CN208336147U - The plasma ionization device of Atmospheric particulates - Google Patents
The plasma ionization device of Atmospheric particulates Download PDFInfo
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- CN208336147U CN208336147U CN201820697034.4U CN201820697034U CN208336147U CN 208336147 U CN208336147 U CN 208336147U CN 201820697034 U CN201820697034 U CN 201820697034U CN 208336147 U CN208336147 U CN 208336147U
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Abstract
The utility model discloses a kind of plasma ionization devices of Atmospheric particulates, are related to analytical technique of mass spectrum field.Device includes aerodynamics lens and plasma ionization source, in use, air sample containing particulate matter such as aerosol is inhaled into aerodynamics lens under vacuum first, particle enters interior electrode after becoming a branch of, gas molecules are taken away by vacuum pump, the interference for avoiding gas improves the collecting efficiency and Ionization Efficiency of particulate matter；Meanwhile using sample inlet end as the interior electrode of plasma producing apparatus, the time of contact of sample and plasma is increased, Ionization Efficiency is improved；In addition, improving the Ionization Efficiency of particulate matter by increasing by one layer of filter membrane in insulation pipe end, reducing fragment ion, obtained ion can be directly entered mass spectrometric injection port and be detected.So device provided by the utility model can carry out the qualitative and quantitative analysis of substance in the samples such as aerosol in conjunction with mass spectrum.
Description
Technical field
The utility model relates to a kind of ionization of the plasma of analytical technique of mass spectrum field more particularly to Atmospheric particulates to fill
It sets.
Background technique
The process of spectrometer analysis sample is broadly divided into three steps: first being turned charge on sample molecule band by mass ion source
Become ion, then by the karyoplasmic ratio of mass analyzer measurement ion, the strength signal of each ion is finally obtained by detector.Cause
This, type ion source provisioned in mass spectrograph determines the sample type that the mass spectrograph can be analyzed.Some ion sources can only be from
Sonization fluid sample, the sample of other forms, which needs first to be dissolved in solvent, to be analyzed, such as electric spray ion source；Some are only
Suitable for gaseous sample, such as film sample introduction ion source.
Aerosol particle diameter between tens nanometers to several microns, to will wherein substance within a very short time all from
Sonization requires the ionizing efficiency of ion source very high.Currently, the ion of energy this kind of solid sample of direct ion aerosol particle
Source is fewer.Aerosol mass spectrometer generally uses one of following two ionization source: laser ionization method and Thermal desorption auxiliary electron bang
Striking.Both methods there is a problem of one it is common be exactly that a large amount of fragment ions can be generated when by molecular ionization, make to compose
The information of molecular ion is even lost while figure complicates, and the fragment ion of different molecular may be overlapped, and influence to detect.
Utility model content
The purpose of this utility model is to provide a kind of plasma ionization devices of Atmospheric particulates, to solve existing
Foregoing problems present in technology.
To achieve the goals above, the technical solution adopted in the utility model is as follows:
A kind of plasma ionization device of Atmospheric particulates, including aerodynamics lens and plasma ionization source,
The plasma ionization source includes interior electrode, insulation tube, external electrode, discharge gas pipeline and AC power source, and the air is dynamic
The outlet of mechanics lens is connected to the arrival end of the interior electrode, and the connection of the aerodynamics lens and the interior electrode
Place is provided with vacuum pump, and the interior electrode is set in the insulation tube, the insulation tube at the interior electrode outlet
The external electrode is enclosed on outer wall, the AC power source is connected between the interior electrode and the external electrode, the electric discharge
The inlet vertical connection of gas piping and the insulation tube, the discharge gas passed through in the discharge gas pipeline is described interior
It is flowed in gap between electrode and the insulation tube, the exit of the insulation tube is provided with filter membrane, the insulation tube outlet
Air pressure of the air pressure at place lower than the inlet of the interior electrode.
Preferably, the aerodynamics lens, the interior electrode and insulation tube coaxial arrangement.
Preferably, described device further includes the first T-type tee pipe fitting, the outlet of the aerodynamics lens with it is described interior
For the arrival end difference airtight connection of electrode at the both ends of the first T-type tee pipe fitting, the vacuum pump is connected to the first T
The Centronics port of type tee pipe fitting.
Preferably, described device further includes the second T-type tee pipe fitting, the middle part of the interior electrode and entering for the insulation tube
Mouth end difference airtight connection is at the both ends of the second T-type tee pipe fitting, and the discharge gas piping connection is in second T-type
The Centronics port of tee pipe fitting.
