为了分析沈阳市采暖期大气可吸入颗粒物污染特征，对2015年采暖期大气中PM2.5和PM10采样，利用SPSS（统计产品与服务解决方案）分析软件分析了两种粒径的颗粒物在采暖期的浓度变化特征以及两者之间所占比例关系。结果表明，PM10质量浓度范围为90.46~400.8 μg/m3，平均值是230.53μg /m3，超标率为75.14%。PM2.5的浓度范围为80.34~260.13μg /m3，平均值是157.63μg /m3，超标率89.56%。PM2.5/PM10在30.50%~98.09%之间，平均值为68.28%。PM2.5和PM10的质量浓度之间有明显的相关性。对颗粒物电镜下的观察分析，发现采暖期大气主要污染源是煤燃烧烟气排放和机动车尾气排放。

In order to analyze pollution characteristics of atmospheric particulate matters during the heating period of 2015 in Shenyang,PM2.5 and PM10 were collected.The concentration variation characteristics and proportion relationship were analyzed for two kinds of particulate matter with different particle sizes by using SPSS.The results showed that,the concentration of PM10 is among 90.46~400.8μg/m3,with an average at 230.53μg/m3 and over standard rate at 75.14%.The concentration of PM2.5 is among 80.34~260.13μg/m3,with an average value at 157.63μg/m3 and over standard rate at 89.56%.The ratio of PM2.5/PM10 is 30.50%~98.09%,with average at 68.28%.Meanwhile,for mass concentration,there are significant correlations between PM10 and PM2.5.From electron microscopy analysis of the particles,it was concluded that particulate matters mainly come from coal combustion,flue gas emissions and vehicle exhaust emissions in heating period.

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