CN106018195A - Method for estimating concentration of secondary organic carbon in particulate matters in environment air - Google Patents
Method for estimating concentration of secondary organic carbon in particulate matters in environment air Download PDFInfo
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- CN106018195A CN106018195A CN201610342877.8A CN201610342877A CN106018195A CN 106018195 A CN106018195 A CN 106018195A CN 201610342877 A CN201610342877 A CN 201610342877A CN 106018195 A CN106018195 A CN 106018195A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 42
- 229910001410 inorganic ion Inorganic materials 0.000 claims abstract description 21
- 238000011160 research Methods 0.000 claims description 13
- 230000001932 seasonal effect Effects 0.000 claims description 12
- 239000010419 fine particle Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 abstract description 13
- 239000013618 particulate matter Substances 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 229910002651 NO3 Inorganic materials 0.000 description 36
- 239000003570 air Substances 0.000 description 36
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 35
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 31
- 238000005070 sampling Methods 0.000 description 14
- 239000000523 sample Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000000443 aerosol Substances 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000012080 ambient air Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000001028 reflection method Methods 0.000 description 4
- 238000013178 mathematical model Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000002512 chemotherapy Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- -1 n-alkane Chemical class 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 150000001728 carbonyl compounds Chemical class 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010219 correlation analysis Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000010998 test method Methods 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
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention provides a method for estimating the concentration of secondary organic carbon (SOC) in particulate matters in environment air. The method comprises the following steps: firstly, determining the concentrations of SO4<2->, NO3<->, NH4<+>, organic carbon and element carbon in PM2.5 (Particulate Matter 2.5) in the environment air; calculating by utilizing the concentrations of the organic carbon and the element carbon to obtain the concentration of the secondary organic carbon in the PM2.5; establishing a regression model for describing a mutual relation of the SO4<2->, the NO3<->, the NH4<+> and the secondary organic carbon; finally, estimating the concentration of the secondary organic carbon by applying the model through the concentrations of the SO4<2->, the NO3<-> and the NH4<+> in the PM2.5. The concentration of the secondary organic carbon is estimated by utilizing the correlation between secondary pollutants in the PM2.5 and the problem of how to obtain the concentration of the SOC through directly determining the concentration of secondary inorganic ions in the PM2.5 in the environment air is solved, so that a theoretical foundation is provided for source analysis and environment behavior of the secondary organic carbon.
Description
Technical field
The present invention relates to a kind of estimate the method for Secondary Organic concentration of carbon in surrounding air fine particle, especially by building
Inorganic ions and secondary in the regression model estimation surrounding air fine particle of secondary organic carbon concentration relationship in vertical fine particle
The method of organic carbon concentration.
Technical background
The aerodynamic diameter fine particle less than 2.5 microns claims PM2.5, PM2.5Main component be secondary organic carbon
(SOC), secondary organic carbon (SOC) by the precursor such as volatile organic matter or semi-volatile organic matter by gas-solid convert, condensation,
Absorption and photochemical reaction etc. generate indirectly, have a major impact health, visibility, weather etc..SOC composition includes multi-ring
Aromatic hydrocarbons, n-alkane, organic acid, carbonyl compound etc., some of which material has strong carcinogenecity.For preferably research environment
Air fine particles PM2.5Source and harm, the most primary concentration determining that SOC.Currently mainly utilize " organic carbon (OC)/
Elemental carbon (EC) " ratio method, chemotherapy synergism iterative method, radioactive carbon (14C) analyze and aerosol mass spectrometer is estimated
The concentration of SOC.The concentration of many research applications " OC/ EC " ratio method estimation SOC, but " OC/ EC " minima is more difficult determines,
Collecting test a large amount of PM is needed during estimation SOC concentration2.5Sample.Pertinent literature reports SOC at PM2.5In occupy larger proportion,
Surrounding air PM2.5In do not contain only SOC this kind of Secondary Organic pollutant, there is also a large amount of secondary formed sulfate ion
(SO4 2-), nitrate ion (NO3 -), ammonium radical ion (NH4 +), various pollutant amalgamations enhance PM2.5Poison to human body
Evil effect.
