摘要
利用乌鲁木齐市PM2.5//PM10自动监测数据,分析PM2.5与PM10的浓度分布特征和时间变化规律。结果表明,按照《环境空气质量标准》（二次征求意见稿）的标准限值,乌鲁木齐市冬季PM2.5污染重于PM10。PM2.5浓度为0.164mg/m3,超过二级年标准限值的3.7倍,超标率为73.9%。PM2.5浓度日变化曲线昼高夜低,呈单峰型,峰值出现在13：00~14：00（北京时间）。PM10中PM2.5所占比例较高,PM2.5/PM10为0.79,相关分析和检验显示PM2.5与PM10的线性相关显著,相关系数为0.92。
Using automatic monitoring data of PM2.5/ PMl0 Urumqi city, and analyzed concentration distribution and temporal variation of PM2.5 and PM10. The resuIts showed that the standard limits in accordance with the ambient air quality standaxd （second draft）, Ururaqi, PM2.5 pollution in winter was more serious than PM10. PM2.5 concentration was 0.164 mg/m3, over the 2 year standard limit of 3.7 times, exceeded the rate was 73.9%. PM2.5 concentration diurnal variation curve was day high and night low, single peak, the peak appeared in the 13：00 to 14：00 pro. PMio, PM2.5 shared a higher proportion, PM2.JPMIo was 0.79, analysis and tests had shown a significant linear correlation of PM2.5 and PMI0, correlation coefficient was 0.92.
出处
《干旱环境监测》
2012年第2期81-84,111,共5页
Arid Environmental Monitoring
