CN109946123A - A kind of atmospheric aerosol traps online and the method and apparatus of chemical component detection - Google Patents
A kind of atmospheric aerosol traps online and the method and apparatus of chemical component detection Download PDFInfo
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- 239000000126 substance Substances 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 239000005427 atmospheric aerosol Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000443 aerosol Substances 0.000 claims abstract description 191
- 239000012298 atmosphere Substances 0.000 claims abstract description 44
- 239000012080 ambient air Substances 0.000 claims abstract description 32
- 238000004255 ion exchange chromatography Methods 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 126
- 239000007789 gas Substances 0.000 claims description 79
- 230000003068 static effect Effects 0.000 claims description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 238000003860 storage Methods 0.000 claims description 27
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 23
- 238000005070 sampling Methods 0.000 claims description 22
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- 231100000719 pollutant Toxicity 0.000 claims description 7
- 238000009792 diffusion process Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 5
- 238000006479 redox reaction Methods 0.000 claims description 5
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Abstract
The present invention provides a kind of atmospheric aerosol and traps online and the method and apparatus of chemical component detection, belong to technical field of environmental detection, this method is after ambient air to be quantified to removing soluble gas, atmosphere is carried out to the trapping of aerosol in aerosol collection device, Trapping ways are trapped using steam, wrap steam to aerosol, cooling, make aerosol be gathered into drop confluence to collect, and carries out the process of online chemical component qualitative and quantitative detection to the liquefaction aerosol being collected into.The present invention is that ion chromatography is applied to atmosphere environment supervision, is provided simultaneously with the high precision of laboratory testing instrument and the continuous and automatic operability of online monitoring instruments.Through multichannel ion chromatography on-line detector to chemical component carry out detection and and data will test by the wireless telecommunication system of multichannel ion chromatography on-line detector in time upload to atmospheric environment and manage on platform, so that atmosphere pollution is obtained real time monitoring and prevention and treatment.
Description
Technical field
The present invention relates to technical field of environmental detection, specifically a kind of atmospheric aerosol traps online and chemical component
The method and apparatus of detection.
Background technique
Aerosol in atmosphere is collected and chemical composition analysis, traditional analysis are to acquire particulate matter by filter membrane,
Laboratory is then sent to weigh, dissolution, extract and analyzed using ion chromatography.There are particle sampling errors for this method
Greatly, sample storage is easily lost, time and effort consuming, the high frequency changing rule etc. that cannot reflect water-soluble component in Atmospheric particulates lack
Point.
Summary of the invention
Technical assignment of the invention is to solve the deficiencies in the prior art, provides a kind of atmospheric aerosol and trap online and chemical
The method and apparatus of composition detection.
The technical scheme is that realize in the following manner, a kind of online trapping inspection of atmospheric aerosol of the invention
Survey method is that after ambient air to be quantified to removing soluble gas, atmosphere is carried out catching for aerosol in aerosol collection device
Collection, Trapping ways are trapped using steam, wrap steam to aerosol, cooling, so that aerosol is gathered into drop confluence and are received
Collection, and the process of online chemical component qualitative and quantitative detection is carried out to the liquefaction aerosol being collected into.
This method is that ambient air and absorbing liquid are quantitatively introduced wet type static state circular propagation denuder respectively, quiet in wet type
By the UF membrane mode of gas permselectivity membrane in state circular propagation denuder, make absorbing liquid to solvable in ambient air
Ingredient carries out quantitative adsorption, and the absorbing liquid after absorption is collected；
Ambient air after envelope separate absorbent is transported in aerosol collection device and traps to atmospheric aerosol, trapping
It is to be had differences using the diffusion velocity of atmosphere and aerosol, is sprayed when aerosol enters aerosol collection device in steam generator
Water vapor acting under, aerosol is wrapped by a large amount of water vapour, is quickly formed drop under the state of cooling and is acquired and is caught
Collection obtains liquefaction aerosol analyte sample fluid after trapping,
By the absorbing liquid and liquefaction aerosol analyte sample fluid difference sample introduction after absorption or together sample introduction to multichannel ion
Chromatography on-line detector carries out the analysis of chemical component, constitutes real-time atmospheric aerosol and traps online and chemical component detection system
System.
Absorbing liquid uses the hydrogen peroxide of 1%~3% concentration, and the gas in wet type static state circular propagation denuder selects to penetrate
Property film film power using the reaction power that redox reaction can occur in hydrogen peroxide and ambient air with hydrogen peroxide, to environment
The lossless of soluble gas and pollutant in atmosphere fully absorbs.
Gas selective penetrated property liquid film in wet type static state circular propagation denuder uses liquid film.
Steam in steam generator derives from pure water；The control parameter of the steam of steam generator manufacture is: steam is defeated
Out 90-110 DEG C, the saturated vapor of 0.02-0.03MPa temperature, pressure.
