龙岩市大气颗粒物来源统计分析

通过采样和分析,对龙岩市大气颗粒物10种主要源样品进行了富集因子分析和R型聚类分析.结果表明:各类源样品的成分谱具有显著差异,对不同元素的富集程度各不相同,但对金属元素的富集程度均较高.高岭土矿中W的富集因子为255.32, Bi的富集因子为520.12,红土壤中Bi的富集因子为173.41,小煤炉灰中Sb的富集因子为119.98,以机动车尾气、钢铁厂及燃煤等的贡献为主;龙岩市大气颗粒物的来源可以分为4个类型,即道路尘及土壤风沙尘类,建筑水泥尘类,金属冶炼及钢铁厂尘类和饲料厂尘类别.

Statistical analysis of atmospheric particulate matter sources in Longyan City

In order to determine the main pollution sources of atmospheric particles in Longyan City, elemental compositions of 10 kinds of dust samples were analyzed through enrichment factor analysis and R-cluster analysis. Component spectrum of each dust sample were significantly different. However, concentrations of metallic elements contained in those samples all exceeded the normal levels. The enrichment factor (EF) values of W and Bi in kaolin mining respectively were 255.32, 520.12. That of Bi in red soil reached 173.41. And the EF value of Sb in coal ash was 119.98. This is mainly due to the contribution of motor vehicle exhaust, steel mills and coal combustion, etc. This analysis revealed that main origins of atmospheric particles in Longyan City are road and soil dust, cement dust, metallurgical dust, and fodder dust.