彭州市环境空气质量变化趋势及规律分析

Analysis of Changing Trend and Law of Ambient Air Quality in Pengzhou City

“九五”期间 ,彭州市环境空气监测主要因子有二氧化硫、二氧化氮、总悬浮颗粒物、降尘和降水。市区空气中主要污染物排序依次为降尘、总悬浮颗粒物、二氧化硫、二氧化氮。其季节变化规律一般为第一季度 >第二季度 >第四季度 >第三季度。主要污染物年变化依次为降尘、总悬浮颗粒物、二氧化硫、二氧化氮 ,在“九五”期间除降尘量出现缓慢下降趋势外 ,其余 3项均不明显。

The main factors of ambient air monitioring in Pengzhou city were SO 2,NO 2,TSP,dustfall and acid rain during the period of 9th Five-Year Plan The ordering of the main pollutants in the urban air was dustfall,TSP,SO 2,NO 2 The seasonal changing law was first quarter>second quarter>fourth quarter>third quarter The annual change in the main pollutants was dustfall,TSP,SO 2,NO 2,during the period of 9th Five-Year Plan Except the dustfall decends slowly,the others are not apparently