CN108008070A - It is a kind of that photochemically reactive analysis method is occurred to atmosphere organic pollutant - Google Patents
It is a kind of that photochemically reactive analysis method is occurred to atmosphere organic pollutant Download PDFInfo
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- CN108008070A CN108008070A CN201711171827.9A CN201711171827A CN108008070A CN 108008070 A CN108008070 A CN 108008070A CN 201711171827 A CN201711171827 A CN 201711171827A CN 108008070 A CN108008070 A CN 108008070A
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- 238000004458 analytical method Methods 0.000 title claims abstract description 11
- 239000002957 persistent organic pollutant Substances 0.000 title claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 44
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 238000006552 photochemical reaction Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000000740 bleeding effect Effects 0.000 claims abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 238000010926 purge Methods 0.000 claims abstract description 11
- 239000012495 reaction gas Substances 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000004451 qualitative analysis Methods 0.000 claims abstract description 3
- 238000004445 quantitative analysis Methods 0.000 claims abstract description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 12
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 2
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 claims 1
- 238000003915 air pollution Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000001294 propane Substances 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 244000050510 Cunninghamia lanceolata Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- VGQXTTSVLMQFHM-UHFFFAOYSA-N peroxyacetyl nitrate Chemical compound CC(=O)OO[N+]([O-])=O VGQXTTSVLMQFHM-UHFFFAOYSA-N 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0039—O3
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
It is a kind of that photochemically reactive analysis method is occurred to atmosphere organic pollutant, it is related to a kind of air pollution analysis method, the described method includes procedure below：To occur first in simulated atmosphere photochemically reactive experimental provision it is closed after, connect and open vacuum pump operation 5 10 minutes, the gas in withdrawing device；Close bleeding point valve；The ultraviolet lamp in reaction unit is opened, high pure nitrogen purge purifies reaction babinet again；Reaction gas inlet valve is opened, is passed through a certain concentration and the organic pollution of species；Close reaction gas inlet valve；Power on, open the ultraviolet lamp in reaction chamber body, start photochemical reaction；By the situation of change and generation product of specific organic pollution in qualitative and quantitative analysis reacting gas, determine the possible mechanism of organic pollution photochemical reaction with forming the path of photochemical fog.So as to targetedly carry out photochemical reaction processing to pollution by path.
Description
Technical field
The present invention relates to a kind of analysis method to atmosphere pollution, and atmosphere organic pollutant is sent out more particularly to a kind of
Raw photochemically reactive analysis method.
Background technology
In recent years, the trans-regional property of atmosphere pollution, the complexity of pollution, caused by health the features such as serious threat
So that atmosphere pollution（Especially PM2.5Pollution）Problem is especially prominent in various environmental problems.
Urbanization in China constantly expands with commercial scale, and vehicle guaranteeding organic quantity increases very fast, tail gas pollution of motor-driven vehicle
Problem is also more and more prominent, and the atmosphere pollution of urban is also converted from coal smoke type to photochemical fog type.Photochemical fog
It is the oxynitrides in air to primarily form mechanism（NOx：NO、NO2）And volatile organic compounds（VOCs）Deng primary pollution
Thing, reacts under solar ultraviolet irradiation by a series of photochemical reactions and ozonisationization, generation ozone, Peracetic acid nitre
The secondary pollutions such as acid esters, aldoketones.Early in the forties in last century, U.S. Lip river China fir sound of a bird chirping, Tokyo and Australia etc. are all
Photochemical fog occurred.
Atmospheric photochemical reaction is O3Pollution and secondary particulate（SOA）Main source, SOA is molten compared to once gas
Glue toxicity is stronger, either all has the harmfulness of bigger to the ecosystem or human health.VOCs is as photochemical reaction
Primary Actor, there is active chemical reactivity, be oxidizing capacity enhancing equivalent to the fuel of atmospheric oxidn process
Key factor, can not only participate in photochemical reaction generation O3And Peroxyacetyl nitrate（PAN）The pollution very strong etc. oxidisability
Thing, it is also possible to trigger photochemical fog, cause more serious harm.Correlative study the result shows that, the volatilization discharged into the atmosphere
Property organic compound (VOCs), including various alkane, alkene, fragrant hydrocarbons and their derivates, with the nitrogen oxides (NO in environmentx),
React under ultraviolet irradiation, the probability for forming photochemical fog constantly increases.Photochemical pollution goes out in various regions
Existing frequency is higher and higher, and the annual exceeded number of days of ozone is in rising trend.Have been reported and show, the part such as China northeast, North China
Area is when the autumn and winter are alternately, in PM2.5For in the serious haze weather of major pollutants, often with photochemical pollution
The generation of phenomenon.
Therefore, carry out the research of the associated analogs such as the photochemical reaction of atmosphere organic pollutant, study volatile organic compound
The reaction of nitrogen oxides in thing (VOCs) and air, inquires into photochemical fog formation mechenism, has important theoretical and actual
Meaning.