Cooling after aerosol is wrapped by a large amount of water vapour in aerosol collection device uses vacuum cooled, vacuum pump
Working condition is standard atmospheric pressure, 20 DEG C of flow 16.7ml/min.
A kind of atmospheric aerosol traps online and chemical component detection device, mechanism include that wet type static state circular propagation is molten
Device (1), aerosol collection device (2), chemical composition analysis system (5) are lost,
Introducing device, ambient air are quantified configured with ambient air in the upstream of wet type static state circular propagation denuder (1)
Quantitative introducing device is connected to wet type static state circular propagation denuder gas access (104),
Gas permselectivity membrane is configured in wet type static state circular propagation denuder (1),
The absorbing liquid stored in absorbing liquid storage bottle (106) is by absorbing liquid delivery pump (108) and Pipeline transport to wet
In formula static state circular propagation denuder (1), absorbing liquid and atmosphere are inhaled by mass exchange between gas permselectivity membrane progress film
Receive the soluble ingredient that liquid absorbs atmosphere；Absorbing liquid is from wet type static state circular propagation denuder (1) downstream connection absorbing liquid discharge pipe
Road, absorbing liquid are discharged from absorbing liquid discharge line；
The atmosphere of wet type static state circular propagation denuder (1) passes through downstream connection wet type static state circular propagation denuder gas
Outlet pipe (118) is communicated on aerosol collection device (2)；
Aerosol collection device (2) inner cavity adds steam at atmosphere penetrating and sprays into mixed flow, and steam wraps aerosol,
Aerosol collection device (2) end is configured with cooling system, and cooling system wraps the steam in aerosol collection device
Aerosol cools down, aerosol collection device (2) end connection liquefaction aerosol analyte sample fluid confluence collection device,
The aerosol analyte sample fluid confluence collection device that liquefies passes through automatic sampling apparatus (505) connecting multi-channel ion color
It composes on-line detector (508) and carries out on-line checking.
It is by air particle cutter entrance (101), air particle cutter that ambient air, which quantifies introducing device,
(102), air particle cutter outlet (103) is constituted, and ambient air quantifies introducing device and is configured with air volume sensor,
It is constant speed that air volume sensor monitoring ambient air, which quantifies introducing device and introduces the flow velocity of atmosphere,；
Steam sprays into mixed flow and is provided by steam generator (3), and steam generator (3) is configured with pure water storage bottle (304), pure
Water storage bottle (304) connects pure water delivery pump inlet tube (303), is provided with pure water on pure water delivery pump inlet tube (303) pipeline
Delivery pump (305), pure water delivery pump inlet tube (303) are connected to steam generation by steam generator fluid inlet pipe (302)
Device (3), steam generator (3) are configured with steam generator electric-heating control system (306), and steam generator (3) passes through steam
Generator exports pipe and sub-assembly (301) deliver a vapor to aerosol collection device (2) inner cavity and atmosphere mixed flow, and to aerosol
It is wrapped；
Cooling system uses vacuum cooled, and vacuum cooled configures vacuum generator system, and vacuum generator system (4) is by gas
Colloidal sol trap vacuum inlet connecting tube (401) is connected to aerosol collection device (2) end, and aerosol collection device vacuum inlet connects
Adapter tube (401) is sequentially connected gas flow sensor (402), vacuum meter (403), vacuum pump inlet (404) vacuum pump, vacuum pump
Outlet；Vacuum pump provides vacuum cooled for aerosol collection device (2) inner cavity；
Aerosol analyte sample fluid confluence collection device liquefy by sample to be tested import (501), liquefaction aerosol sample to be measured
Product connection valve (502) and liquefaction aerosol connecting tube (506) connect and compose, and liquefy aerosol sample to be tested connection valve (502)
Upper to export (503) (504) configured with sample to be tested, liquefaction aerosol connecting tube (506) is connected to automatic sampling apparatus (505)
On, automatic sampling apparatus (505) is connected on multichannel ion chromatography on-line detector (508).
Absorbing liquid is from wet type static state circular propagation denuder (1) downstream connection absorbing liquid discharge line, and absorbing liquid is from absorption
The discharge of liquid discharge line；Discharge is through wet type static state circular propagation denuder absorbing liquid outlet (114), wet type static state circular propagation
Denuder absorbing liquid outlet control valve (116), wet type static state circular propagation denuder absorbing liquid outlet (115) is flowed to can
Insoluble gas absorbing liquid storage bottle (117)；
Soluble gas absorbing liquid is connected to automatic sampling apparatus (505) by soluble gas absorbing liquid storage bottle (117), can
Insoluble gas absorbing liquid distinguishes sample introduction with liquefaction aerosol analyte sample fluid or sample introduction is examined to multichannel ion chromatography online together
Survey the analysis that instrument carries out chemical component.
Application of the ion chromatography in atmosphere environment supervision chemical component；And steam generator is in aerosol collection device
In application.