Preferably, the aerodynamics lens are made of the coaxial lens that one group of aperture is gradually reduced, and the air is dynamic
The inlet diameter of mechanics lens is 0.1-0.2mm, lens diameter 10-30mm, aperture 1-5mm, between two adjacent lens
Between be divided into 10-50mm, the outlet of the aerodynamics lens is the pipeline of a length 10-30mm, is used for and the first T
Type tee pipe fitting is connected.
Preferably, the interior electrode is electrical conduit, selects any hard metal or alloy material, preferably stainless steel, copper
Or tungsten, the internal diameter of the interior electrode are 0.5-5mm, length 30mm-80mm.
Preferably, the internal diameter of the insulation tube is 1-10mm, with a thickness of 0.5-2mm, length 10-250mm, the insulation
Material preferably ceramic or quartz, at a distance of 10-100mm between the interior electrode outlet and insulation tube outlet.
Preferably, the external electrode is close to the insulation pipe outer wall setting, and the filter membrane porosity is 20-100nm, thickness
For 0.1-1mm, the filter membrane is made of insulating material, preferably quartz or polymerizable material.
Preferably, the speed flowed in gap of the discharge gas between the interior electrode 5 and the insulation tube 7 is
0.5L/min-1L/min, one or more of the preferred helium of the discharge gas, argon gas, air, nitrogen；The alternating current
The electric voltage frequency in source is 0.5-100kHz, and peak valley voltage difference is 1-10kV, power 0.5-100W.
The beneficial effects of the utility model are: the plasma of Atmospheric particulates provided by the embodiment of the utility model ionizes
Device, device include that aerodynamics lens and plasma ionization source contain particulate matter such as aerosol in use
Air sample be inhaled into aerodynamics lens under vacuum first, in lens, aerosol particle is focused, and is become
Enter the interior electrode of plasma ionization source after a branch of, while gas molecules are taken away by vacuum pump, avoid the interference of gas,
Improve the collecting efficiency and Ionization Efficiency of aerosol particle object sample；Meanwhile using sample inlet end as plasma
The interior electrode of generating device, increases the time of contact of sample and plasma, improves Ionization Efficiency；In addition, by
Increasing by one layer of filter membrane at insulation pipe end plasma exit can stop solid particle not to be ionized to enter mass spectrum, improve
The Ionization Efficiency of particulate matter, reduces fragment ion, and obtained ion can be directly entered mass spectrometric injection port and carry out
Detection.So device provided by the utility model can carry out the qualitative of substance in the samples such as aerosol and fixed in conjunction with mass spectrum
Amount analysis.
Detailed description of the invention
Fig. 1 is the plasma ionization device structural schematic diagram of Atmospheric particulates provided by the utility model.
In figure, the meaning of each symbol is as follows:
1, aerodynamics lens；2, the first T-type tee pipe fitting；3, vacuum pump 1. interface；4, the second T-type tee pipe fitting；
5, interior electrode；6, discharge gas pipeline；7, insulation tube；8, external electrode；9, plasma；10, filter membrane；11, mass spectrum injection port；
12, vacuum pump 2. interface.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing, to this reality
It is further elaborated with novel.It should be appreciated that the specific embodiments described herein are only used to explain that this is practical
It is novel, it is not used to limit the utility model.
Compared with the ionization source that aerosol mass spectrometer in the prior art uses, using soft ionization method, i.e., on sample band
One or a small amount of several charges and it is hardly formed fragment ion, had great advantage in the quantitative analysis of complex sample.
There are mainly three types of common soft ionization sources.One is electric spray ion sources, but since it can only ionized liquids sample
Product, therefore it is unable to direct ionization solid particulate matter.Second is Matrix Assisted Laser Desorption ion source, it needs to dissolve in sample
And mixed with matrix, it is not suitable for aerosol equally.The third is chemical ionization source, it is anti-by generating active material and sample
It should make its ionization, but be limited to activated species, it generally can only one or more of ionic particles object compound.
Contain a large amount of electronics, metastable state molecule and ion in plasma, they can occur a series of with sample molecule
Reaction, makes its ionization.Plasma active is very high, can ionize most of substance, have great advantage compared to chemical ionization source.
So utilizing the ioning method of plasma in the utility model embodiment.
