南宁市区交通环境空气颗粒物中碳组分的污染特征分析研究

含碳颗粒物是大气颗粒物的重要组成部分,对人体健康产生很大的威胁.分别于2012年夏季及2013年冬季在南宁市选取六条主要交通干道采集了PM10、PM2.5样品,分析测定了其中的碳组分.结果表明,碳组分浓度季节变化明显.碳组分在细颗粒物中占有比重比在可吸入颗粒物中大.存在二次有机碳污染.对8种碳组分丰度分析说明南宁市大气颗粒物中碳组分的主要来源是燃煤、机动车尾气及生物质样品燃烧.

Carbon Fraction Analysis of Atmospheric Particles in Urban Road Environment in Nanning

In the summer of 2012 and the winter of 2013, the concentrations of carbonaceous species were measured with PM2. 5 samples and PM10 samples in six main traffic in Nanning city respectively. The results reveal that carbon component concen-trations seasonal changes significantly. Carbon components are more likely to accumulate in fine particles. existed secondary or-ganic carbon pollution in summer and winter. Eight kinds of carbon component analysis showed that the main source of the carbon component of atmospheric particulate matter in Nanning is coal, vehicle exhaust and incinerated biomass samples.