摘要
碳质气溶胶是大气PM_(2.5)的重要组成成分。为深入了解龙游碳质气溶胶对冬季雾霾污染的影响,于2018年1月11日至2月5日在龙游县的三个站点进行了颗粒物采样研究。着重对样品中的有机碳(OC)和无机碳组分(EC)浓度的变化、OC/EC和OC与EC相关性等进行分析,研究不同污染时期碳质气溶胶的特征。结合后向轨迹方法,重点分析重度雾霾污染时期区域传输对龙游大气颗粒物浓度的影响。结果表明建设大楼和湖镇站点OC浓度主要受机动车排放和化石燃料燃烧影响,夏金站点OC浓度主要受生物质燃烧影响。在重度雾霾污染时期,来自广西东部和浙江省中部地区的气团对龙游PM_(2.5)有一定的影响,其中来自浙江省中部地区的气团对龙游PM_(2.5)贡献更大。
Carbonaceous aerosol is an important composition of atmospheric PM_(2.5)In order to further investigate the effect of carbonaceous aerosol on haze formation during winter in Longyou,aerosol samples were collected at three sites in Longyou from January 11 to February 5,2018.The concentration variations of organic carbon(OC)and elemental carbon(EC),OC/EC and correlation between OC and EC were specifically analysed to investigate the characteristics of carbonaceous aerosol during different haze pollution periods.Combined with backward trajectory,the effects of regional transport on atmospheric aerosol concentration during a severely haze pollution period in Longyou was focused.Results showed that the OC concentrations were mainly affected by vehicle emission and fossil fuel combustion at Jian-she building and Huzhen sites,while biomass burning seemed to affect the OC concentration most at Xiajin site.During the severely haze pollution period,the PM_(2.5) concentration in Longyou were likely affected by air mass from eastern Guangxi province and central Zhenjiang province,Comparatively,the air mass from the central Zhenjiang province has more effect on the formation of PM_(2.5) in Longyou.
作者
刘娟
陈雳华
武燕燕
邓舞艳
LIU Juan;CHEN Li-hua;WU Yan-yan;DENG Wu-yan(Sub-Bureau of Longyou,Quzhou Municipal Bureau of Ecology and Environment,Quzhou 324400,China;College of Energy Engineering,Zhejiang University,Hangzhou 310027,China;不详)
出处
《能源工程》
2021年第3期63-68,共6页
Energy Engineering
基金
龙游县大气颗粒物源解析技术服务项目(K横20181893)。
关键词
细颗粒物
碳质气溶胶
雾霾污染
区域传输
fine particle
carbonaceous aerosol
haze pollution
regional transport