There was only the history of more than ten years using plasma as the research of mass ion source, research direction is mainly answered newly at present
Exploration and ion source optimization etc..The research that plasma ion source is used for particulate matter analysis is less, can be with
Remove background gas interference and by the method for the samples efficient ionization such as real atmosphere particulate matter.
In embodiment provided by the utility model, sample is gone through from plasma, meanwhile, in the front end of plasma
Air force lens are increased, air force lens can be not only used for enrichment Atmospheric particulates, and can remove big portion
Divide gaseous material, therefore device provided by the utility model, ionizing efficiency not only can be improved, particulate matter is ionized completely, and
And avoid most gaseous material interference.
As shown in Figure 1, the utility model embodiment provides a kind of plasma ionization device of Atmospheric particulates, including
Aerodynamics lens 1 and plasma ionization source, the plasma ionization source include interior electrode 5, insulation tube 7, external electrode
8, the outlet of discharge gas pipeline 6 and AC power source, the aerodynamics lens 1 is connected to the arrival end of the interior electrode 5,
And the connectivity part of the aerodynamics lens 1 and the interior electrode 5 is provided with vacuum pump, the interior electrode 5 is set in described
In insulation tube 7, the external electrode 8, the exchange are enclosed on 7 outer wall of the insulation tube in interior 5 exit of electrode
Power supply is connected between the interior electrode 5 and the external electrode 8, the inlet of the discharge gas pipeline 6 and the insulation tube 7
Vertical connection, sky of the discharge gas passed through in the discharge gas pipeline 6 between the interior electrode 5 and the insulation tube 7
It is flowed in gap, the exit of the insulation tube 7 is provided with filter membrane 10, and the air pressure in 7 exit of insulation tube is lower than the interior electricity
The air pressure of the inlet of pole 5.
The device of above structure, its working principle is that:
Air sample containing particulate matter such as aerosol is inhaled into aerodynamics lens under vacuum, therein
Aerosol particle is focused, and into the interior electrode of plasma ionization source, most gas molecules are taken away by vacuum pump.
Discharge gas enters the inlet of insulation tube from discharge gas pipeline, flows from insulation tube and interior interelectrode gap
Out, apply an alternating voltage by AC power source between inner and outer electrodes to ionize discharge gas, generate plasma.
The aerosol particle to fly out from interior electrode outlet end encounters plasma and reacts, since surface molecular gradually
It is ionized.
The ion of generation enters mass spectrum injection port by the filter membrane in insulation tube exit.The particle not ionized completely is filtered
Film intercepts, continuation and plasma reaction, until ionization completely.
As it can be seen that device provided in this embodiment, has the characteristics that as follows:
1, the aerosol particle in air is separated with gaseous material using aerodynamics lens, and by aerosol particle
Interior electrode is entered back into after focusing, and the collecting efficiency and Ionization Efficiency of aerosol particle object sample can be improved.
2, using sample inlet end as the interior electrode of plasma producing apparatus: being forced using this structure complete in sample
Portion's substance passes through plasma, reacts and then is ionized with active material therein.Such a structure increases samples and plasma
The time of contact of body, Ionization Efficiency is improved, increases mass spectral sensitivity.
3, solid particle can be stopped not by ion by increasing by one layer of filter membrane at insulation pipe end plasma exit
Change enters mass spectrum, improves the Ionization Efficiency of particulate matter.
4, by the insulation pipeline of ionization source and the same axiation of mass spectrum entrance pipe: the ion source of this structure can be with mass spectrum sample introduction
Mouth is staggered relatively or is directly connected to.In this case, the sample ions sprayed from ion source are carried by air-flow is not necessarily to deflection, it can
To enter mass spectrograph with shortest distance.Such a construction increases the efficiencies of transmission of sample ions, increase mass spectrograph sensitivity.
So the ionization of Atmospheric Grains is carried out using device provided by the utility model, high with Ionization Efficiency,
The few feature of fragment ion, and the qualitative and quantitative analysis of the sample materials such as aerosol can be carried out in conjunction with mass spectrum.
Device provided by the embodiment of the utility model, the aerodynamics lens 1, the interior electrode 5 and the insulation
Pipe 7 is coaxially disposed.
The particulate matter flowed out from aerodynamics lens outlet can enter interior electrode with the shortest distance, wear without deflection
It crosses after interior electrode and meets and react with the plasma in insulation tube.
In the utility model embodiment, described device further includes the first T-type tee pipe fitting 2, the aerodynamics lens 1
Outlet with the arrival end of the interior electrode 5 difference airtight connection in the both ends of the first T-type tee pipe fitting 2, the vacuum
Pump is connected to the Centronics port of the first T-type tee pipe fitting 2.
