CN105300765B - A kind of atmospheric aerosol organic carbon (OC)/elemental carbon (EC) visualization separation preparation facilities - Google Patents
A kind of atmospheric aerosol organic carbon (OC)/elemental carbon (EC) visualization separation preparation facilities Download PDFInfo
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- CN105300765B CN105300765B CN201510713315.5A CN201510713315A CN105300765B CN 105300765 B CN105300765 B CN 105300765B CN 201510713315 A CN201510713315 A CN 201510713315A CN 105300765 B CN105300765 B CN 105300765B
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Abstract
The invention discloses a kind of atmospheric aerosol organic carbon (OC)/elemental carbon (EC) visualization separation preparation facilities.The a port of the four-way valve, first cold-trap, valve A1, second cold-trap, valve A2, first collecting pipe, valve A3, vacuum pump is connected by pipeline sequence, another port of the four-way valve, third cold-trap, valve B1, 4th cold-trap, valve B2, second collecting pipe, valve B3, vacuum pump is connected by pipeline sequence, another port of the four-way valve is connected through vacuum main pipeline with the analysis pipe end of air-channel system, it is also connected with air inlet pipe on vacuum main pipeline, air inlet pipe is equipped with valve C, it is designed with pressure gauge on first collecting pipe and the second collecting pipe.The collection of organic carbon (OC)/elemental carbon (EC) can be fully achieved using the present invention, and collection situation may know that by the pressure gauge on collecting pipe, realize prepared by the separation of visual organic carbon (OC)/elemental carbon (EC).
Description
Technical field：
The invention belongs to field of environment engineering technology, and in particular to a kind of atmospheric aerosol organic carbon (OC)/elemental carbon
(EC) visualization separation preparation facilities.
Background technology：
Liquid or the solid particles that atmospheric aerosol refers to suspending in an atmosphere include mainly six major class aerosol particles
Son:Sand Dust Aerosol, carbon aerosol, sulfate aerosol, nitrate aerosol, ammonium salt aerosol and marine aerosol.It is
Enormous amount, complicated component, a kind of maximum pollutant of harm in urban atmosphere.It can be classified as according to aerodynamic diameter
TSP, PM10 and PM2.5 (particulate matter for respectively referring to aerodynamic diameter≤100mm, 10mm and 2.5mm).Atmospheric particulates are logical
Absorption and diffusesolarradiation are crossed to influence the energy exchange of Earth-atmospheric system, and then produce to weather system, environment and human health
Raw great influence.Current world whole world change and Atmospheric Chemistry research high order focusing atmospheric aerosol disturb Earth climate system
It is dynamic, the especially Radiative Forcing effect of carbon aerosol.Carbon aerosol in air includes organic carbon, elemental carbon.Wherein, elemental carbon
It has become in global atmosphere system and is only second to CO2Heat component, elemental carbon is one important in research global radiation balance
Parameter, in certain areas, the presence of elemental carbon can cause Aerosol radiation to force by negative radiation effect to positive radiation effect
Transformation, lead to a net warming effect.Since 1880, the 25% of global warning amplitude is attributable to element
Carbon.Therefore the discharge of constraint element carbon is one of the effective way that current mitigation of global climate warms.And the presence of organic carbon can
To cause Aerosol radiation to force the transformation by negative radiation effect to positive radiation effect, lead to a net warming effect.
In order to preferably study and control influence of the carbonaceous aerosol to Global climate change, it is therefore desirable to molten to air gas
Each component in the carbonaceous of glue carries out Separation Research, especially by its organic carbon (OC)/elemental carbon (EC) is isolated, using carbon
14 isotope technologies determine the amount ratio of fossil-fueled and biomass combustion, carry out research of tracing to the source.
A kind of atmospheric aerosol organic carbon (OC)/elemental carbon (EC) in-line analyzer is had been disclosed in the prior art,
Including：Furnace system, air-channel system, laser detection system, control system, detector are analyzed, preparation system and upper unit are collected
At.Under the action of control system, the acquisition and analysis of sample, air-channel system occur in interior stove (including sample heater and oxidation furnace)
With regime flow to sample heater injection carrier gas and automatic quantitative sample internal standard compound, laser detection system monitors OC and EC on filter membrane
Effusion process accurately divides OC and EC, the CO that detector generates tested group lease making chemical reaction2Quantitative measurment, on
Position machine software real-time rendering spectrogram, and to sample peak shape automatic identification and parsing, the quality for finally calculating various carbon components is dense
(fourth is fine, Liu Jianguo, Lu Yihuai, Wang Yaping, Lu Fan, the development of stone foundation air organic carbon/elemental carbon in-line analyzer, instrument for degree
Instruments and meters journal, 35 (6), in June, 2014, p1246-1253).
