包头市采暖期大气颗粒物PM_(10)与PM_(2.5)污染水平研究

Study on Pollution Level of Atmospheric Particulate Matter PM_(10) and PM_(2.5) During Heating Period in Baotou City

为了解包头市采暖期大气颗粒物PM2.5与PM10的污染特征,在包头市城区设置采样点,在采暖期采集了PM2.5与PM10,对其中的水溶性离子、元素、有机碳、元素碳的含量进行了分析。结果表明:水溶性离子、元素组分是包头市采暖期大气颗粒物的主要成分,并且在细颗粒物中聚集较多;采暖期的燃煤为2种粒子中元素的主要来源之一;采暖期PM2.5与PM10中OC、EC有共同的污染源,主要来源是燃煤、机动车尾气和生物质燃烧;PM2.5与PM10中有二次反应生成的有机碳。

In order to understand the pollution characteristics of atmospheric particulates in Baotou City during the heating period,set the sampling points in the urban area of Baotou City,collected PM2.5 and PMi0 in the heating period,and analyzed the content of water soluble ions, elements, organic carbon and elemental carbon. The results showed that water soluble ions and elements were the main component of atmospheric particulate matter during the heating period, gathered more in fine particle;Coal was one of the main sources of two particles in elements during the heating period;OC and EC had common source of contamination,organic carbon generated by the secondary reaction ;The major source of PM2.5 and PM10 were coal burning, vehicle exhaust and biomass burning.