乌鲁木齐市冬季大气颗粒物PM_(10) 和PM_(2.5)污染水平及相关性研究

Study on Pollution Level and Correlation of The Atmospheric Particulate Matter PM_(10) and PM_(2.5) in Winter of Urumqi

为研究乌鲁木齐市冬季采暖期间大气颗粒物污染特征，通过采样和在线监测二种手段分析了2015年1～2月大气颗粒物样品，采用重量法分析颗粒物质量浓度，并对其相关性进行分析。结果表明：依据《环境空气质量标准》（GB 3095－2012），采样期间乌鲁木齐市大气PM10和PM2．5的日均质量浓度均超过了国家二级标准，颗粒物污染严重；PM10和PM2．5存在显著相关性，PM2．5和PM10浓度的比值均大于0．5，采暖期PM2．5对乌鲁木齐市大气颗粒物贡献显著。

In order to investigating the atmospheric particulate matter pollution characteristics during the heating period in Uru -mqi,we gathered the PM10/PM2.5 samples from January to February 2015,analyzed samples through sampling and online moni-toring ,then,measured the mass concentration by weight method and analyzed its relevance .The results showed that atmospher-ic particulates PM10 and PM2.5 daily average concentrations in Urmuqi during the monitoring period were both exceed to the na -tional secondary standards according with the ambient air quality standard （ GB 3095-2012 ） ,particulate matter pollution was serious;There was a significant correlation between PM 10 and PM2.5 ,the average ratio of PM 2.5 and PM10 was greater than 0.5, PM2.5 contributed significantly to the atmospheric condition during heating period in Urumqi .