The method CTO-375 methods for measuring carbonaceous aerosol, Walkey-Black methods, thermochemical reduction are widely used at present
Method, thermophotometry etc. can visually realize atmospheric aerosol organic carbon (OC)/elemental carbon (EC) separation there are no one kind and make
Standby device.
Invention content：
The object of the present invention is to provide one kind capable of realizing atmospheric aerosol organic carbon (OC)/elemental carbon (EC) visualization point
From preparation facilities.
The atmospheric aerosol organic carbon (OC) of the present invention/elemental carbon (EC) visualization separation preparation facilities, including analytical furnace
System, air-channel system, laser detection system, control system, detector collect preparation system and host computer, the collection system
Standby system is connected with the analysis pipe end of air-channel system, which is characterized in that the collection preparation system includes four-way valve, first
Cold-trap, valve A1, the second cold-trap, valve A2, the first collecting pipe, valve A3, third cold-trap, valve B1, the 4th cold-trap, valve B2, second are collected
Pipe, valve B3, vacuum pump and valve C, a port of the four-way valve, the first cold-trap, valve A1, the second cold-trap, valve A2, first
Collecting pipe, valve A3, vacuum pump are connected by pipeline sequence, another port of the four-way valve, third cold-trap, valve B1,
4th cold-trap, valve B2, the second collecting pipe, valve B3, vacuum pump are connected by pipeline sequence, another end of the four-way valve
Mouthful it is connected with the analysis pipe end of air-channel system through vacuum main pipeline, is also connected with air inlet pipe on vacuum main pipeline, in air inlet pipe
Equipped with valve C, pressure gauge is designed on first collecting pipe and the second collecting pipe.
The pipeline and vacuum main pipeline is preferably all stainless steel pipes.
It is preferred that vacuum main pipeline is connected with the analysis pipe end of air-channel system with vacuum adapter with polyfluortetraethylene pipe.
It is preferred that the structure of first collecting pipe and the second collecting pipe is identical, it is forked at three, including one end closing,
The collecting pipe of another end opening, the sample feeding pipe being connected to collecting pipe is equipped on the top of collecting pipe, and the other end of sample feeding pipe passes through
Pipeline between pipeline (be suitable for the first collecting pipe) or valve B2 and valve B3 between sealing nut and valve A2 and valve A3 (is suitable for the
Two collecting pipes) it is connected, the open end of the collecting pipe is equipped with the knob for sealing the open end, is connected by fixed connecting rod in knob
There is taper Teflon stopper, double O-ring seals, the taper polytetrafluoroethylene (PTFE) plug are equipped on taper Teflon stopper
Son can extend in the collecting pipe of sample feeding pipe lower part, and be adapted with the size of the collecting pipe at this, be collected at this so as to seal
Pipe.In sample introduction, knob drives taper Teflon stopper past outgoing, to open collecting pipe herein, sample toward outward turning
Product enter collecting pipe lower part, after the completion of sample introduction, screw knob, make taper Teflon stopper toward collecting pipe bottom direction
It walks, until when at the collecting pipe of sample feeding pipe lower part, is adapted inside taper Teflon stopper and collecting pipe at this, to seal
Collecting pipe at this, the sealing for realizing sample are collected, and first collecting pipe or the second collecting pipe then can be removed under system,
So as to which sample is shifted.The collecting pipe and sample feeding pipe is all quartz ampoule or glass tube.
The atmospheric aerosol organic carbon (OC) of the present invention/elemental carbon (EC) visualization separation preparation facilities is to run in this way
's：
Four-way valve can be beaten respectively to A collection systems (the first cold-trap, valve A1, the second cold-trap, valve A2, the first collecting pipe, valve
) and B collection systems (third cold-trap, valve B1, the 4th cold-trap, valve B2, the second collecting pipe, valve B3) A3；
Collection process：Sample introduction is analyzed in atmospheric aerosol organic carbon (OC)/elemental carbon (EC) visualization separation preparation facilities
Before, valve C is opened, four-way valve is beaten to A collection systems, valve A1, valve A2 and valve A3 is opened, by vacuum pump by A collection systems
Air empties, and fills helium with.It is then shut off valve A1, valve A2 and valve A3.Four-way valve is beaten to B collection systems, same to open valve B1, valve
B2, valve B3 are emptied by air in B collection systems by vacuum pump, fill helium with.Valve C is finally closed, four-way valve is beaten to vacuum
Main pipeline；
After atmospheric aerosol organic carbon (OC)/elemental carbon (EC) visualization separation preparation facilities analysis sample introduction starts, soft
Part terminal it can be seen that OC/EC separation carry out situation, when see need collect the peaks OC when, four-way valve is beaten to A collection systems, at this time
Valve A1, valve A2, valve A3 are to close, and coolant liquid (impurity such as chilled water) is done with dry ice and liquid nitrogen mixed liquor at the first cold-trap,
Make coolant liquid with liquid nitrogen at the second cold-trap, open valve A1, CO2 is enriched in the second cold-trap at this time.Liquid is used at the first collecting pipe
Nitrogen makees coolant liquid, opens valve A3 and removes the liquid nitrogen at the second cold-trap, and CO2 is enriched with from the second cold-trap to the first collecting pipe at this time,
It observes the pressure gauge reading on the first collecting pipe and may know that collection situation.Collect finish tighten the first collecting pipe knob it is i.e. complete
At collection work.
