中文摘要：

建立了一套基于放射性碳及稳定碳同位素比定量估算大气细颗粒物PM2.5（动力学直径以≤2．5μm）中有机污染物来源的方法，并用该方法初步估算上海市宝山地区大气PM2.5中有机污染物的来源。结果表明，宝山区冬季大气颗粒物中有机污染物的来源主要来自石化产物，占到了总量的64．7％，而非石化产物只有35.3％；其中石化燃料产物分担率中主要是机动车尾气的贡献，非石化燃料产物分担率中可能主要是二次扬尘。

英文摘要：

The specific activities of ^14C and stable carbon isotopic compositions were used to partition the sources. The fractional distribution of the sources of organic pollutants in fine airborne particles PM2.5, collected from Baoshan District,Shanghai City,was also primarily determined. The organic pollutants in the PM2.5 originated mainly from the fossil products, whose accounted for 64.7% of the total organic pollutants while the non-fossil products accounted for 35.3 %. The vehicle exhaust was main origination of the fossil products while the second fugitive dust for the non-fossil products.