文献类型：期刊文献

英文题名：Seasonal and long-term trends of sulfate, nitrate, and ammonium in PM(2.5)in Beijing: implication for air pollution control

作者：Han, Xiaokun[1];Guo, Qingjun[2,3];Lang, Yunchao[1];Li, Siliang[1];Li, Ying[4];Guo, Zhaobing[5];Hu, Jian[6];Wei, Rongfei[2];Tian, Liyan[2];Wan, Yingxin[7]

第一作者：Han, Xiaokun

通讯作者：Guo, QJ[1];Guo, QJ[2]

机构：[1]Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China;[2]Chinese Acad Sci, Ctr Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China;[3]Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China;[4]China Earthquake Adm, CEA Key Lab Earthquake Predict Inst Earthquake Fo, Beijing 100036, Peoples R China;[5]Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing 210044, Peoples R China;[6]Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China;[7]Beijing Union Univ, Coll Biochem Engn, Beijing 100191, Peoples R China

第一机构：Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China

通讯机构：[1]corresponding author), Chinese Acad Sci, Ctr Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China;[2]corresponding author), Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China.

年份：2020

卷号：27

期号：19

起止页码：23730-23741

外文期刊名：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000544408800031)】；

基金：This work was funded by the National Key Research and Development Plan (No. 2017YFC0212703) and the National Natural Science Foundation of China (No. 41625006, No. 41761144066, No. 91644104, and No. 41561144005). Acknowledgments

语种：英文

外文关键词：PM2; 5; Water-soluble ions; Air pollution; Beijing; Pollution control

摘要：Particulate matter pollution in Beijing is a serious environmental problem. In response to this, the Beijing government has implemented comprehensive emission reduction measures in recent years. To assess the effectiveness of these measures, the seasonal and long-term trends in chemical compositions of PM(2.5)in Beijing have been studied based on daily samples collected from July 2015 to April 2016 and literature investigation (2000-2014). Results show that the concentrations of sulfate, nitrate, and ammonium in PM(2.5)have significant seasonal variations, which are related to the changes in meteorological conditions and emission intensities. In addition, the long-term data display that the concentrations of sulfate, nitrate, and ammonium have significantly decreased between 2013 and 2016, which are consistent with the reduction in PM(2.5)levels (~ 11.2 mu g/m(3)per year). The declines could not be interpreted by the meteorological factors. It suggests that the air pollution control measures in Beijing (2013-2016), especially the decreasing consumption of coal, can effectively decrease the mass concentration of fine particles. To further improve the air quality, similar measures should be adopted in the areas around Beijing. These air pollution control measures taken in Beijing can provide invaluable guidance for mega-cities in China and other developing countries to decrease their PM(2.5)concentration and reduce health risk from particulate pollution.