Using the first T-type tee pipe fitting, by aerodynamics lens and vacuum pump airtight connection, for aerodynamics lens
Draught head is provided, particulate matter is focused into a branch of and takes most of gas molecule away by realization in exit, with particulate separation.
In the utility model embodiment, described device further includes the second T-type tee pipe fitting 4, the middle part of the interior electrode 5 and
The arrival end difference airtight connection of the insulation tube 7 is in the both ends of the second T-type tee pipe fitting 4, the discharge gas pipeline 6
It is connected to the Centronics port of the second T-type tee pipe fitting 4.
Using the second T-type tee pipe fitting, by interior electrode and insulation tube are at coaxial arrangement and insulative pipe sleeve is outside interior electrode,
There is a fixed gap between the two.It is to allow the external electrode and interior electricity covered outside insulation tube at coaxial arrangement by interior electrode and insulation tube
Extremely coaxial, i.e., interior electrode is identical as dispatch from foreign news agency interpolar tangential distance, and electric discharge of the discharge gas between internal and external electrode can be made tangentially uniform.
Make discharge gas that can flow into interior electrode and insulation by discharge gas piping connection in Centronics port using the second T-type tee pipe fitting
Gap between pipe generates electric discharge between internal and external electrode, forms plasma.
In the utility model embodiment, coaxial lens group that the aerodynamics lens 1 are gradually reduced by one group of aperture
At the inlet diameter of the aerodynamics lens 1 is 0.1-0.2mm, lens diameter 10-30mm, aperture 1-5mm, two
10-50mm is divided between a adjacent lens, the outlet of the aerodynamics lens is the pipeline of a length 10-30mm,
For being connected with the first T-type tee pipe fitting.
The structure and parameter of aerodynamics lens in above structure, according to particle size, air pressure, particulate matter speed
It is selected, improves the focusing efficiency of specified particle diameter range of particle object, be conducive to improve Ionization Efficiency.
In the utility model embodiment, the interior electrode 5 can be electrical conduit, can select any hard metal or conjunction
The internal diameter of golden material, preferably stainless steel, copper or tungsten, the interior electrode 5 can be 0.5-5mm, and length can be 30mm-80mm.
In above structure, the internal diameter of interior electrode and the specific value of length make with aerodynamics lens arrangement used cooperation
With, can make particle beam pass through interior electrode when reduce be rebuffed probability, and then improve Ionization Efficiency.
In the utility model embodiment, the internal diameter of the insulation tube 7 can be 1-10mm, and thickness can be 0.5-2mm, long
Degree can be 10-250mm, the material of the insulation tube 7 can with preferably ceramic or quartz, the interior outlet of electrode 5 with it is described absolutely
It can be at a distance of 10-100mm between the outlet of edge pipe 7.
In above structure, the selection of the internal diameter of insulation tube, it is ensured that keep a fixed gap between interior electrode, make
Discharge gas smoothly circulate, but the selection of the internal diameter for keep the present apparatus in vacuum degree advantageously, insulation tube
Voltage needed for the selection of thickness can reduce ionic discharge gas.
In addition, 10-100mm is set by the distance between interior electrode outlet and insulation tube outlet in the present embodiment,
Sufficiently long flying distance can be provided in the plasma for particulate matter, guarantee the generation of ionization reaction.
In the utility model embodiment, the external electrode 8 is close to 7 outer wall of the insulation tube setting, 10 hole of filter membrane
Degree is 20-100nm, and with a thickness of 0.1-1mm, the filter membrane 10 is made of insulating material, preferably quartz or polymerizable material.
In above structure, external electrode is constructed from a material that be electrically conducting, and external electrode is close to insulation pipe outer wall setting, can reduce electricity
From voltage needed for discharge gas.
In addition, setting 20-100nm for filter membrane porosity in above structure, thickness is set as 0.1-1mm, can block
Most of partial size is greater than the particulate matter of porosity.
In the utility model embodiment, the discharge gas is in the gap between the interior electrode 5 and the insulation tube 7
The speed of flowing is 0.5L/min-1L/min, one of the preferred helium of the discharge gas, argon gas, air, nitrogen or several
Kind；The electric voltage frequency of the AC power source is 0.5-100kHz, and peak valley voltage difference is 1-10kV, power 0.5-100W.
