·Shanghai released PM2.5 report: 30% of mobile sources such as motor vehicles

Although it has not been as heavy as the long-term pollution in the winter of 2013, the recent days of Shencheng still appear to be polluted. Yesterday, the Municipal Environmental Protection Bureau announced the latest PM2.5 source analysis results. Shanghai's pollution sources were external and local Sanqi opened. Among local pollution, mobile vehicles, ships and aircraft and other mobile sources contributed the most, accounting for 29.2%.
According to years of monitoring, according to monitoring and analysis, the contribution of local pollution emissions in Shanghai PM2.5 sources is 64%-84%, with an average of 74%, and the impact of foreign regions is 36%-16%, with an average of 26%. Among local sources, fuel emissions from mobile sources such as motor vehicles, ships, and aircraft account for 29.2%, industrial boilers and kilns for non-combustion coals, industrial processes using coal as raw materials, and industrial processes such as petroleum and chemical industries. 28.9%, coal-fired power plants, industrial boilers and kiln coal-fired sources accounted for 13.5%, building construction, road dust and other dust pollution accounted for 13.4%, and other agricultural production, biomass burning, civilian life and Natural sources such as sea salt and plants account for 15%.
The source analysis results have been monitored and analyzed for many years. Fu Qingyan, chief engineer of the Municipal Environmental Monitoring Center, said that Shanghai has been monitoring PM2.5 since 2006. Manual sampling of PM2.5 chemical components began in 2009. In recent years, it has only attempted to analyze the source of PM2.5, 2012-2013. The selection of valid data of more than 50,000 samples at six sampling points in the city during the typical season of the four seasons revealed the chemical composition of Shanghai PM2.5 and its temporal and spatial variation.
Measures such as the elimination of yellow-label vehicles have been effective in 2012, and Shanghai has produced a source analysis result. Compared with the current latest results, the impact of pollution in foreign areas has increased. To this end, improving air quality requires not only local efforts but also regional cooperation. At the same time, the rise of industrial sources, civilian sources of life, agriculture and biomass burning indicates that the governance measures in these areas should be strengthened. In addition, the contribution of mobile sources such as power plants, industrial boilers and kiln, as well as vehicles and ships has declined, indicating that measures such as the replacement of clean energy and the elimination of yellow-label vehicles have produced certain effects.
Before the release of the latest source analysis results in Shanghai, the source analysis results have been published in the Beijing-Tianjin-Hebei region. Compared with cities in these regions, Shanghai has a lower contribution rate of coal combustion and a higher contribution rate of industrial production. The relevant person in charge said that this is related to Shanghai's industrial structure and coal combustion mainly concentrated in the power generation industry.
At present, 52 air quality automatic monitoring stations have been built in the city, and all districts and counties have real-time release of air quality zones, and 119 items listed in the Clean Air Action Plan (2013-2017) formulated by the municipal government to control air pollution. Governance tasks have been completed nearly 30%.

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