Generated beneficial effect is the present invention compared with prior art:
A kind of atmospheric aerosol of the invention traps online and the method and apparatus of chemical component detection is by ion chromatography
Technology is applied to atmosphere environment supervision, be provided simultaneously with laboratory testing instrument high precision and online monitoring instruments it is continuous from
Dynamicization operability.
Gas sampling assembly is wet type static state circular propagation denuder, using gas selective penetrated property membrane technology, in air
Gaseous pollutant may pass through film and enter absorbing liquid channel, and react with hydrogen peroxide.Reaction process principle of dynamics is redox
Reaction, ensure that and fully absorb to the lossless of gaseous pollutant.Soluble gas can in wet type static state circular propagation denuder
By quantitative adsorption.
It is had differences using the diffusion velocity of gas and aerosol, aerosol all enters gas from aerosol collection device entrance
When colloidal sol trap under the water vapor acting that steam generator sprays, aerosol is wrapped by a large amount of water vapour, certainly cooling
Drop is quickly formed under state, is acquired from the outlet of aerosol collection device sample to be tested；
Chemical component detect through multichannel ion chromatography on-line detector and and is existed by multichannel ion chromatography
The wireless telecommunication system of line detector will test data in time and upload on atmospheric environment management platform, and atmosphere pollution is made to obtain reality
When monitoring and prevention and treatment.
A kind of atmospheric aerosol provided by the invention traps online and chemical component detection device, static round using wet type
Denuder is spread with the aerosol collection device set of steam generator, enables vacuum pump in perseverance by controlling flow sensor
It works under warm constant current, so that the aerosol in all big gas samples is obtained, by multichannel ion chromatography on-line detector to chemistry
Ingredient is analyzed.Have many advantages, such as that real-time, quick, accurate, operation and maintenance are simple.
It can in time, accurately will test data through the invention to upload on atmospheric environment management platform, obtain atmosphere pollution
To real time monitoring and prevention and treatment.
Detailed description of the invention
Attached drawing 1 is structural schematic diagram of the invention.
Marks in the drawings respectively indicate:
1, wet type static state circular propagation denuder, 2, aerosol collection device, 3, steam generator, 4, vacuum generator system
System, 5, chemical composition analysis system,
101, air particle cutter entrance,
102, air particle cutter,
103, air particle cutter exports,
104, wet type static state circular propagation denuder gas access,
105, wet type static state circular propagation denuder gas vent,
106, absorbing liquid storage bottle,
107, absorbing liquid delivery pump inlet tube,
108, absorbing liquid delivery pump,
109, absorbing liquid conveys pump discharge pipe,
110-111, wet type static state circular propagation denuder absorbing liquid entrance,
112-113, absorbing liquid delivery pump outlet flow control valves,
114, wet type static state circular propagation denuder absorbing liquid outlet,
115, wet type static state circular propagation denuder absorbing liquid discharge pipe,
116, wet type static state circular propagation denuder absorbing liquid outlet control valve,
117, soluble gas absorbing liquid storage bottle,
201, aerosol collection device import,
202, aerosol collection device steam inlet,
203, aerosol collection device vacuum inlet,
204, aerosol collection device standard specimen import,
205, aerosol collection device sample to be tested exports,
206, aerosol collection device overflow box outlet,
207, aerosol collection device condensate outlet,
208, overflowing liquid and condensate liquid receiving flask,
301, steam generator outlet pipe and sub-assembly,
302, steam generator fluid inlet pipe,
303, pure water delivery pump inlet tube,
304, pure water storage bottle,
305, pure water delivery pump,
306, steam generator electric-heating control system,
401, aerosol collection device vacuum inlet connecting tube,
402, gas flow sensor,
403, vacuum meter,
404, vacuum pump inlet,
405, vacuum pump discharge,
501, sample to be tested import,
502, liquefy aerosol sample to be tested connection valve,
503-504, sample to be tested outlet,
505, automatic sampling apparatus,
506, liquefy aerosol connecting tube,
508, multichannel ion chromatography on-line detector,
509, aerosol collection device sample to be tested outlet.
Specific embodiment
A kind of atmospheric aerosol of the invention is trapped online with reference to the accompanying drawing and chemical component detection method and dress
It sets and is described in detail below.
As shown in the picture, the method and apparatus that a kind of atmospheric aerosol of the invention traps online and chemical component detects,
This method is that ambient air and absorbing liquid are quantitatively introduced wet type static state circular propagation denuder respectively, in the static round expansion of wet type
The UF membrane mode in denuder by gas permselectivity membrane is dissipated, carries out absorbing liquid to the soluble ingredient in ambient air
Quantitative adsorption collects the absorbing liquid after absorption；
Ambient air after envelope separate absorbent is transported in aerosol collection device and traps to atmospheric aerosol, trapping
It is to be had differences using the diffusion velocity of atmosphere and aerosol, is sprayed when aerosol enters aerosol collection device in steam generator
Water vapor acting under, aerosol is wrapped by a large amount of water vapour, is quickly formed drop under the state of cooling and is acquired and is caught
Collection obtains liquefaction aerosol analyte sample fluid after trapping,
By the absorbing liquid and liquefaction aerosol analyte sample fluid difference sample introduction after absorption or together sample introduction to multichannel ion
Chromatography on-line detector carries out the analysis of chemical component, constitutes real-time atmospheric aerosol and traps online and chemical component detection system
System.
