摘要
于2006年在重庆主城九区和缙云山共计10个测点采集大气PM10样品。针对主城区颗粒物的主要排放源土壤尘、建筑水泥尘、燃煤烟尘、钢铁尘、汽车尾气尘和道路扬尘等采集PM10样品,对样品所含无机元素、有机碳(OC)和元素碳(EC)、水溶性离子进行测定。采用主城PM10源组分特征的成份谱,利用CMB模型对PM10进行源解析。结果表明:重庆主城PM10来源贡献大小依次为建筑水泥尘、道路扬尘、燃煤排放物、机动车排放物、其它类尘和钢铁尘;源解析结果显示各测点PM10组成贡献有较明显的空间差异。
Ambient air samples about PM10 were collected in nine districts and Jinyun mountain in Chongqing in 2006. Main Source samples about PM10 concluded soil dust, construction cement dust, coal burning dust, iron dust, vehicle exhaust dust and road dust. Inorganic elements,OC, EC and water--soluble ions of all samples were determined. The Chemical Mass Balance（CMB） model was applied in this study by uslng representative profiles to apportion source contributions to PM10 in main districts of Chongqing. The results showed that the major source in sequence were construction cement dust, road dust, coal burning dust, vehicle exhaust dust, other dust and iron dust. The results also showed the distinct spatial variations of source contributions were perceptible.
出处
《三峡环境与生态》
2008年第3期14-17,共4页
Environment and Ecology in the Three Gorges
关键词
PM10
源解析
重庆市主城
PM10
source apportionment
main districts of Chongqing
