中文摘要：

运用统计分析和多环芳烃（PAHs）比值法分析冬、夏两季上海市中心城区地表灰尘中16种EPA优控PAHs的来源和输入途径，并计算出各主要来源贡献率．结果表明，不完全燃烧来源和石油类产品泄漏来源的贡献率分别为70．97％、11.38％（冬季）和64．93％、14．11％（夏季）：上海市中心城区地表灰尘中PAHs主要来源于各类矿物燃料的不完全燃烧，而且主要来源于当地污染源．

英文摘要：

The source and transport pathway of 16 EPA priority PAHs in the road dusts collected from Shanghai urban area in winter and summer were analyzed. Statistics analysis and some diagnostic ratios were used for source identification and the contribution rates of main sources were also calculated. Pyrogenic PAHs and petrogenic PAHs accounted for 70.97% and 11.38% （winter） and 64.93% and 14.11% （summer） respectively. PAHs in the road dusts from Shanghai urban area were mostly generated by incomplete combustion. In addition, local pollution sources were the main sources.