北京地区大气中可吸入颗粒物的污染现状分析

Analysis of Inhalable Particles Pollution in theAtmosphere in Beijing Area

利用2002年7月—2003年6月可吸入颗粒物(PM10)20余站点的监测资料,分析获得了北京地区PM10的浓度水平和地域分布特征。分析表明:远郊区县城关镇与市区污染水平相当;西南部和南部较其他地区污染严重;北京地区背景浓度很高,是国家标准年浓度限值的75%。这一分析结果可为颗粒物污染的进一步研究提供基础信息和建议。

By analyzing the PM_(10) monitoring data from July 2002 to June 2003 of over 20 sites,the average concentration level as well as the regional distribution features of PM_(10) in Beijing was obtained.It was shown that the pollution in satellite towns of suburb districts ties that in urban area,that the air in southwest and south regions is more polluted,and that the background concentration of the whole Beijing area is relatively high,having reached 75% of the national standard for annual concentration limit.The analysis results could provide basic information and suggestion for further study on particles in the atmosphere.