Equally, when collecting the peaks EC, four-way valve is beaten respectively to B collection systems, and valve B1, valve B2, valve B3 are to close at this time,
Coolant liquid (impurity such as chilled water) is done with dry ice and liquid nitrogen mixed liquor at third cold-trap, is cooled down with liquid nitrogen at the 4th cold-trap
Liquid opens valve B1, and CO2 is enriched in the 4th cold-trap at this time.Make coolant liquid with liquid nitrogen at the second collecting pipe, opens valve B3 and remove
Liquid nitrogen at 4th cold-trap, at this time CO2 be enriched with from the 4th cold-trap to the second collecting pipe, observe the second collecting pipe on pressure gauge read
Number may know that collection situation.Collection, which finishes, tightens knob and completes collection work.
Vacuum pump is to be constantly in working condition, ensures do not have Carbon Dioxide in Air in system before acquiring sample,
During collection, the valve (valve A3 and valve B3) being connected with vacuum pump is not opened, so sample will not be taken away, because use
It is minipump and system pipeline wall is thicker, system will not be caused to damage by pressure.
It can be seen that the collection of organic carbon (OC)/elemental carbon (EC) can be fully achieved using the present invention, and pass through receipts
Pressure gauge on collector may know that collection situation, and realizing visualization, (visualization is mainly on oc/ec analytical instrument work stations
Go out cutting edge of a knife or a sword situation, come collect in due course) organic carbon (OC)/elemental carbon (EC) separation preparation.
Description of the drawings：
Fig. 1 is the collection of atmospheric aerosol organic carbon (OC)/elemental carbon (EC) visualization separation preparation facilities of the present invention
The structural schematic diagram of preparation system；
Fig. 2 is the structural schematic diagram of the first collecting pipe and the second collecting pipe；
Wherein 1, four-way valve；2, the first cold-trap；3, valve A1；4, the second cold-trap；5, valve A2；6, the first collecting pipe；7, valve A3；
8, vacuum pump；9, third cold-trap；10, valve B1；11, the 4th cold-trap；12, valve B2；13, the second collecting pipe；14, valve B3；15, valve
C；16, air inlet pipe；17, vacuum main pipeline；18,24, pressure gauge；19, collecting pipe；20, sample feeding pipe；21, knob；22, fixed to connect
Bar；23, taper Teflon stopper.
Specific implementation mode：
The following examples are further illustrations of the invention, rather than limiting the invention.
Embodiment 1：
As depicted in figs. 1 and 2, the atmospheric aerosol organic carbon (OC) of the present embodiment/elemental carbon (EC) visualization separation system
Standby device, including analysis furnace system, air-channel system, laser detection system, control system, detector collect preparation system and upper
Position machine, the collection preparation system are connected with the analysis pipe end of air-channel system, and the collection preparation system includes four-way
Valve 1, the first cold-trap 2, valve A1 3, the second cold-trap 4, valve A2 5, the first collecting pipe 6, valve A3 7, third cold-trap 9, valve B1 10,
Four cold-traps 11, valve B2 12, the second collecting pipe 13, valve B3 14, vacuum pump 8 and valve C 15, an end of the four-way valve 1
Mouth, the first cold-trap 2, valve A1 3, the second cold-trap 4, valve A2 5, the first collecting pipe 6, valve A3 7, vacuum pump 8 pass through pipeline sequence phase
Even, another port of the four-way valve, third cold-trap 9, valve B1 10, the 4th cold-trap 11, valve B2 12, the second collecting pipe
13, valve B3 14, vacuum pump 8 are connected by pipeline sequence, another port of the four-way valve through vacuum main pipeline 17 with
The analysis pipe end of air-channel system is connected, and air inlet pipe 16 is also connected on vacuum main pipeline, and air inlet pipe is equipped with valve C 15,
It is respectively equipped with pressure gauge 18,24 on first collecting pipe and the second collecting pipe, it can by pressure change before and after collecting sample
With estimation collect sample number.
The pipeline and vacuum main pipeline is all pipeline made of stainless steel material.