Absorbing liquid uses hydrogen peroxide (hydrogen peroxide) hydrogen peroxide of 1%--3% concentration, wet type static state circular propagation denuder
With hydrogen peroxide redox reaction can occur for the film power of interior gas permselectivity membrane using in hydrogen peroxide and ambient air
Reaction power, in ambient air soluble gas and the lossless of pollutant fully absorb.
Gas permselectivity membrane in wet type static state circular propagation denuder uses liquid film.
Steam in steam generator derives from pure water；90~110 DEG C of the temperature of the steam output of steam generator, 0.02
The saturated vapor of~0.03MPa pressure.
Cooling after aerosol is wrapped by a large amount of water vapour in aerosol collection device uses vacuum cooled, vacuum pump
Working condition is standard atmospheric pressure, 20 DEG C of flow 16.7ml/min.
Gas sampling assembly is wet type static state circular propagation denuder, using gas selective penetrated property membrane technology, in air
Gaseous pollutant may pass through film and enter absorbing liquid channel, and react with hydrogen peroxide.Reaction process principle of dynamics is redox
Reaction, ensure that and fully absorb to the lossless of gaseous pollutant.Soluble gas can in wet type static state circular propagation denuder
By quantitative adsorption；
It is had differences using the diffusion velocity of gas and aerosol, aerosol all enters gas from aerosol collection device entrance
When colloidal sol trap under the water vapor acting that steam generator sprays, aerosol is wrapped by a large amount of water vapour, certainly cooling
Drop is quickly formed under state, is acquired from the outlet of aerosol collection device sample to be tested；
Through multichannel ion chromatography on-line detector to chemical component carry out detect and by multichannel ion chromatography it is online
The wireless telecommunication system of detector will test data in time and upload on atmospheric environment management platform, obtain atmosphere pollution in real time
Monitoring and prevention and treatment.
A kind of atmospheric aerosol traps online and chemical component detection device specifically includes that wet type static state circular propagation corrosion
Device (1), aerosol collection device (2), steam generator (3), vacuum generator system (4), chemical composition analysis system (5).
Wherein,
Wet type static state circular propagation denuder (1) includes: air knife (102), air knife entrance (101), sky
Autogenous cutting cutter exports (103), wet type static state circular propagation denuder gas access (104), wet type static state circular propagation denuder
Gas vent (105), absorbing liquid delivery pump (108), absorbing liquid delivery pump inlet tube (107), is inhaled at absorbing liquid storage bottle (106)
Receipts liquid conveying pump discharge pipe (109), absorbing liquid delivery pump outlet flow control valves (112) (113), wet type static state circular propagation are molten
Lose device absorbing liquid entrance (110) (111), wet type static state circular propagation denuder absorbing liquid outlet (114), the static circle of wet type
Spread denuder absorbing liquid outlet control valve (116), wet type static state circular propagation denuder absorbing liquid outlet (115), can
Insoluble gas absorbing liquid storage bottle (117), wet type static state circular propagation denuder gas outlet pipe (118)；
Aerosol collection device (2) include: aerosol collection device import (201), aerosol collection device steam inlet (202),
Aerosol collection device vacuum inlet (203), aerosol collection device standard specimen import (204), the outlet of aerosol collection device sample to be tested
(205), aerosol collection device overflow box outlet (206), aerosol collection device condensate outlet (207), overflowing liquid and condensate liquid
Receiving flask (208)；
Steam generator (3) vacuum generator system (4) steam generator outlet pipe and sub-assembly (301), steam generation
Device fluid inlet pipe (302), pure water storage bottle (304), pure water delivery pump (305), pure water delivery pump inlet tube (303), steam
Generator electric-heating control system (306)；
Vacuum generator system (4) includes: aerosol collection device vacuum inlet connecting tube (401), gas flow sensor
(402), vacuum meter (403), vacuum pump inlet (404), vacuum pump discharge (405)；
Chemical composition analysis system (5) include: liquefaction aerosol sample to be tested connection valve (502), liquefaction aerosol it is to be measured
Sample connection valve is equipped with: sample to be tested import (501), sample to be tested outlet (503) and (504), automatic sampling apparatus (505),
Liquefaction aerosol connecting tube (506), soluble gas connecting tube (507), multichannel ion chromatography on-line detector (508), gas
Colloidal sol trap sample to be tested outlet (509).
