PM_(2.5) in China:Measurements,sources,visibility and health effects,and mitigation

查看全文 作　　者：David [1]Y.H.Pui;Sheng-Chieh [1]Chen;Zhili [1]Zuo

机构地区：[1]Department of Mechanical Engineering,College of Science and Engineering,University of Minnesota

出　　处：《Particuology》索引2014年第12卷第2期,共26页

摘　　要：Concern over the health effects of fine particles in the ambient environment led the U.S. Environmental Protection Agency to develop the first standard for PM2.5(particulate matter less than 2.5 jxm) in 1997. The Particle Technology Laboratory at the University of Minnesota has helped to establish the PM2.5 standard by developing many instruments and samplers to perform atmospheric measurements. In this paper, we review various aspects of PM2.5, including its measurement, source apportionment, visibility and health effects, and mitigation. We focus on PM2.5 studies in China and where appropriate, compare them with those obtained in the U.S. Based on accurate PM2.5 sampling, chemical analysis, and source apportionment models, the major PM2.5 sources in China have been identified to be coal combustion, motor vehicle emissions, and industrial sources. Atmospheric visibility has been found to correlate well with PM2.5concentration. Sulfate, ammonium, and nitrate carried by PM2.5, commonly found in coal burning and vehicle emissions, are the dominant contributors to regional haze in China. Short-term exposure to PM2.5 is strongly associated with the increased risk of morbidity and mortality from cardiovascular and respiratory diseases in China. The strategy for PM2.5 mitigation must be based on reducing the pollutants from the two primary sources of coal-fired power plants and vehicle emissions. Although conventional Particulate Emission Control Devices(PECD) such as electrostatic precipitators in Chinese coal-fired power plants are generally effective for large particles, most of them may not have high collection efficiency of PM2.5.Baghouse filtration is gradually incorporated into the PECD to increase the PM2.5 collection efficiency.By adopting stringent vehicle emissions standard such as Euro 5 and 6, the emissions from vehicles can be gradually reduced over the years. An integrative approach, from collaboration among academia,government, and industries, can effectively manage and mitigate the PM2.5 pollution in China. 关键词：大气测量知名度 PM2 5 中国汽车尾气排放标准健康机动车排放燃煤发电厂

相关文献

参考文献（214）
引证文献（190）
耦合文献（441）

参考文献(214)

引证文献(190)

耦合文献(441)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

PM_(2.5) in China:Measurements,sources,visibility and health effects,and mitigation

参考文献(214)

引证文献(190)

耦合文献(441)

用户提示