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Sci Total Environ

Title:		"National investigation of semi-volatile organic compounds (PAHs, OCPs, and PCBs) in lake sediments of China: Occurrence, spatial variation and risk assessment"
Author(s):		Li C; Huo S; Yu Z; Xi B; Yeager KM; He Z; Ma C; Zhang J; Wu F;
Address:		"State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, People's Republic of China. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, People's Republic of China. Electronic address: huoshouliang@126.com. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, People's Republic of China. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, People's Republic of China. Department Earth and Environmental Sciences, University of Kentucky, Lexington, KY 40506, United States"
Journal Title:		Sci Total Environ
Year:		2017
Volume:		20161122
Issue:
Page Number:		325 - 336
DOI:		10.1016/j.scitotenv.2016.11.097
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"In this study, a large scale investigation of semi-volatile organic compounds (SVOCs) in sediments from 52 lakes, located in five geographic regions across China, was conducted to assess sediment quality in terms of organic contaminants. Concentrations of polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs), and polychlorinated biphenyls (PCBs) in sediment were found to range between 17.00-6,633, 0.12-45.24, and 0.03-13.99ngg(-1), respectively. Lake sediments from different regions exhibited variation in contamination levels, and in the compositions of isomers. The descending order of contamination levels for the three SVOCs groups (i.e., summation operatorPAHs, summation operatorOCPs, summation operatorPCBs) were as follows: the eastern plain region (EPR)>the Yunnan-Guizhou plateau (YGP)>the northeast China region (NCR)>the Qinghai-Tibet plateau (QTP)>the Mongolia-Xinjiang plateau (MXP). High molecular weight PAHs, OCPs and PCBs were found at high concentrations in parts of the EPR and YGP, while lighter isomers were likely to be atmospherically transported, resulting in their nationwide distribution. The sources and type variation (local input or atmospheric deposition) are the primary controls of spatial variation. Additionally, human related socio-economic factors, and geographic conditions also played important roles in influencing the spatial differentiation. According to simple sediment quality guidelines (SQG), the risks posed by PCBs in sediments were not as serious as those posed by PAHs and DDT"
Keywords:		"China *Environmental Monitoring Geologic Sediments/chemistry Hydrocarbons, Chlorinated/analysis Lakes/chemistry Pesticides/analysis Polychlorinated Biphenyls/analysis Polycyclic Aromatic Hydrocarbons/analysis Volatile Organic Compounds/*analysis Water Pol;"
Notes:		"MedlineLi, Chaocan Huo, Shouliang Yu, Zhiqiang Xi, Beidou Yeager, Kevin M He, Zhuoshi Ma, Chunzi Zhang, Jingtian Wu, Fengchang eng Netherlands 2016/11/27 Sci Total Environ. 2017 Feb 1; 579:325-336. doi: 10.1016/j.scitotenv.2016.11.097. Epub 2016 Nov 22"