摘要
为了研究沈抚新城城镇化建设进程中,浑河流域沈抚段河水和沉积物中多环芳烃(PAHs)的污染变化规律,于2015～2017年对17个点位进行样品采集,对16种USEPA优先控制PAHs进行分析,并对其污染特征、来源及风险进行调查和评估.结果表明,河水和沉积物中∑_(16)PAHs含量范围分别为15.64～2100.58ng/L,95.19～8444.21ng/g,均值分别呈现平水期>枯水期>丰水期、平水期≈丰水期>枯水期的季节特点.利用同分异构体比值法和主成分分析法对PAHs的污染来源进行解析,得出河水和沉积物中PAHs的主要来源都是燃烧源和交通源,但河水中PAHs的来源较沉积物中更为复杂,增加了石油源的输入和大气沉降的影响.风险熵值法和终生癌症风险增量模型表明河水和沉积物均存在中高等生态风险,河水整体处于较低的癌症风险水平.
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.
作者
李爽
刘殷佐
刘入瑜
向鑫鑫
张士超
鲁垠涛
LI Shuang;LIU Yin-zuo;LIU Ru-yu;XIANG Xin-xin;ZHANG Shi-chao;LU Yin-tao(Beijing Key Laboratory of Aqueous Typical Pollutants Control & Water Quality Safeguard, Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Beijing 100044, China;Energy Saving & Environmental Protection & Occupational Safety and Health Research Institute, Beijing 100081, China)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2019年第4期1551-1559,共9页
China Environmental Science
基金
北京交通大学基本科研业务费(2016JBM038
2016JB008)
关键词
浑河流域
多环芳烃
时空分布
源解析
风险评价
the Hun River Basin
PAHs
spatial and temporal distribution
source analysis
risk assessment
