2000—2002年沙尘现象对北京大气中PM_(10)质量浓度的影响评估  

Effect of Sand-Dust on the Concentration of Atmospheric PM_(10) in Beijing during 2000 to 2002

作　　者：任晰[1] 胡非[1] 胡欢陵[2] 洪钟祥[1] 佟彦超[3] 程新金[1] 

机构地区：[1]中国科学院大气物理研究所,北京100029 [2]中国科学院安徽光学精密机械研究所,安徽合肥230031 [3]中国环境监测总站,北京100029

出　　处：《环境科学研究》2004年第1期51-55,共5页Research of Environmental Sciences

摘　　要：北京地区大气中污染物粒子PM10主要有3个来源:本地区排放的PM10;北京周边地区排放的PM10经过输送扩散进入北京大气中;沙尘现象污染北京大气,尤其在强沙尘时造成北京大气中主要污染物粒子皆为沙尘粒子。而北京部分地区受沙尘影响时,大气中污染物粒子既包含沙尘粒子也包含排放的污染物粒子。利用北京及周边地区气象台站资料、卫星遥感资料以及环境监测资料,采用月积分浓度和年积分浓度方法,对沙尘粒子与污染物粒子进行了统计对比分析,发现沙尘粒子约占北京PM10的7%～19%。The PM_(10) in the air in Beijing has three main sources, i.e. pollutant emission from native sources, pollutant emission from surrounding areas of Beijing, which was transported and diffused to Beijing, and sand-dust storm from the distant areas. During strong sand-dust storms, in particular, the main pollutant particulates are sand-dust particulates. In part area of Beijing, during the sand-dust storms, both sand-dust particulates and pollutant particulates from native emissions were found in the pollutant particulates. Using the data from the meteorological stations of both Beijing and the surrounding areas, from satellite remote sensing and from environmental monitoring, the concentrations of the two kinds of particulate were distinguished roughly with the concentrations of both the month integration and the year integration and by the statistic analysis of the particulates of both the sand-dust and pollutants. It was found that the particulates of sand-dust was about 7%～19% of the PM_(10).

关 键 词：污染物粒子 沙尘粒子 沙尘天气 月积分浓度 年积分浓度 

分 类 号：X831.02[环境科学与工程—环境工程]