In above structure, speed that the discharge gas is flowed in the gap between the interior electrode and the insulation tube
Degree is set as 0.5L/min-1L/min, can match with vacuum degree in device, keeps stable discharging.
In the present embodiment, discharge gas is selected as one or more of helium, argon gas, air, nitrogen, can be kept
Higher ionization activity, as will be understood by the skilled person in the art, discharge gas can be selected according to certain application cases and be ionized
The different gas of activity；In above structure, the parameter of alternating voltage and device have a pass, and in the present embodiment, electric voltage frequency is selected
It is selected as 0.5-100kHz, peak-trough electricity selection of differential pressure is 0.5-10kV, power selection 0.5-100W, it is ensured that stable generation
Plasma, sample signal intensity is higher, while improving Electrical Safety.
Specific embodiment:
As shown in Figure 1, the gaseous sample containing particulate matter is being passed through in lens by vacuum suction air dynamics lens 1
Aperture when particulate matter gradually taper up to be a branch of, fly out from lens outlet.Particulate matter passes through the first T-type threeway under effect of inertia
Pipe fitting 2 enters interior electrode 5, and gas flows out from the vacuum pump of the first T-type tee pipe fitting 2 1. interface 3.Helium is from discharge gas
Pipeline 6 enters the second T-type tee pipe fitting 4, the gap outflow between insulation tube 7 and interior electrode 5, flow velocity 0.1L/min.Interior electricity
Apply an alternating voltage by AC power source between pole 5 and external electrode 8 to ionize helium, generates plasma 9.Go out from interior electrode 5
The aerosol particle that mouth end flies out encounters plasma 9 and reacts, and particle surface molecule enters after forming ion from particulate form
Gaseous state.The vacuum pump for being connected to vacuum pump 2. interface 12 makes air pressure in mass spectrum injection port 11 be lower than interior electrode inlet air pressure, true
Particle is mobile to mass spectrum injection port 11 under sky effect and the drive of electric discharge air-flow.Ionization occurs simultaneously for particle anti-in this process
It answers, partial size is gradually reduced, if partial size is still greater than filter membrane porosity before bumping against filter membrane 10, can be blocked by filter membrane 10, is continued
Reaction.Sample ions, which are inhaled under vacuum in mass spectrum injection port 11, carries out subsequent detection.
By using above-mentioned technical proposal disclosed by the utility model, following beneficial effect: the utility model has been obtained
The plasma ionization device for the Atmospheric particulates that embodiment provides, device include aerodynamics lens and plasma ionization
Source, in use, the air sample containing particulate matter such as aerosol are inhaled into air force under vacuum first
Lens are learned, in lens, aerosol particle is focused, and the interior electrode of plasma ionization source, while gas are entered after becoming a branch of
Body small molecule is taken away by vacuum pump, avoids the interference of gas, improves the collecting efficiency and ion of aerosol particle object sample
Change efficiency；Meanwhile using sample inlet end as the interior electrode of plasma producing apparatus, sample and plasma are increased
Time of contact improves Ionization Efficiency；In addition, can be with by increasing by one layer of filter membrane at insulation pipe end plasma exit
Stop solid particle not to be ionized and enter mass spectrum, improves the Ionization Efficiency of particulate matter, reduce fragment ion, obtain
Ion can be directly entered mass spectrometric injection port and detected.So device provided by the utility model can be with mass spectrum
In conjunction with the qualitative and quantitative analysis for carrying out substance in the samples such as aerosol.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching should also regard the protection scope of the utility model.
Claims (9)
1. a kind of plasma ionization device of Atmospheric particulates, which is characterized in that including aerodynamics lens and plasma
Volume ionization source, the plasma ionization source include interior electrode, insulation tube, external electrode, discharge gas pipeline and AC power source, institute
The outlet for stating aerodynamics lens is connected to the arrival end of the interior electrode, and the aerodynamics lens and the interior electricity
The connectivity part of pole is provided with vacuum pump, and the interior electrode is set in the insulation tube, the institute at the interior electrode outlet
It states and is enclosed with the external electrode in insulation pipe outer wall, the AC power source is connected between the interior electrode and the external electrode,
The inlet vertical connection of the discharge gas pipeline and the insulation tube, the discharge gas passed through in the discharge gas pipeline
It is flowed in gap between the interior electrode and the insulation tube, the exit of the insulation tube is provided with filter membrane, described exhausted
Air pressure of the air pressure in edge pipe exit lower than the inlet of the interior electrode.
