| Based on the data from 72 state controlled points and 185 grid monitoring points in Jiangsu Province, the air pollution hotspots of ozone and PM2.5 in summer and autumn were analyzed by GIS spatial analysis technology. The results showed that the overlapping area of high value hotspots of ozone and PM2.5 in summer and autumn were mainly distributed in Xuzhou, Suqian, the junction of Zhenjiang, Yangzhou, Taizhou, Nantong, and southern Suzhou. Combined with the emission inventory of pollution sources in the province, among the pollution sources in hotspots overlapping areas, the top three annual average emissions of VOCs per unit area were from industrial sources ［219.84 t/(km2·a)］, solvent use ［87.13 t/(km2·a)］ and domestic pollution ［47.77 t/(km2·a)］, the top three emissions of PM2.5 per unit area were from power plants ［129.79 t/(km2·a)］, industrial sources［39.67 t/(km2·a)］ and dust sources ［29.20 t/(km2·a)］. Industrial sources and solvent use contributed 73% of VOCs emissions, industrial sources and power plants contributed 77% of PM2.5 emissions. In order to effectively promote the collaborative prevention and control of ozone and PM2.5 in Jiangsu Province, it was necessary to focus on strengthening the management and control of industrial sources, solvent use, power plants, domestic pollution and fugitive dust. |