In ambient air particulate matter, particle diameter distribution, spatial distribution and the seasonal variations etc. of inorganic ions and carbon component are subject to always
To the attention of people, and become the focus of research both at home and abroad.Beijing Che Gongzhuan and Tsing-Hua University campus PM2.5Middle carbonaceous component accounts for respectively
45% and 48%, SO4 2-、NO3 -、NH4 +It is three kinds of most important ions, accounts for the 37% of Inorganic water-soluble mass of ion respectively, 23% and
20%；Organic substance, SO near Northern Switzerland and the northwestern city of, in urban background point, rural environment air4 2-、NO3 -It is PM2.5
And PM10Significant contributor, and be primarily present in PM2.5In, the other organic substance of urban road and EC are PM2.5And PM10Main
Contributor.NO in urban environment air particle3 -、SO4 2-All there is obvious diurnal and seasonal variation.Surrounding air NO3 -'s
Gas-solid distribution apparently depends on the meteorological condition such as temperature and relative humidity, and the seasonal variations of meteorological condition causes PM2.5Middle NO3 -Send out
Raw large change, summer NO3 -Concentration be substantially less than winter；Low temperature is for secondary SO4 2-Formation do not play an important role, and not
It is beneficial to SO4 2-Formation, Autumn of Beijing and SO in summer4 2-Concentration is higher than concentration in winter by 45%；Night is due to NH4NO3Stability and
N2O5Hydrolysis, NO in your city's ambient air particulate matter of India Kemp3 -Increase by 500, daytime SO4 2-Significantly increase 20%.
In ambient air particulate matter the dependency of different component be particulate matter origin analysis, secondary pollution environmental behaviour and
Forming Mechanism provides important information.Smog box experimentation shows NOx、SO2Existence affect the productivity of SOC.Beijing environment
Air PM2.5Middle NO3 -、SO4 2-With NH4 +Between all notable linear correlation, correlation coefficientr 2 It is respectively 0.85 and 0.86, NH4NO3
(NH4)2SO4It is PM2.5In important component.Ram etc. find India Kemp that city surrounding air PM2.5Middle EC-OC, OC-K+All
There is significant correlation, show that biomass combustion is the primary discharge source in your city of Kemp.In Pittsburgh's surrounding air fine particle
The diurnal variation of Organic aerosol (POA) is notable, reaches peak value congested in traffic morning, and secondary organic aerosol (SOA)
Diurnal Variation is relatively steady, and and SO4 2-And NH4 +Change similar, further study show that SOA and SO4 2-Significant correlation (r 2 =0.74), thus SO4 2-Compare O3It is more suitable for the reliable prediction index of SOA concentration.Zhang etc. also find that the particle diameter of POA is in liking root
Core modal distribution, and SOA concentrates on accumulation mode, the particle diameter at whole research process SOA is distributed and SO4 2-、NH4 +Behavior one
Cause, SOA and NH is described4 +、NO3 -、SO4 2-The most similar, there is inherence mixing between them.This shows NH4 +、NO3 -、SO4 2-With
There is certain relation between SOA, therefore can utilize surrounding air PM2.5Quantitative relationship estimation SOC between middle secondary pollution
Concentration and environmental behaviour thereof.Yet there are no and be related to PM2.5Between middle secondary pollution, the document report of relational model, more has no
There is the report using causes estimation SOC concentration.
Summary of the invention
How the concrete technical problems that the invention solves the problems that is by directly measuring surrounding air PM2.5Middle secondary inorganic from
Sub-concentration obtains the problem of SOC concentration, thus provides a kind of method estimating surrounding air fine particle Secondary Organic concentration of carbon.