The content of the invention
Photochemically reactive analysis method, this method are occurred to atmosphere organic pollutant the object of the present invention is to provide a kind of
The reaction of the specific organic pollution and air nitrogen oxides in controlled condition Imitating air is realized, so as to find processing
The method of pollution finds path.
The purpose of the present invention is what is be achieved through the following technical solutions：
It is a kind of that photochemically reactive analysis method is occurred to atmosphere organic pollutant, include the following steps：
1. will occur first in simulated atmosphere photochemically reactive experimental provision it is closed after, connect and open vacuum pump operation 5-10
Minute, the gas in withdrawing device；Bleeding point valve is closed, high pure nitrogen is then passed to and carries out purging 5-10 minutes, treat device
Interior pressure closes gas inlet valves after being higher than external pressure, and such iterative cycles 2 ~ 3 times, treat last time vacuum pump operation
Finish, close bleeding point valve；
2. the ultraviolet lamp in unlatching reaction unit 20 ~ 30 minutes, after the organic pollution exhaustive oxidation in babinet, again by
Pumping-high pure nitrogen purge purifies reaction babinet again；
3. opening reaction gas inlet valve, a certain concentration and the organic pollution of species are passed through；It is passed through newly-generated NO2Gas
Body, after gas pressure is slightly above external pressure in device, closes reaction gas inlet valve；
4. powering on, the ultraviolet lamp in reaction chamber body is opened, starts photochemical reaction（5 ~ 10 it is small when）, it is every to start every other hour
Sample is gathered, organic pollution in sample is divided using instrument and equipments such as gas chromatograph, gas chromatograph-mass spectrometer (GC-MS)s
Analysis test, utilizes the ozone content in ozone analyzer determination sample；
5. by the situation of change and generation product of specific organic pollution in qualitative and quantitative analysis reacting gas, determine
The possible mechanism of organic pollutants photochemical reaction and the path for forming photochemical fog；
So as to targetedly carry out photochemical reaction processing to pollution by path.
Advantages of the present invention is with effect：
The photochemical reaction that the present invention can be occurred in the specific organic pollution in controlled condition Imitating air, method are real
Apply simply, it is workable.The correlative simulation methods such as the photochemical reaction of atmosphere organic pollutant are realized, analyze volatility
The reaction of organic compound (VOCs) and the nitrogen oxides in air, i.e. photochemical fog formation mechenism, find processing pollution
Path, has important theoretical and practical significance.
Embodiment
With reference to embodiment, the present invention is described in detail.
Embodiment：1
To occur first in simulated atmosphere photochemically reactive experimental provision all carry out it is closed after, connect and open vacuum pump fortune
Row 10 minutes, the gas in withdrawing device；Bleeding point valve is closed, high pure nitrogen is then passed to and carries out purging 10 minutes, it is to be installed
Pressure in putting closes gas inlet valves after being higher than external pressure.Above procedure iterative cycles 3 times, treat last time vacuum pump
Operation finishes, and closes bleeding point valve.Ultraviolet lamp in unlatching reaction unit 30 minutes, will be remaining micro organic in babinet
Pollutant exhaustive oxidation, purifies reaction babinet again by pumping-high pure nitrogen purge again.Open reacting gas
Inlet valve, note toluene, dimethylbenzene, is passed through newly-generated NO2Gas, treats that the gas pressure in device is slightly above external pressure
Afterwards, reaction gas inlet valve is closed.Power on, open the ultraviolet lamp in reaction chamber body, start photochemical reaction, during reaction
Between for 10 it is small when, per start every other hour gather sample, using gas chromatograph, gas chromatograph-mass spectrometer (GC-MS) in sample
Organic matter is tested, and utilizes the ozone content in ozone analyzer determination sample.By analyzing toluene in reacting gas, diformazan
The situation of change and generation product of benzene, infer toluene, the possible mechanism of dimethylbenzene photochemical reaction with forming photochemical fog
Possibility.
Embodiment：2
To occur first in simulated atmosphere photochemically reactive experimental provision all carry out it is closed after, connect and open vacuum pump fortune
Row 10 minutes, the gas in withdrawing device；Bleeding point valve is closed, high pure nitrogen is then passed to and carries out purging 8 minutes, treat device
Interior pressure closes gas inlet valves after being higher than external pressure.Above procedure iterative cycles 3 times, treat that last time vacuum pump is transported
Row finishes, and closes bleeding point valve.Ultraviolet lamp in unlatching reaction unit 20 minutes, by remaining micro organic dirt in babinet
Thing exhaustive oxidation is contaminated, reaction babinet is purified again again by pumping-high pure nitrogen purge.Reacting gas is opened to enter
Mouth valve, notes propane, is passed through newly-generated NO2Gas, after the gas pressure in device is slightly above external pressure, is closed anti-
Answer gas inlet valves.Power on, open the ultraviolet lamp in reaction chamber body, start photochemical reaction, the reaction time is small for 10
When, per collection sample is started every other hour, using gas chromatograph, gas chromatograph-mass spectrometer (GC-MS) to organic contamination in sample
Thing is tested, and utilizes the ozone content in ozone analyzer determination sample.By the change feelings for analyzing propane in reacting gas
Condition and the secondary particulate product of generation, the announcement possible mechanism of propane photochemical reaction can with formation photochemical fog
Energy.
