The pollution characteristics and risk assessment of polycyclic aromatic hydrocarbons of Shen-Fu section of the Hun River Basin
LI Shuang1, LIU Yin-zuo1, LIU Ru-yu1, XIANG Xin-xin1, ZHANG Shi-chao2, LU Yin-tao1
1. Beijing Key Laboratory of Aqueous Typical Pollutants Control & Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, China;
2. Energy Saving & Environmental Protection & Occupational Safety and Health Research Institute, Beijing 100081, China
In order to study the pollution change law of polycyclic aromatic hydrocarbons (PAHs) of Shen-Fu section of the Hun river basin during the process of urbanization, river water and sediments samples at 17points were collected from 2015 to 2017, and concentrations of 16 PAHs in the US EPA priority control list were analyzed. The results showed that the concentrations of ∑16PAHs in river water and sediments were in the range of 15.64~2100.58ng/L and 95.19~8444.21ng/g, respectively. The average value in river water and sediments indicated that seasonal characteristics were flat > dry > high water period and flat≈high > dry water period, separately. Based on isomer ratios and principal component analysis, PAHs in river water and sediments had similar major sources: combustion and vehicle emissions. Meanwhile, the sources of PAHs in river water were more complex as it had additional inputs from oil sources and atmospheric deposition. The risk quotient method and the incremental lifetime cancer risk model showed that there were medium and high ecological risks of river water and sediments, and the river water was at a relatively low cancer risk level.
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LI Shuang, LIU Yin-zuo, LIU Ru-yu, XIANG Xin-xin, ZHANG Shi-chao, LU Yin-tao. The pollution characteristics and risk assessment of polycyclic aromatic hydrocarbons of Shen-Fu section of the Hun River Basin. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(4): 1551-1559.
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