Vacuum main pipeline is connected using vacuum adapter with polyfluortetraethylene pipe with the analysis pipe end of air-channel system.
First collecting pipe 6 is identical with the structure of the second collecting pipe 13, forked at three, including one end closing, separately
The collecting pipe 19 of one end open, the sample feeding pipe 20 being connected to collecting pipe is equipped on the top of collecting pipe, and the other end of sample feeding pipe is logical
It crosses between the pipeline between sealing nut and valve A2 5 and valve A3 7 (being suitable for the first collecting pipe 6) or valve B2 12 and B3 14
Pipeline (being suitable for the second collecting pipe 13) is connected, and the open end of the collecting pipe is equipped with the politef rotation for sealing the open end
Button 21, knob is interior to be connected with taper Teflon stopper 23 by fixed connecting rod 22, is equipped on taper Teflon stopper
Double O-ring seals, the taper Teflon stopper can extend in the collecting pipe 19 of 20 lower part of sample feeding pipe, and with the collection at this
The size of pipe is adapted, so as to seal collecting pipe at this.In sample introduction, knob 21 drives taper polytetrafluoroethyl-ne toward outward turning
Alkene plug 23 is past outgoing, just opens collecting pipe herein, sample enters collecting pipe lower part, after the completion of sample introduction, screws knob
21, so that taper Teflon stopper 23 is walked toward 19 bottom direction of collecting pipe, until when at the collecting pipe of sample feeding pipe lower part, taper is poly-
It is adapted inside tetrafluoroethene plug 23 and collecting pipe at this, to seal collecting pipe at this, the sealing for realizing sample is collected,
Then first collecting pipe 6 or the second collecting pipe 13 can be removed under system, so as to shift sample.The collection
Pipe and sample feeding pipe are all quartz ampoule or glass tube, convenient for observation.
Claims (3)
1. a kind of atmospheric aerosol organic carbon (OC)/elemental carbon (EC) visualization separation preparation facilities, including analysis furnace system, gas
Road system, laser detection system, control system, detector, collect preparation system and host computer, the collection preparation system with
The analysis pipe end of air-channel system is connected, which is characterized in that the collection preparation system includes four-way valve, the first cold-trap, valve
A1, the second cold-trap, valve A2, the first collecting pipe, valve A3, third cold-trap, valve B1, the 4th cold-trap, valve B2, the second collecting pipe, valve B3,
Vacuum pump and valve C, a port of the four-way valve, the first cold-trap, valve A1, the second cold-trap, valve A2, the first collecting pipe,
Valve A3, vacuum pump are connected by pipeline sequence, another port of the four-way valve, third cold-trap, valve B1, the 4th cold
Trap, valve B2, the second collecting pipe, valve B3, vacuum pump are connected by pipeline sequence, another port of the four-way valve is through true
Empty main pipeline is connected with the analysis pipe end of air-channel system, and air inlet pipe is also connected on vacuum main pipeline, and air inlet pipe is equipped with valve
Door C, pressure gauge is designed on first collecting pipe and the second collecting pipe；
The structure of first collecting pipe and the second collecting pipe is identical, forked at three, including one end closing, another end opening
Collecting pipe, be equipped with the sample feeding pipe that be connected to collecting pipe on the top of collecting pipe, the other end of sample feeding pipe by sealing nut and
The pipeline between pipeline or valve B2 and valve B3 between valve A2 and valve A3 is connected, and the open end of the collecting pipe is equipped with sealing
The knob of the open end, knob is interior to be connected with taper Teflon stopper by fixed connecting rod, in taper Teflon stopper
Be equipped with double O-ring seals, which can extend in the collecting pipe of sample feeding pipe lower part, and with the receipts at this
The size of collector is adapted, so as to seal collecting pipe at this.
2. atmospheric aerosol organic carbon (OC) according to claim 1/elemental carbon (EC) visualization separation preparation facilities,
It is characterized in that, the pipeline and vacuum main pipeline are all stainless steel pipes.
3. atmospheric aerosol organic carbon (OC) according to claim 1/elemental carbon (EC) visualization separation preparation facilities,
It is characterized in that, vacuum main pipeline is connected with the analysis pipe end of air-channel system with vacuum adapter with polyfluortetraethylene pipe.
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| CN109425648B (en) * | 2017-08-28 | 2022-05-24 | 瑞湾科技（珠海）有限公司 | Sample analysis method and device for rapid thermal desorption sample injection |
| CN107976342B (en) * | 2017-11-20 | 2019-07-02 | 浙江大学 | Sample sample-preparing system and sampling method for making sample |
| CN108226274A (en) * | 2018-01-26 | 2018-06-29 | 中国科学院地球环境研究所 | 14C-AMS fast on-line analyzing instrument |
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