Embodiment：3
To occur first in simulated atmosphere photochemically reactive experimental provision all carry out it is closed after, connect and open vacuum pump fortune
Row 8 minutes, the gas in withdrawing device；Bleeding point valve is closed, high pure nitrogen is then passed to and carries out purging 8 minutes, treat device
Interior pressure closes gas inlet valves after being higher than external pressure.Above procedure iterative cycles 3 times, treat that last time vacuum pump is transported
Row finishes, and closes bleeding point valve.Ultraviolet lamp in unlatching reaction unit 30 minutes, by remaining micro organic dirt in babinet
Thing exhaustive oxidation is contaminated, reaction babinet is purified again again by pumping-high pure nitrogen purge.Reacting gas is opened to enter
Mouth valve, injects propylene and newly-generated NO2Gas, after the gas pressure in device is slightly above external pressure, is closed anti-
Answer gas inlet valves.Power on, open the ultraviolet lamp in reaction chamber body, start photochemical reaction, the reaction time is small for 8
When, per collection sample is started every other hour, using gas chromatograph, gas chromatograph-mass spectrometer (GC-MS) to organic contamination in sample
Thing is tested, and utilizes the ozone content in ozone analyzer determination sample.By the change feelings for analyzing propylene in reacting gas
Condition and generation product, the deduction propylene photochemical reaction generation possible product of secondary particulate can with formation photochemical fog
Energy.
Claims (1)
1. a kind of occur photochemically reactive analysis method to atmosphere organic pollutant, it is characterised in that the described method includes with
Lower process：
1）To occur first in simulated atmosphere photochemically reactive experimental provision it is closed after, connect and open vacuum pump operation 5-
10 minutes, the gas in withdrawing device；Bleeding point valve is closed, high pure nitrogen is then passed to and carries out purging 5-10 minutes, it is to be installed
Pressure in putting, which is higher than after external pressure, closes gas inlet valves, and such iterative cycles 2 ~ 3 times, treat that last time vacuum pump is transported
Row finishes, and closes bleeding point valve；
2）Ultraviolet lamp in unlatching reaction unit 20 ~ 30 minutes, after the organic pollution exhaustive oxidation in babinet, leads to again
Pumping-high pure nitrogen purge is crossed to purify reaction babinet again；
3）Reaction gas inlet valve is opened, is passed through a certain concentration and the organic pollution of species；It is passed through newly-generated NO2Gas
Body, after gas pressure is slightly above external pressure in device, closes reaction gas inlet valve；
4）Power on, open the ultraviolet lamp in reaction chamber body, it is every to start every other hour when beginning photochemical reaction 5 ~ 10 is small
Sample is gathered, organic pollution in sample is divided using instrument and equipments such as gas chromatograph, gas chromatograph-mass spectrometer (GC-MS)s
Analysis test, utilizes the ozone content in ozone analyzer determination sample；
5）By the situation of change and generation product of specific organic pollution in qualitative and quantitative analysis reacting gas, determine
The possible mechanism of organic pollution photochemical reaction and the path for forming photochemical fog.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711171827.9A CN108008070A (en) | 2017-11-22 | 2017-11-22 | It is a kind of that photochemically reactive analysis method is occurred to atmosphere organic pollutant |
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| CN201711171827.9A CN108008070A (en) | 2017-11-22 | 2017-11-22 | It is a kind of that photochemically reactive analysis method is occurred to atmosphere organic pollutant |
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| CN108008070A true CN108008070A (en) | 2018-05-08 |
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| CN201711171827.9A Withdrawn CN108008070A (en) | 2017-11-22 | 2017-11-22 | It is a kind of that photochemically reactive analysis method is occurred to atmosphere organic pollutant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108877370A (en) * | 2018-06-28 | 2018-11-23 | 西安建筑科技大学 | A kind of teaching and experiment method of Atmospheric Photochemical Smog pollution |
| CN109754692A (en) * | 2019-03-11 | 2019-05-14 | 北京大学 | One kind being used for the photochemically reactive device of simulated atmosphere pollutant |
| CN113899846A (en) * | 2021-09-13 | 2022-01-07 | 四川大学 | Ambient air O3Device and method for measuring potential generation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108877370A (en) * | 2018-06-28 | 2018-11-23 | 西安建筑科技大学 | A kind of teaching and experiment method of Atmospheric Photochemical Smog pollution |
| CN109754692A (en) * | 2019-03-11 | 2019-05-14 | 北京大学 | One kind being used for the photochemically reactive device of simulated atmosphere pollutant |
| CN113899846A (en) * | 2021-09-13 | 2022-01-07 | 四川大学 | Ambient air O3Device and method for measuring potential generation |
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