In order to solve the problems referred to above, the present invention first test environment air PM2.5Middle NH4 +、NO3 -、SO4 2-, OC, EC dense
Degree, then sets up sign NH4 +、NO3 -、SO4 2-, the mathematical model of SOC concentration relationship, finally use this model to pass through PM2.5Middle NH4 +、NO3 -、SO4 2-The concentration of concentration estimation SOC.
The present invention is based on above-mentioned thinking, at PM2.5Middle NH4 +、NO3 -、SO4 2-, on the basis of SOC correlation research, further
One estimation surrounding air PM is provided2.5The method of middle SOC concentration, the concrete steps of the method carry out as follows:
(1) types of functionality district Various Seasonal surrounding air PM is gathered respectively2.5Sample；
(2) PM is measured2.5Middle SO4 2-、NO3 -、NH4 +, organic carbon and the concentration of elemental carbon；
(3) measurement result in above-mentioned steps (2), application " organic carbon/elemental carbon " ratio method is utilized to determine PM2.5Middle secondary has
The concentration of machine carbon；
(4) to types of functionality district Various Seasonal PM2.5Middle SO4 2-、NO3 -And NH4 +Carry out dependency with secondary organic carbon respectively to grind
Study carefully；
(5) description SO is set up4 2-、NO3 -And NH4 +Regression model with secondary organic carbon mutual relation；
(6) PM is utilized2.5Middle SO4 2-、NO3 -And NH4 +Concentration, the concentration of application regression model estimation secondary organic carbon.At above-mentioned
In the technical scheme of invention, utilize OC, EC concentration value measured, use " OC/EC " ratio method to calculate the concentration of SOC, for building
Vertical inorganic ions and SOC concentration relationship model provide basic data；Wherein, described " OC/EC " ratio method and sign secondary are dirty
The mathematical model of dye thing relation refers to below equation:
(1)
(2)
In formula:C SOC 、C TOC 、C OC 、C EC Represent surrounding air PM respectively2.5Middle SOC, total organic carbon (TOC), OC, EC
Mass concentration, g m-3；
(C OC / C EC ) min Surrounding air PM2.5The minima of middle OC, EC mass concentration ratio；
Represent surrounding air PM respectively2.5Middle NH4 +、NO3 -、SO4 2-Mass concentration, g m-3；
K 1 、K 2 、K 3 、K 4 The coefficient determined by SPSS software regression model, this coefficient is to utilize types of functionality district difference season
This region of sign NH that joint secondary inorganic ions and Secondary Organic concentration of carbon determine4 +、NO3 -And SO4 2-Overall with secondary organic carbon
The coefficient of relation regression model；
A 1 、A 2 、A 3 、A 4 The factor that model is modified by the impact in types of functionality district；
B 1 、B 2 、B 3 、B 4 Four season meteorological condition, the impact factor that model is modified of polluter change.
The above-mentioned a kind of estimation surrounding air PM of the present invention2.5The method of middle SOC concentration, compared with prior art, it highlights
Feature and marked improvement be: propose a kind of new estimation surrounding air PM2.5The method of middle Secondary Organic concentration of carbon, for
PM2.5Origin analysis and environmental behaviour provide theoretical basis；Establish sign PM2.5The recurrence of relation between middle secondary pollution
Model, indicates the dependency between inorganic ions and SOC, utilizes the concentration of inorganic ion concentration estimation SOC, fills up current state
The research on border is blank；Regression model is corrected by the impact correction factor in types of functionality district, Various Seasonal meteorological factor,
This model is made to have wider application；By PM2.5Middle secondary pollution correlation research is applied to estimate SOC concentration, for environment
The research of scientific domain secondary pollution opens new approaches.
The present invention estimates surrounding air PM2.5The method of middle SOC concentration, described NH4 +、NO3 -、SO4 2-Dense with OC, EC
Degree is tested with ion chromatograph and hot reflection method respectively, and means of testing is reliable and stable, it is ensured that relevant between secondary pollution
The accuracy of Journal of Sex Research.