The type of attachment of the device are as follows: wet type static state circular propagation denuder gas outlet pipe (118) and aerosol collection device
Import (201) connection；Steam generator outlet pipe and sub-assembly (301) are connect with aerosol collection device steam inlet (202)；Gas
Colloidal sol trap vacuum inlet (203) is connect with aerosol collection device vacuum inlet connecting tube (401)；Aerosol collection device is to be measured
Sample export (205) is connect with sample to be tested import (501) by aerosol collection device sample to be tested outlet (509)；Automatically
Sampling device (505) is connect with multichannel ion chromatography on-line detector (508)；Atmospheric aerosol is constituted to trap and change online
Learn component detection apparatus.
The present apparatus, it can be with the chemical component of on-line real time monitoring atmospheric aerosol, and is existed by multichannel ion chromatography
The wireless telecommunication system of line detector will test data in time and upload on atmospheric environment management platform, and atmosphere pollution is made to obtain reality
When monitoring and prevention and treatment.
Existing atmospheric aerosol detection device acquires particulate matter by filter membrane, is then sent to laboratory and weighs, dissolves, mentions
It takes and is analyzed using ion chromatography.Sampling error is big, sample storage is easily lost, time and effort consuming, cannot reflect airborne particulate
In object the disadvantages of the high frequency changing rule of water-soluble component.
The device, using wet type static state circular propagation denuder with steam generator aerosol collection device set,
So that vacuum pump is worked under constant temperature crossing current by controlling flow sensor, to obtain the aerosol in all big gas samples, leads to
Excessive channel ions chromatography on-line detector analyzes chemical component.With real-time, quick, accurate, operation and maintenance are simple
The advantages that.
The device can in time, accurately will test data and upload on atmospheric environment management platform, and atmosphere pollution is made to obtain reality
When monitoring and prevention and treatment.
Atmospheric aerosol of the invention traps online and chemical component detection device, and mechanism includes the static round expansion of wet type
Denuder (1), aerosol collection device (2), chemical composition analysis system (5) are dissipated,
Introducing device, ambient air are quantified configured with ambient air in the upstream of wet type static state circular propagation denuder (1)
Quantitative introducing device is connected to wet type static state circular propagation denuder gas access (104),
Gas permselectivity membrane is configured in wet type static state circular propagation denuder (1),
The absorbing liquid stored in absorbing liquid storage bottle (106) is by absorbing liquid delivery pump (108) and Pipeline transport to wet
In formula static state circular propagation denuder (1), absorbing liquid and atmosphere are inhaled by mass exchange between gas permselectivity membrane progress film
Receive the soluble ingredient that liquid absorbs atmosphere；Absorbing liquid is from wet type static state circular propagation denuder (1) downstream connection absorbing liquid discharge pipe
Road, absorbing liquid are discharged from absorbing liquid discharge line；
The atmosphere of wet type static state circular propagation denuder (1) passes through downstream connection wet type static state circular propagation denuder gas
Outlet pipe (118) is communicated on aerosol collection device (2)；
Aerosol collection device (2) inner cavity adds steam at atmosphere penetrating and sprays into mixed flow, and steam wraps aerosol,
Aerosol collection device (2) end is configured with cooling system, and cooling system wraps the steam in aerosol collection device
Aerosol cools down, aerosol collection device (2) end connection liquefaction aerosol analyte sample fluid confluence collection device,
The aerosol analyte sample fluid confluence collection device that liquefies passes through automatic sampling apparatus (505) connecting multi-channel ion color
It composes on-line detector (508) and carries out on-line checking.
It is by air particle cutter entrance (101), air particle cutter that ambient air, which quantifies introducing device,
(102), air particle cutter outlet (103) is constituted, and ambient air quantifies introducing device and is configured with air volume sensor,
It is constant speed that air volume sensor monitoring ambient air, which quantifies introducing device and introduces the flow velocity of atmosphere,；
Steam sprays into mixed flow and is provided by steam generator (3), and steam generator (3) is configured with pure water storage bottle (304), pure
Water storage bottle (304) connects pure water delivery pump inlet tube (303), is provided with pure water on pure water delivery pump inlet tube (303) pipeline
Delivery pump (305), pure water delivery pump inlet tube (303) are connected to steam generation by steam generator fluid inlet pipe (302)
Device (3), steam generator (3) are configured with steam generator electric-heating control system (306), and steam generator (3) passes through steam
Generator exports pipe and sub-assembly (301) deliver a vapor to aerosol collection device (2) inner cavity and atmosphere mixed flow, and to aerosol
It is wrapped；
Cooling system uses vacuum cooled, and vacuum cooled configures vacuum generator system, and vacuum generator system (4) is by gas
Colloidal sol trap vacuum inlet connecting tube (401) is connected to aerosol collection device (2) end, and aerosol collection device vacuum inlet connects
Adapter tube (401) is sequentially connected gas flow sensor (402), vacuum meter (403), vacuum pump inlet (404) vacuum pump (4), true
Empty pump discharge；Vacuum pump provides vacuum cooled for aerosol collection device (2) inner cavity；
Aerosol analyte sample fluid confluence collection device liquefy by sample to be tested import (501), liquefaction aerosol sample to be measured
Product connection valve (502) and liquefaction aerosol connecting tube (506) connect and compose, and liquefy aerosol sample to be tested connection valve (502)
Upper to export (503) (504) configured with sample to be tested, liquefaction aerosol connecting tube (506) is connected to automatic sampling apparatus (505)
On, automatic sampling apparatus (505) is connected on multichannel ion chromatography on-line detector (508).
