首页 | 本学科首页   官方微博 | 高级检索  
     


Evidence of coal combustion contribution to ambient VOCs during winter in Beijing
Authors:Ming Wang  Min Shao  Si-Hua Lu  Yu-Dong Yang  Wen-Tai Chen
Affiliation:State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
Abstract:Volatile organic compounds(VOCs) play an important role in ozone and secondary organic aerosol(SOA) formation, but VOCs sources during winter are not fully understood. To investigate VOCs sources during winter, mixing ratios of C2-C12 VOCs were measured at an urban site in Beijing from December 29, 2011 to January 17, 2012. Correlation analysis of toluene to benzene and i-pentane to n-pentane suggest that coal combustion could also be an important source for VOCs besides vehicular emissions. Source apportionment results show that coal combustion and vehicular emissions contributed 28%-39% and 31%-45% to ambient VOCs during winter, respectively. Backward trajectory analyses demonstrated that contributions from the burning of coal were higher when air masses came from southern regions outside Beijing. Close attention should be paid to VOCs emissions from coal combustion in Beijing city and the vicinity to the South.
Keywords:VOC  Source apportionment  Coal combustion  Transport
本文献已被 CNKI ScienceDirect 等数据库收录!
点击此处可从《中国化学快报》浏览原始摘要信息
点击此处可从《中国化学快报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号