内蒙古自治区主要城市空气质量状况分析

文章利用呼和浩特市、包头市、乌海市、赤峰市、东胜区2007年1月1日到2011年12月31日5a空气主要污染物SO2、NO2、PM10浓度资料,统计分析了各城区主要污染物的分布特征,得到:⑴总体来看,乌海市空气质量较差,其次是包头市,东胜区最好;⑵PM10浓度值变化幅度最大,日最大值均出现在3—5月的沙尘日中,SO2最大值都出现在冬季采暖期;⑶各地均是12月出现污染日数最多,其次是1月;⑷从2007年开始,空气质量状况逐年好转。

Analysis on the Main City Air Quality of Inner Mongolia

Based on data of major air pollutants of SO2 ,NO2,PMI0 during Jan 1,2007 and Dec 31,2011 in Hohhot, Baotou, Wuhai, Chifeng, Dongsheng city, the spatial and temporal distribution characteristics of major air pollutants were analyzed. The results showed that the air quality in Wuhai was worst generally, followed by Baotou.The air quality in Dongshen was best. The change of mean concentration data of PM10 was much more than others and maximum appeared in dust-days during Mar to May. Tile maximum of mean concentration data of SO2 occurred in winter heating periods. The days of pollutants in Dec in all above city reached most followed by that in Jan. The main city air quality in Inner Mongolia had been turning to better situation year by year since 2007.