Absorbing liquid is from wet type static state circular propagation denuder (1) downstream connection absorbing liquid discharge line, and absorbing liquid is from absorption
The discharge of liquid discharge line；Discharge is through wet type static state circular propagation denuder absorbing liquid outlet (114), wet type static state circular propagation
Denuder absorbing liquid outlet control valve (116), wet type static state circular propagation denuder absorbing liquid outlet (115) is flowed to can
Insoluble gas absorbing liquid storage bottle (117)；
Soluble gas absorbing liquid is connected to automatic sampling apparatus (505) by soluble gas absorbing liquid storage bottle (117), can
Insoluble gas absorbing liquid distinguishes sample introduction with liquefaction aerosol analyte sample fluid or sample introduction is examined to multichannel ion chromatography online together
Survey the analysis that instrument carries out chemical component.
The path of air-flow, liquid stream, cold flow in aerosol collection device (2):
It is molten into gas by aerosol collection device import (201) by the atmosphere of wet type static state circular propagation denuder (1)
Glue trap (2), the aerosol collection device steam in parallel on aerosol collection device (2) inner cavity preceding pipeline that atmosphere enters and flows through
Inlet pipe, steam wrap aerosol in aerosol collection device inner cavity preceding pipeline and atmosphere mixed flow, water vapour, form liquefied gas
Colloidal sol；
The periphery of aerosol collection device (2) inner cavity is set as the vacuum chamber of sealing, and inner cavity and vacuum chamber are in the spout of inner cavity
End place communicates, and spout end is set as undergauge spout end,
Be provided with the mixed chamber of spray at spout end, spray the standard specimen import of mixed chamber connection upstream, standard specimen liquid by standard specimen import into
Enter to spray mixed chamber, the liquefaction aerosol mixed flow of the ejection at standard specimen liquid and spout end is simultaneously exported by aerosol collection device sample to be tested
(205) it is expelled to aerosol collection device sample to be tested outlet (509), then by entering liquefaction aerosol sample to be tested connection valve
(502) enter automatic sampling apparatus (505)；
Vacuum chamber connects vacuum pump, and vacuum pump provides vacuum degree for vacuum chamber, is used for vacuum condensation steam and liquefied gas
Colloidal sol, steam condensate and liquefaction aerosol overflowing liquid pass through, aerosol collection device condensate outlet (207) aerosol collection
Device overflow box outlet (206) is collected into overflowing liquid and condensate liquid receiving flask (208)；
Multichannel ion chromatography on-line detector (508) summarize ingredient in soluble gas absorbing liquid storage bottle (117),
Aerosol collection device sample to be tested exports the ingredient of (205) and the ingredient of overflowing liquid and condensate liquid receiving flask (208), is examined
Survey analysis.
Atmospheric aerosol of the invention traps online and the operating process of chemical component detection device is:
(1) after vacuum pump is opened, atmosphere to be measured enters wet type static state circular propagation denuder through cutter, passes through big air-flow
Quantity sensor adjusts atmosphere charge flow rate and pressure, keeps the flow velocity of 16.7L/min；
(2) absorbing liquid is continuously conveyed to wet type static state circular propagation denuder absorbing liquid delivery pump, keeps wet type quiet
Wetting state is in state circular propagation denuder, soluble gas is quantitatively inhaled in wet type static state circular propagation denuder
It receives；
(3) since the diffusion velocity of gas and aerosol has differences, aerosol all from aerosol collection device entrance into
Enter aerosol collection device, under the water vapor acting that steam generator sprays, aerosol is wrapped by a large amount of water vapour, self cooling
But drop is quickly formed under state, exports flow out from aerosol collection device sample to be tested under the effect of gravity；
(4) insoluble gas and waste steam are discharged by vacuum pump discharge, and condensed water and overflowing liquid pass through aerosol
Trap overflow box outlet and the discharge of aerosol trap condensate outlet；
(5) sample to be tested that aerosol collection device obtains passes through automatic sampling through the aerosol sample to be tested connection valve that liquefies
Device enters multichannel ion chromatography on-line detector and carries out chemical component detection；
(6) it is online by multichannel ion chromatography after multichannel ion chromatography on-line detector detects chemical component
The wireless telecommunication system of detector will test data in time and upload on atmospheric environment management platform, obtain atmosphere pollution in real time
Monitoring and prevention and treatment.