Accompanying drawing explanation
Fig. 1 is the implementation route schematic diagram of the inventive method.
Fig. 2 is quartz filter sample treatment programme diagram of the present invention.
Detailed description of the invention
The present invention is with Taiyuan City surrounding air PM2.5As a example by the estimation analysis of middle SOC concentration, in conjunction with accompanying drawing, by embodiment to this
Bright detailed description of the invention is further detailed, and is capable of being as the criterion with person of ordinary skill in the field.This
Embodiment is detailed description of the invention, and the present invention does not make any restriction.
Implement a kind of estimation surrounding air PM provided by the present invention2.5The method of middle SOC concentration, the method specifically includes
Following steps:
The first, gathering sample, sampling optimization is environmental air quality monitoring point position, Taiyuan City, is positioned at types of functionality district, i.e. industry
The regions such as district, residential block, areal of traffic concentration, shopping centre；Sampling period be four seasons non-sleet strong wind sky；Number of samples with
Correlation analysis sample number can be met and Taiyuan City's ambient air quality can be represented be limited；Sampling time can be according to local air
The sampling efficiency of cleannes, inorganic ions used and the detection limit of concentration of carbon method of testing and instrument determine, with energy
The requirement enough meeting component analysis is principle.Sampling, other require all by country's sampling enforcement of regulations.
Surrounding air PM2.5Gather: the sampling in the most continuous 7 days respectively of four seasons, Qingdao Laoshan selected by sampling apparatus
Traffic sampling device in the KB120 type that instrument institute produces, incising control is 2.5 microns.Environment is gathered with quartz fibre filter membrane
Air PM2.5Sample, in order to avoid the impact of residual carbon and other impurity in filter membrane, by filter membrane in Muffle furnace 450 DEG C before sampling
Calcination 4.5 hours.
The second, the surrounding air PM that will gather2.5After sample is all processed by certain procedures, see accompanying drawing 2, utilize Switzerland
Ten thousand lead to 861 couples of Suppressed ion chromatography instrument test analysis NH4 +、NO3 -、SO4 2-Concentration, utilizes the hot light carbon that U.S. desert is developed
Analyser, uses hot reflection method to carry out the concentration determination analysis of OC, EC.
Above-mentioned steps intermediate ion chromatograph method of the present invention and hot reflection method are current widely used inorganic ions, carbon
The assay method of component, its analysis method is prior art, and ripe, analysis result has good reproducibility.
3rd, utilize OC, EC concentration of test gained, use " OC/EC " minimum ratio method to calculate PM2.5Middle SOC's is dense
Degree.
Mathematical model in above-mentioned steps of the present invention is as follows:
(1)
In formula:C SOC 、C TOC 、C OC 、C EC Represent surrounding air PM respectively2.5The mass concentration of middle SOC, TOC, OC, EC, g m-3；(C OC /C EC ) min For surrounding air PM2.5The minima of middle OC, EC mass concentration ratio.
" OC/EC " minimum ratio method is to estimate the common method of SOC concentration at present, and the determination of " OC/EC " minima is to meter
Calculate result and have considerable influence, the present invention is all worth to " OC/EC " minima by multiple samples of different sampling stages, subtracts
Little sampling and the error of the process of analysis.Above-mentioned steps of the present invention method particularly includes: owing to the emission source of OC, EC is different, four
Individual season " OC/EC " minima is different, to sampling in the most continuous 7 days respectively in spring, takes wherein PM2.5OC and EC concentration in sample
The meansigma methods of 3 days samples that ratio is minimum is " OC/EC " minima, in like manner obtains " OC/EC " minima in other three seasons.
For PM2.5Middle secondary pollution correlation research provides infallible data.
4th, utilize SPSS software to SO4 2-、NO3 -、NH4 +Inorganic ions and SOC carry out correlation research, find and SOC
The inorganic ions of significant correlation.
