Characteristics and Ecological Risk Assessment of POPs Pollution in Sediments of Xiaoxingkai Lake in the Northeast China

被引：0
|
作者：
Li H. [1 ,2 ,3 ,4 ]
Li J. [1 ,2 ,3 ,4 ]
Song P. [4 ]
Cheng Y.-X. [1 ,2 ,3 ]
Jiao L.-X. [1 ,2 ,3 ]
Yang Y.-Z. [1 ,2 ,3 ,4 ]
机构：
[1] National Engineering Laboratory of Lake Water Pollution Control and Ecological Restoration Technology, Chinese Resarch Academy of Environmental Sciences, Beijing
[2] State Key Laboratory of Environmental Protection for Drinking Water Sources, Chinese Resarch Academy of Environmental Sciences, Beijing
[3] National Key Laboratory of Environmental Protection Lake Pollution Control, Chinese Resarch Academy of Environmental Sciences, Beijing
[4] College of Agriculture, Henan University of Science and Technology, Luoyang
来源：
Huanjing Kexue/Environmental Science | 2021年 / 42卷 / 01期
关键词：
Ecological risk; Persistent organic pollutants(POPs); Pollution characteristics; Source analysis; Xiaoxingkai Lake;
D O I：
10.13227/j.hjkx.202005131
中图分类号：
学科分类号：
摘要：
The pollution characteristics of polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs), and phthalate esters (PAEs) in the surface sediments of Xiaoxingkai Lake were analyzed by GC-MS, and the main sources and biological toxicity risks of the pollutants were discussed. The results show that: ① The content of PAHs in the sediments of xiaoxingkai lake ranged from 82.1 to 534.6 ng•g-1, and the concentration of PAHs in the northwestern port of the lake was higher. The content of OCPs and PAEs in the sediments ranged from 4.8 to 50.4 ng•g-1 and 33.3 to 401.6 ng•g-1, respectively. The concentration was higher in the southeastern lakes. ② PAHs in the sediments were dominated by 3-5-ring compounds (accounting for more than 85%), which were mainly combustion sources, among which the combustion of coal and firewood contributed 47%, the combustion of gasoline and diesel contributed 39%, and the oil product leakage contributed 14%. The OCPs were mainly HCHs (78%) from the use of new lindane and the input of a small amount of industrial HCHs. The PAEs were mainly dibutyl phthalate (DBP) and diethyl phthalate (2-ethyl hexyl) ester (DEHP; 94%), which were mainly derived from household garbage and common human articles. ③ Compared with other lakes in China, PAHs and PAEs in the sediments of Xiaoxingkai Lake are at a low pollution level, and there is no ecological risk at present, but some OCPs at some points present a moderate ecological risk. © 2021, Science Press. All right reserved.
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页码：147 / 158
页数：11
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