Claims (10)
1. a kind of online trapping detection method of atmospheric aerosol, it is characterised in that this method be ambient air is quantified into removing can
After insoluble gas, atmosphere is carried out to the trapping of aerosol in aerosol collection device, Trapping ways are trapped using steam, make steam
Aerosol is wrapped, it is cooling, so that aerosol is gathered into drop confluence and collect, and the liquefaction aerosol being collected into is carried out
The process of line chemical component qualitative and quantitative detection.
2. a kind of online trapping detection method of atmospheric aerosol, it is characterised in that this method is by ambient air and absorbing liquid point
It does not introduce wet type static state circular propagation denuder quantitatively, passes through gas selective penetrated property in wet type static state circular propagation denuder
The UF membrane mode of film makes absorbing liquid carry out quantitative adsorption to the soluble ingredient in ambient air, and the absorbing liquid after absorption is received
Collection；
Ambient air after envelope separate absorbent is transported in aerosol collection device and traps to atmospheric aerosol, and trapping is benefit
It is had differences with the diffusion velocity of atmosphere and aerosol, aerosol enters the water sprayed when aerosol collection device in steam generator
Under vapor action, aerosol is wrapped by a large amount of water vapour, is quickly formed drop under the state of cooling and is acquired and is trapped, and is caught
Liquefaction aerosol analyte sample fluid is obtained after collection,
By the absorbing liquid and liquefaction aerosol analyte sample fluid difference sample introduction after absorption or together sample introduction to multichannel ion chromatography
On-line detector carries out the analysis of chemical component, constitutes real-time atmospheric aerosol and traps online and chemical component detection system.
3. a kind of online trapping detection method of atmospheric aerosol according to claim 2, it is characterised in that: absorbing liquid is adopted
With the hydrogen peroxide of 1%~3% concentration, the film power of the gas permselectivity membrane in wet type static state circular propagation denuder is used
The reaction power that redox reaction can occur in hydrogen peroxide and ambient air with hydrogen peroxide, to the soluble gas in ambient air
Body and the lossless of pollutant fully absorb.
4. a kind of online trapping detection method of atmospheric aerosol according to claim 2 or 3, it is characterised in that: wet type
Gas permselectivity membrane in static circular propagation denuder is liquid film.
5. a kind of online trapping detection method of atmospheric aerosol according to claim 2, it is characterised in that: steam generation
Steam in device derives from pure water；90~110 DEG C of temperature, the 0.02~0.03MPa pressure of the steam output of steam generator
Saturated vapor.
6. a kind of online trapping detection method of atmospheric aerosol according to claim 2, it is characterised in that: aerosol is caught
Cooling after aerosol is wrapped by a large amount of water vapour in storage uses vacuum cooled, standard atmospheric pressure, 20 DEG C of flows
16.7ml/min。
7. a kind of atmospheric aerosol traps online and chemical component detection device, it is characterised in that including wet type static state circular propagation
Denuder (1), aerosol collection device (2), chemical composition analysis system (5),
Introducing device is quantified configured with ambient air in the upstream of wet type static state circular propagation denuder (1), ambient air is quantitative
Introducing device is connected to wet type static state circular propagation denuder gas access (104),
Gas permselectivity membrane is configured in wet type static state circular propagation denuder (1),
The absorbing liquid stored in absorbing liquid storage bottle (106) is quiet to wet type by absorbing liquid delivery pump (108) and Pipeline transport
In state circular propagation denuder (1), absorbing liquid and atmosphere pass through mass exchange, absorbing liquid between gas permselectivity membrane progress film
Absorb the soluble ingredient of atmosphere；Absorbing liquid is inhaled from wet type static state circular propagation denuder (1) downstream connection absorbing liquid discharge line
Liquid is received to be discharged from absorbing liquid discharge line；
The atmosphere of wet type static state circular propagation denuder (1) passes through downstream connection wet type static state circular propagation denuder gas outlet pipe
(118) it is communicated on aerosol collection device (2)；
Aerosol collection device (2) inner cavity adds steam at atmosphere penetrating and sprays into mixed flow, and steam wraps aerosol,
Aerosol collection device (2) end is configured with cooling system, and it is molten that cooling system wraps gas to the steam in aerosol collection device
Glue cools down, aerosol collection device (2) end connection liquefaction aerosol analyte sample fluid confluence collection device,
Liquefaction aerosol analyte sample fluid confluence collection device is existed by automatic sampling apparatus (505) connecting multi-channel ion chromatography
Line detector (508) carries out on-line checking.
