摘要
利用2011年1～4月沈阳市环境空气中PM2.5自动监测资料进行分析,结果表明,冬季1月和2月污染严重,日均值超标率达到50.0%～64.5%。1天中PM2.5有2个峰值,最大值出现在上午8～9时,次之出现在22时,15时浓度最低。冬季PM2.5污染严重的原因是冬季采暖燃煤量大,污染物排放量大,加之气象扩散条件差导致污染严重。
It analyzed the automatic monitoring data of PM2.5 in Shenyang from Jan 2011 to Apr.The results showed that it was polluted seriously in Jan and Feb,which was 50.0～64.5% beyond the daily mean value.There were 2 peaks of PM2.5 a day, the maxi mum and sub-maximum appeared at 8～9 am and 10 pm,while the minimum at 3pm.The serious pollution in winter was because of large amount of coal burning and pollutants discharge, and the bad condition of atmospheric diffusion.
出处
《环境保护科学》
CAS
2011年第3期13-15,共3页
Environmental Protection Science
关键词
颗粒物
PM2.5
污染现状
沈阳市
Particulate Matter Particulate Matter 2.5（PM2.5） Pollution Status Shenyang
