摘要：采集了大同市2004年9月大气颗粒物样品,应用外束质子激发X荧光(PIXE)方法分析得到了20种元素浓度谱分布。分析结果表明:大气颗粒物样品中绝大多数元素的浓度较低,多数元素呈粗粒模态分布;大同市秋季颗粒物污染较轻。富集因子分析结果表明,大同市秋季大气中颗粒物主要来源于源燃煤尘、土壤尘和工业排放源。

关键词：大气气溶胶；元素浓度；富集因子分析

Abstract：The atmospheric aerosol samples were collected during September at Datong, a city in Shanxi Province in 2004 autumn and were analyzed by PIXE which resulted in 20 element concentrations. The observation results showed that the concentrations of the most elements were low in observation period,and the distribution of most elements was coarse mode. The enrichment factor analysis for element concentrations indicated that there were four main sources for the atmospheric aerosols at Datong: coal combustion dust, the soil dust and industry dust.

Keywords：atmospheric aerosol;elemental concentration;enrichment factor analysis