8. a kind of atmospheric aerosol according to claim 7 traps online and chemical component detection device, it is characterised in that:
Ambient air quantify introducing device be by air particle cutter entrance (101), air particle cutter (102),
Air particle cutter exports (103) and constitutes, and ambient air quantifies introducing device configured with air volume sensor, big air-flow
It is constant speed that quantity sensor monitoring ambient air, which quantifies introducing device and introduces the flow velocity of atmosphere,；
Steam sprays into mixed flow and is provided by steam generator (3), and steam generator (3) is configured with pure water storage bottle (304), pure water storage
Bottle (304) connection pure water delivery pump inlet tube (303) is deposited, pure water conveying is provided on pure water delivery pump inlet tube (303) pipeline
It pumps (305), pure water delivery pump inlet tube (303) is connected to steam generator by steam generator fluid inlet pipe (302)
(3), steam generator (3) is configured with steam generator electric-heating control system (306), and steam generator (3) is sent out by steam
Raw device outlet and sub-assembly (301) deliver a vapor to aerosol collection device (2) inner cavity and atmosphere mixed flow, and to aerosol into
Row wraps；
Cooling system uses vacuum cooled, and vacuum cooled configures vacuum generator system, and vacuum generator system (4) is by aerosol
Trap vacuum inlet connecting tube (401) is connected to aerosol collection device (2) end, aerosol collection device vacuum inlet connecting tube
(401) gas flow sensor (402), vacuum meter (403), vacuum pump inlet (404), vacuum pump, vacuum pump row are sequentially connected
It exports (405)；Vacuum pump provides vacuum cooled for aerosol collection device (2) inner cavity；
The aerosol analyte sample fluid confluence collection device that liquefies is connected by sample to be tested import (501), liquefaction aerosol sample to be tested
It connects valve (502) and liquefaction aerosol connecting tube (506) connects and composes, match in liquefaction aerosol sample to be tested connection valve (502)
It is equipped with sample to be tested outlet (503) (504), liquefaction aerosol connecting tube (506) is connected on automatic sampling apparatus (505), from
Dynamic sampling device (505) are connected on multichannel ion chromatography on-line detector (508).
9. a kind of atmospheric aerosol according to claim 7 traps online and chemical component detection device, it is characterised in that:
Absorbing liquid is arranged from wet type static state circular propagation denuder (1) downstream connection absorbing liquid discharge line, absorbing liquid from absorbing liquid
Pipeline is discharged out；Discharge is through wet type static state circular propagation denuder absorbing liquid outlet (114), wet type static state circular propagation corrosion
Device absorbing liquid outlet control valve (116), wet type static state circular propagation denuder absorbing liquid outlet (115) are flowed to solubility
Gas absorbing liquid storage bottle (117)；
Soluble gas absorbing liquid is connected to automatic sampling apparatus (505) by soluble gas absorbing liquid storage bottle (117), soluble
Gas absorbing liquid and liquefaction aerosol analyte sample fluid difference sample introduction or together sample introduction are to multichannel ion chromatography on-line detector
Carry out the analysis of chemical component.
10. a kind of atmospheric aerosol according to claim 7,8 or 9 traps online and chemical component detection device, special
Sign is:
It is caught by aerosol collection device import (201) into aerosol by the atmosphere of wet type static state circular propagation denuder (1)
Storage (2), on aerosol collection device (2) inner cavity preceding pipeline that atmosphere enters and flows through in parallel aerosol collection device steam into
Pipe, steam wrap aerosol in aerosol collection device inner cavity preceding pipeline and atmosphere mixed flow, water vapour, and it is molten to form liquefied gas
Glue；
The periphery of aerosol collection device (2) inner cavity is set as the vacuum chamber of sealing, inner cavity and vacuum chamber in the spout end of inner cavity it
Place communicates, and spout end is set as undergauge spout end,
It is provided with the mixed chamber of spray at spout end, sprays the standard specimen import of mixed chamber connection upstream, standard specimen liquid enters spray by standard specimen import
Mixed chamber, the liquefaction aerosol mixed flow of the ejection at standard specimen liquid and spout end simultaneously pass through aerosol collection device sample to be tested outlet (205)
It is expelled to aerosol collection device sample to be tested outlet (509), then by entering liquefaction aerosol sample to be tested connection valve (502)
Into automatic sampling apparatus (505)；
Vacuum chamber connects vacuum pump, and vacuum pump provides vacuum degree for vacuum chamber, is used for vacuum condensation steam and liquefaction aerosol,
Steam condensate and liquefaction aerosol overflowing liquid pass through, aerosol collection device condensate outlet (207) aerosol collection device overflows
Flow liquid outlet (206) is collected into overflowing liquid and condensate liquid receiving flask (208)；
It is molten that multichannel ion chromatography on-line detector (508) summarizes ingredient, gas in soluble gas absorbing liquid storage bottle (117)
Glue trap sample to be tested exports the ingredient of (205) and the ingredient of overflowing liquid and condensate liquid receiving flask (208), carries out detection point
Analysis.
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