太原市大气污染现状及监测站点优化

基于2008年12月至2009年11月太原市大气中SO2、NO2和PM10日均浓度值，评价了太原市的大气污染状况，并对监测站点进行了优化设计。结果显示：太原市大气中SO2、NO2和PM10年均浓度分别为0．105mg／m3、9．060mg／m3和0．197mg／m3，接近或超过国家环境空气质量年均值三级标准。受气候和地形的影响，太原市大气中SO2、N02和PM10呈现明显的季节变化和地域分布特征了利用物元分析法对原有的监测站点进行了优化后显示，现有的8个监测站点优化为5个后，仍能准确的反应太原市的大气污染状况。

Status of Atmospheric Pollution and Optimization of Monitoring Sites in Urban Area of Taiyuan

The status of atmospheric pollution in urban area of Taiyuan was evaluated by the diurnal monitoring data from December,2008 to November 2009, and then the monitoring sites have been optimized. The results showed that the annual concentration of SO2 、NO2 and PM10 in Taiyuan was 0.105 mg/m3 ,0. 060 mg/m3 and 0. 197 mg/m3 respectively, which were close to or higher than the third limitations of the annual air＇pollutants values in the national ambient air quality standards. Affected by the climate and landform ,the SO2 ,NO2 and PM10 in the urban of Taiyuan showed the obvious seasonal variation and regional distribution. The eight monitoring sites was optimized and decreased to five by matter element analysis method, and the data from the monitoring stations still can describe the atmospheric pollution status in Taiyuan.