Composition Characteristics and Source Analysis of Atmospheric Particulate Matter PM2.5 in Yunyan District,Guiyang City
According to the sampling and analysis of the composition characteristics of atmospheric particulate matter in Yunyan District of Guiyang City during March 2024,the results show that the composition proportion of PM2.5 in Yunyan District is water-soluble ions,carbon components and inorganic elements from the largest to the smallest,among which OC is the largest carbon component,and the low concentration of particulate matter is mainly affected by biomass combustion.At higher levels,it is mainly affected by coal burning or motor vehicle exhaust.The proportion of SO2-4,NO-3 and NH+4 in water-soluble ions is relatively large,and the influence of fixed source is greater than that of mobile source during sampling.The largest proportion of inorganic elements is Al,and the concentration of Fe increases significantly under the influence of industrial source transmission.In the future,it is necessary to formulate a detailed pollution source control list,strengthen the supervision of fixed sources,and promote the adjustment of the energy structure.At the same time,a fine control mechanism for air pollution sources should be established to strengthen the analysis of PM2.5 components and sources.
PM2.5component characteristicssource analysisGuiyang City
万方数据
