Atmospheric particulate real-time source analytic method based on single-particle mass spectrums

Abstract

The invention relates to an atmospheric particulate real-time source analytic method based on single-particle mass spectrums. The method comprises the steps that target atmospheric particulates are measured by on-line measurement and off-line measurement methods, and particulate on-line ingredient data, single-particle on-line mass spectrum data and sub particle diameter particulate off-line ingredient data are obtained; a software package is used for obtaining single-particle mass spectrum data with multiple time resolutions after the quantification; a classification method and a model are respectively utilized for obtaining particulate type libraries and concentration matrixes based on the classification method and the model; the particulate type library and the concentration matrix based on the model are utilized for carrying out comparison verification on the particulate type library and the concentration matrix based on the classification method, and the particulate type library and the particulate time concentration matrix based on an optimal classification method are obtained; the particulate type libraries and the particulate time concentration matrixes based on the model and based on the optimal classification method are subjected to optimized combination, and optimized particulate source analytic results are obtained. The atmospheric particulate real-time source analytic method can be widely applied to atmospheric particulate pollution control.

Description

technical field [0001] The invention relates to a real-time source apportionment method for atmospheric particles, in particular to a real-time source apportionment method for atmospheric particles based on single-particle mass spectrometry. Background technique [0002] The increase of particulate matter concentration is the main internal factor of pollution processes such as haze. Under unfavorable meteorological conditions, PM 2.5 my country's regional heavy haze, represented by pollution, can last for as long as 5 to 10 days. 2.5 It can exceed the WHO (World Health Organization) guidance value by several times to ten times, and the continuous heavy pollution process has also become a major threat to urban ambient air quality, atmospheric visibility and residents' health. In particular, the continuous heavy pollution incident in January 2013 was the first serious pollution process experienced by my country after the implementation of the new "Ambient Air Quality Standard...

AI Technical Summary

Problems solved by technology

However, since AMS can only measure the limited chemical composition of the concentrated particles during the measurement process, and cannot accurately determine the specific components of the particles (such as single organic particle components and refractory components), it is difficult to obtain sufficient components accurately by this method The data (such as elemental composition, etc.) greatly limit the accuracy of source analysis, and the analysis results cannot reflect the accurate source of atmospheric particulate matter

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