Smog box experimentation shows NOx、SO2Existence affect the productivity of secondary organic aerosol, spot sampling analysis is sent out
Existing surrounding air PM2.5Middle SO4 2-、NO3 -With NH4 +Between notable linear correlation, in particulate matter, the particle diameter of secondary organic aerosol divides
Cloth and SO4 2-、NH4 +Behavior consistent, there is inherence between secondary organic aerosol with inorganic ions and mix.Based on this, the present invention
Analyze types of functionality district Various Seasonal PM2.5Middle SO4 2-、NO3 -、NH4 +Inorganic ions and the dependency of SOC, probe into functional areas and season
Joint, on inorganic ions and the impact of SOC dependency, is sought the inorganic ions with SOC concentration significant correlation, for characterizing respectively
SO4 2-、NO3 -、NH4 +Inorganic ions provides support with the foundation of SOC mutual relation model.
5th, description SO is set up4 2-、NO3 -And NH4 +Regression model with SOC overall relation.
Due to PM2.5Middle SOC is more difficult to be separated from OC, therefore cannot directly test the concentration of SOC.Can utilize at present
" OC/EC " minimum ratio method, chemotherapy synergism iterative method, radioactive carbon (14C) method such as analysis, aerosol mass spectrometer
In estimation particulate matter, the concentration of SOC, there are no and utilize PM2.5Mutual relation estimation SOC concentration between middle secondary pollution.This
Bright to Taiyuan City's Various Seasonal PM2.5Middle SOC and SO4 2-、NO3 -、NH4 +On the basis of correlation research, SPSS software is utilized to build
Vertical sign inorganic ions and the regression model of SOC concentration relationship.
(2)
In formula:K 1 、K 2 、K 3 、K 4 Refer to the coefficient determined by SPSS software regression model；Respectively
Represent surrounding air PM2.5Middle NH4 +、NO3 -、SO4 2-Concentration, g m-3。
Process SO set up by model4 2-、NO3 -、NH4 +Concentration utilize ion chromatograph test to obtain, the concentration of SOC utilizes heat
Reflection method tests OC and the EC concentration obtained, and utilizes formula (1) to be calculated in conjunction with " OC/EC " minimum ratio method, uses
SPSS software determines coefficientK 1 、K 2 、K 3 、K 4 。
6th, types of functionality district Various Seasonal surrounding air PM is analyzed2.5Middle SO4 2-、NO3 -And NH4 +Mutual relation, to mould
Type (2) is modified, and be applied widely regression model (3).
(3)
In formula:Represent surrounding air PM respectively2.5Middle SOC, NH4 +、NO3 -、
SO4 2-Mass concentration, g m-3；
K 1 、K 2 、K 3 、K 4 The coefficient determined by SPSS software regression model, this coefficient is to utilize types of functionality district difference season
This region of sign NH that joint secondary inorganic ions and Secondary Organic concentration of carbon determine4 +、NO3 -And SO4 2-Overall with secondary organic carbon
The coefficient of relation regression model；
A 1 、A 2 、A 3 、A 4 The factor that model is modified by the impact in types of functionality district；
B 1 、B 2 、B 3 、B 4 Four season meteorological condition, the impact factor that model is modified of polluter change.
7th, PM is utilized2.5Middle SO4 2-、NO3 -、NH4 +Inorganic ion concentration, the concentration of application model (3) estimation SOC.
Characterize PM2.5Middle SO4 2-、NO3 -、NH4 +After the model of inorganic ions and SOC relation is set up, can be obtained by test
SO4 2-、NO3 -、NH4 +Concentration estimation PM2.5The concentration of middle SOC.Present invention shows that PM2.5Mutual between middle secondary pollution
Relation, for determining that SOC concentration provides a kind of new method, also provides theoretical base for SOC origin analysis and environment and behavior study
Plinth.
