污染物

This paper analyses the daily data of pollutant concentration and meteorological data of Taiyuan in 2003, ex-pounds the relationship among space and time changes of pollutant concentration, pollutant concentration and meteorological conditions, refers reference for lightening and preventing air pollution.

对2003年太原市污染物浓度逐日数据和气象资料进行了分析，阐述了污染物浓度的时空变化和污染物浓度与气象条件的关系，为减轻和防止大气污染提供了参考。

Considering mass balance of pollutant materials, a theoretical formulation is derived for describing time variation of CO concentration in indoors by introducing mixing factor and decay rate.

在引入了室内污染物混合因子概念并考虑到浓度衰减效应后，根据污染物质量平衡关系，从理论上导出了一个预测室内气态污染物浓度随时间变化的公式。

The result showed that air pollution diffused badly in fog days in Shanghai and caused serious air pollution. The time of high concentration of air pollution was synchronization with fog formation and disappearance, the pollution concentration was 2-10 fold higher than before fog appearance.

结果表明，上海出现雾天时，不利于大气污染物的扩散，造成雾天大气污染较严重，污染物浓度高值出现的时间与雾的形成至消散基本同步，比起雾前高2～10倍。