Characteristics and sources of polycyclic aromatic hydrocarbons in impervious surface run-off in an urban area in Shanghai, China  

作　　者：Juan HOU Lu BIAN Tian LI 

机构地区：[1]State Key Laboratory of Pollution Control and Resource Reuse, Tongji University

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2013年第10期751-759,共9页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：supported by the National Key Technology R&D Program of China(No.2010BAK69B16-1);the Shanghai Commission of Science and Technology(No.10dz1200402),China

摘　　要：Rainwater and run-off from three kinds of impervious surface in the Shanghai urban area,China were sampled.Polycyclic aromatic hydrocarbons(PAHs) were measured in the samples,and their sources were assessed.The mean sum of the 16 PAH concentrations measured in rainwater and run-offs from ceramic tiles,asphalt roofs,and asphalt roads were 873,1404,1743,and 4023 ng/L,respectively.The PAH concentrations found in this study were moderate compared to PAH concentrations found in run-offs in other studies.The main PAH components in the rainwater,roof run-off,and asphalt road run-off samples were 3-ring PAHs,3–4-ring PAHs,and 4–6-ring PAHs,respectively.Source apportionment results indicated that combustion(47.4%–55.5%) and vehicular emissions(30.5%–33.0%) were the major contributors to PAHs in roof run-off.Vehicular emissions were the most significant contributors to asphalt road run-off(47.2%),followed by combustion(23.5%),and petroleum(16.3%).Vehicular emissions and coal and natural gas combustion are therefore the most significant sources of PAHs in run-off from impervious surfaces in the Shanghai urban area.Rainwater and run-off from three kinds of impervious surface in the Shanghai urban area, China were sampled. Polycyclic aromatic hydrocarbons （PAHs） were measured in the samples, and their sources were assessed. The mean sum of the 16 PAH concentrations measured in rainwater and run-offs from ceramic tiles, asphalt roofs, and asphalt roads were 873, 1404, 1743, and 4023 ng/L, respectively. The PAH concentrations found in this study were moderate compared to PAH concentrations found in run-offs in other studies. The main PAH components in the rainwater, roof run-off, and asphalt road run-off samples were 3-ring PAHs, 3-4-ring PAHs, and 4~6-ring PAHs, respectively. Source apportionment results indicated that combustion （47.4%-55.5%） and vehicular emissions （30.5%-33.0%） were the major contributors to PAHs in roof run-off. Vehicular emissions were the most significant contributors to asphalt road run-off （47.2%）, followed by combustion （23.5%）, and petroleum （16.3%）. Vehicular emissions and coal and natural gas combustion are therefore the most significant sources of PAHs in run-off from impervious surfaces in the Shanghai urban area.

关 键 词：POLYCYCLIC AROMATIC hydrocarbons(PAHs) Impervious surface RUN-OFF pollution Source APPORTIONMENT 

分 类 号：X53[环境科学与工程—环境工程]