Claims (3)
1. the method estimating surrounding air fine particle Secondary Organic concentration of carbon, described fine particle is PM2.5；Described side
Method is first mensuration surrounding air PM2.5Middle SO4 2-、NO3 -、NH4 +, organic carbon and the concentration of elemental carbon, and utilize organic carbon and unit
Element concentration of carbon obtains PM2.5The concentration of middle secondary organic carbon；Then set up description SO4 2-、NO3 -And NH4 +Mutual with secondary organic carbon
The regression model of relation；Finally apply this model assessment PM2.5The concentration of middle secondary organic carbon.
2. the method for claim 1, described method follows these steps to carry out:
(1) types of functionality district Various Seasonal surrounding air PM is gathered respectively2.5Sample；
(2) PM is measured2.5Middle SO4 2-、NO3 -、NH4 +, organic carbon and the concentration of elemental carbon；
(3) measurement result in above-mentioned steps (2), application " organic carbon/elemental carbon " ratio method is utilized to determine PM2.5Middle secondary has
The concentration of machine carbon；
(4) to types of functionality district Various Seasonal PM2.5Middle SO4 2-、NO3 -And NH4 +Correlation research is carried out respectively with secondary organic carbon；
(5) description SO is set up4 2-、NO3 -And NH4 +Regression model with secondary organic carbon mutual relation；
(6) PM is utilized2.5Middle SO4 2-、NO3 -And NH4 +Concentration, the concentration of application regression model estimation secondary organic carbon.
3. method as claimed in claim 1 or 2, described SO4 2-、NO3 -And NH4 +Recurrence mould with secondary organic carbon mutual relation
Type is expressed as:
In formula:Represent surrounding air PM respectively2.5Middle secondary organic carbon, NH4 +、NO3 -、
SO4 2-Mass concentration, g m-3；
K 1 、K 2 、K 3 、K 4 The coefficient determined by SPSS software regression model, this coefficient is to utilize types of functionality district Various Seasonal
This region of sign NH that secondary inorganic ions and Secondary Organic concentration of carbon determine4 +、NO3 -And SO4 2-Totally close with secondary organic carbon
It it is the coefficient of regression model；
A 1 、A 2 、A 3 、A 4 The factor that model is modified by the impact in types of functionality district；
B 1 、B 2 、B 3 、B 4 Four season meteorological condition, the impact factor that model is modified of polluter change.
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Cited By (4)
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| CN107516018A (en) * | 2017-09-06 | 2017-12-26 | 太原理工大学 | A kind of method for estimating coking coke oven top uncontrollable discharge soot particulate matter emission factor |
| CN108693084A (en) * | 2017-04-06 | 2018-10-23 | 富士电机株式会社 | Generating source analytical equipment and generating source analysis system |
| CN111929207A (en) * | 2019-09-05 | 2020-11-13 | 电子科技大学中山学院 | Sampling method and device for atmospheric micro-particles |
| CN112730575A (en) * | 2020-12-18 | 2021-04-30 | 太原理工大学 | PM (particulate matter) capable of analyzing ambient air2.5Method for obtaining primary sulfate |
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| CN108693084A (en) * | 2017-04-06 | 2018-10-23 | 富士电机株式会社 | Generating source analytical equipment and generating source analysis system |
| CN107516018A (en) * | 2017-09-06 | 2017-12-26 | 太原理工大学 | A kind of method for estimating coking coke oven top uncontrollable discharge soot particulate matter emission factor |
| CN111929207A (en) * | 2019-09-05 | 2020-11-13 | 电子科技大学中山学院 | Sampling method and device for atmospheric micro-particles |
| CN112730575A (en) * | 2020-12-18 | 2021-04-30 | 太原理工大学 | PM (particulate matter) capable of analyzing ambient air2.5Method for obtaining primary sulfate |
| CN112730575B (en) * | 2020-12-18 | 2024-04-26 | 太原理工大学 | Resolving ambient air PM2.5Method for obtaining primary sulfate |
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