2. the plasma ionization device of Atmospheric particulates according to claim 1, which is characterized in that the air force
Learn lens, the interior electrode and insulation tube coaxial arrangement.
3. the plasma ionization device of Atmospheric particulates according to claim 1, which is characterized in that described device is also wrapped
The first T-type tee pipe fitting is included, the outlet of the aerodynamics lens exists with the arrival end difference airtight connection of the interior electrode
The both ends of the first T-type tee pipe fitting, the vacuum pump are connected to the Centronics port of the first T-type tee pipe fitting.
4. the plasma ionization device of Atmospheric particulates according to claim 1, which is characterized in that described device is also wrapped
The second T-type tee pipe fitting is included, the middle part of the interior electrode and the arrival end difference airtight connection of the insulation tube are in the 2nd T
The both ends of type tee pipe fitting, Centronics port of the discharge gas piping connection in the second T-type tee pipe fitting.
5. the plasma ionization device of Atmospheric particulates according to claim 3, which is characterized in that the air force
It learns lens to be made of the coaxial lens that one group of aperture is gradually reduced, the inlet diameter of the aerodynamics lens is 0.1-
0.2mm, lens diameter 10-30mm, aperture 1-5mm, between two adjacent lens between be divided into 10-50mm, the air
The outlet of dynamics lens is the pipeline of a length 10-30mm, for being connected with the first T-type tee pipe fitting.
6. the plasma ionization device of Atmospheric particulates according to claim 1, which is characterized in that the interior electrode is
Electrical conduit, selects any hard metal or alloy material, and the internal diameter of the interior electrode is 0.5-5mm, length 30mm-
80mm。
7. the plasma ionization device of Atmospheric particulates according to claim 1, which is characterized in that the insulation tube
Internal diameter is 1-10mm, and with a thickness of 0.5-2mm, length 10-250mm, the material of the insulation tube is ceramic or quartz, described interior
At a distance of 10-100mm between electrode outlet and insulation tube outlet.
8. the plasma ionization device of Atmospheric particulates according to claim 1, which is characterized in that the external electrode is tight
The insulation pipe outer wall setting is pasted, the filter membrane porosity is 20-100nm, and with a thickness of 0.1-1mm, the filter membrane is by insulation material
Material is made.
9. the plasma ionization device of Atmospheric particulates according to claim 1, which is characterized in that the discharge gas
The speed flowed in gap between the interior electrode and the insulation tube is 0.5L/min-1L/min, the discharge gas
For one or more of helium, argon gas, air, nitrogen；The electric voltage frequency of the AC power source is 0.5-100kHz, peak-trough electricity
Pressure difference is 1-10kV, power 0.5-100W.
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| CN201820697034.4U CN208336147U (en) | 2018-05-10 | 2018-05-10 | The plasma ionization device of Atmospheric particulates |
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| CN201820697034.4U CN208336147U (en) | 2018-05-10 | 2018-05-10 | The plasma ionization device of Atmospheric particulates |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630517A (en) * | 2018-05-10 | 2018-10-09 | 中国科学院大气物理研究所 | The plasma ionization method and device of Atmospheric particulates |
| CN113295758A (en) * | 2021-05-21 | 2021-08-24 | 中国科学院合肥物质科学研究院 | Mass spectrometer for on-line detection of chemical components in aerosol particles of cigarette smoke |
| CN117147670A (en) * | 2023-10-26 | 2023-12-01 | 广州源古纪科技有限公司 | VOCs detection method, system and equipment |
-
2018
- 2018-05-10 CN CN201820697034.4U patent/CN208336147U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630517A (en) * | 2018-05-10 | 2018-10-09 | 中国科学院大气物理研究所 | The plasma ionization method and device of Atmospheric particulates |
| CN108630517B (en) * | 2018-05-10 | 2024-01-23 | 中国科学院大气物理研究所 | Method and device for plasma ionization of atmospheric particulates |
| CN113295758A (en) * | 2021-05-21 | 2021-08-24 | 中国科学院合肥物质科学研究院 | Mass spectrometer for on-line detection of chemical components in aerosol particles of cigarette smoke |
| CN117147670A (en) * | 2023-10-26 | 2023-12-01 | 广州源古纪科技有限公司 | VOCs detection method, system and equipment |
| CN117147670B (en) * | 2023-10-26 | 2023-12-29 | 广州源古纪科技有限公司 | VOCs detection method, system and equipment |
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