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中文摘要：
从2006年4月至2007年7月,对北京市不同类型道路的路面积尘进行了16个月的连续采样和分析,结果显示,交通道路路面积尘的3种粒径中∑16PAHs范围为123.71～18489.5ng/g,其16个月的几何均值为2378.28～4834.68ng/g,其中以3、4环为主。冬春季路面积尘中的多环芳烃含量高于夏秋季;交通道路路面积尘中的多环芳烃含量均比对照点高,不同类型的道路也呈现出差异,在同一条道路的机动车道、自行车道和人行道也表现出显著的差异。
英文摘要：
The roaddust continuously collected from different types of roads in Beijing from April 2006 to July 2007 was analyzed.The results revealed that the concentrations of ∑16PAHs of traffic roaddust for different size fractions ranged from 123.71 to 18 489.5 ng/g with the geometric means of 16 months from 2 378.28 to 4 834.68 ng/g.The 3-ring and 4-ring PAH compounds were predominant.The concentrations of PAHs of roaddust collected in winter and spring were higher than those of roaddust collected in summer and a...
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