Information Science and Technology Address before: 210044 No. 219, Ning six road, Nanjing, Jiangsu Patentee before: Nanjing University of Information Science and Technology |