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Environmental VOCs source analysis method based on atmospheric diffusion-radiation standardization

A technology of atmospheric diffusion and analysis method, which is applied in the field of source analysis of volatile organic compounds, and can solve problems such as lack

Active Publication Date: 2021-10-29
NANKAI UNIV
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Problems solved by technology

However, there is still a lack of relevant research on this aspect

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  • Environmental VOCs source analysis method based on atmospheric diffusion-radiation standardization
  • Environmental VOCs source analysis method based on atmospheric diffusion-radiation standardization
  • Environmental VOCs source analysis method based on atmospheric diffusion-radiation standardization

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Embodiment 1

[0100] The present invention takes the data of volatile organic compounds observed from November 1, 2019 to March 31, 2020 at the Nankai University Atmospheric Environment Monitoring Super Station in Haihe Education Park, Jinnan District, Tianjin as an example.

[0101] Step 1. Standardize the observed concentration data of VOCs;

[0102] 1. Standardized treatment of atmospheric diffusion factors:

[0103]Obtain the concentration data of volatile organic compounds VOCs at hourly resolution observed by the Nankai University Atmospheric Environment Monitoring Super Station in Haihe Education Park, Jinnan District, Tianjin from November 1, 2019 to March 31, 2020 i , and the mixed layer height data MLH with hourly resolution i and wind speed data u at a height of 10m 10，i And the total solar radiation intensity data TSR i .

[0104] To perform quality control processing on the data, first use the formula (4) or (5) to calculate the ventilation coefficient VC corresponding to e...

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Abstract

The invention provides an environmental VOCs source analysis method based on atmospheric diffusion-radiation standardization, and belongs to the field of volatile organic compound source analysis, and comprises the following steps: 1, standardizing atmospheric diffusion factors: calculating a ventilation coefficient and a ventilation coefficient average value in an observation period to obtain C<vc, i>, which is used for reducing the influence of different diffusion conditions on the VOCs observation concentration; standardizing chemical conversion factors: obtaining C<VCR, i> based on the data of the C<vc, i>, the data of the total solar radiation intensity and the calculation of the average value of the total solar radiation intensity in the observation period, and using the C<VCR, i> to shield the influence caused by chemical conversion; 2,incorporating the C<VCR, i> data into a PMF model for calculation: obtaining the source contribution C<Fn, i'> through direct calculation; 3, calculating the source contribution C<Fn, i'> to obtain a real source contribution C<Fn, i>. The invention has the beneficial effects that the influence caused by atmospheric diffusion and chemical reaction can be shielded, the change of the VOCs emission source is accurately reflected, and a basis is provided for setting source control measures.

Description

technical field [0001] The invention belongs to the field of source analysis of volatile organic compounds, in particular to an environmental VOCs source analysis method based on atmospheric diffusion-radiation standardization. Background technique [0002] Ground-level ozone can have adverse effects on human health, ambient air quality and ecosystems. At the same time, as the main component of photochemical smog, it has attracted more and more attention worldwide. In recent years, the problem of ozone pollution in my country has become increasingly prominent, and ozone has become one of the main pollutants affecting air quality in my country. Volatile organic compounds (VOCs) in the atmosphere are important precursors of ambient ozone and secondary organic aerosols (SOA). Previous studies have shown that strict short-term control measures can significantly reduce VOCs emissions and ambient concentrations, and can effectively reduce ambient ozone concentrations. With the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F17/18
CPCG06F30/20G06F17/18Y02A50/20
Inventor 刘保双顾瑶张裕芬冯银厂
Owner NANKAI UNIV
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