VOCs source analysis method based on chemical dynamics-receptor model fusion technology

Abstract

A VOCs source analysis method based on a chemical kinetic receptor model fusion technology relates to the field of atmospheric volatile organic compounds, and comprises the following steps: (1) preprocessing and inputting online data; (2) calculating chemical kinetic parameters; (3) calculating the concentrations of initial VOCs and consumed VOCs discharged by the source; (4) performing PMF/ME2 model parameter setting, including basic setting and source spectrum characteristic constraint; (5) performing PTTPMF model parameter setting, including basic setting and actual measurement source component spectrum setting; and (6) calculating source contribution: using a PMF/ME2 model and a PTTPMF model, and mutually verifying results of the two models. The chemical kinetic receptor model fusion source analysis technology provided by the invention can realize automation of VOCs initial concentration conversion in the calculation process of the factor analysis model, can also make up for the situation of VOCs source component spectrum loss, improves the accuracy of model calculation, realizes automatic calculation of the factor analysis model, and has very good popularization and application prospects.

Description

technical field [0001] The invention relates to the field of atmospheric volatile organic compounds, in particular to a chemical kinetics-receptor model fusion source analysis technology. Background technique [0002] VOCs are key precursors for the formation of tropospheric ozone. With the acceleration of industrialization and urbanization in our country, the emission of VOCs is increasing day by day, and the problem of VOCs pollution in the atmosphere has become more prominent. VOCs and nitrogen oxides (NO x ) photochemical reaction process will destroy NO, NO 2 with O 3 The basic chemical cycle, resulting in O in the environment 3 In serious cases, photochemical smog will be formed, which will reduce the visibility of the area and cause harm to the human body and the environment. Therefore, a greater understanding of the characteristics of VOC emissions, especially from anthropogenic sources, may help to control China's O 3 Pollution. [0003] VOCs are composed of ...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that in the current online source apportionment technology based on the combination of online monitoring data and receptor model, the source apportionment results that are closer to the emission of pollution sources cannot be obtained through automated methods; On-line monitoring data, combined with kinetic process analysis, automatically calculates the initial VOCs concentration of source emissions, and incorporates the factor analysis model, providing a chemical kinetics-receptor model fusion source analysis technology

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