caa a22 4500 467902372 CHVBK 20180406152822.0 cr unu---uuuuu 170328e20060501xx s 000 0 eng 10.1007/s10661-006-7233-1 doi (NATIONALLICENCE)springer-10.1007/s10661-006-7233-1 Determination and Assessment of HCHs and DDTs Residues in Sediments from Lake Dongting, China [Elektronische Daten] [Yong Qian, Minghui Zheng, Bin Zhang, Lirong Gao, Wenbin Liu] The contamination of organochlorine pesticides hexachlorocyclohexane (HCH) and Dichlorodiphenyltrichloroethane (DDT) and their eco-environmental assessment in surface sediments from Lake Dongting, the second-largest freshwater lake in China, were studied. Concentrations of ∑HCH (=α-HCH + β-HCH + γ-HCH +δ-HCH) were 0.21--9.59 ng/g dry weight and those of ∑ DDT = p,p'-DDD+p,p'-DDE+o,p'-DDT+p,p'-DDT) ranged from under detectable limit to 10.15 ng/g dry weight. The ratios of α-HCH to γ-HCH were above 7 at most sampling sites while no or a small amount of β-HCH were found at all sites, suggesting the degradation of HCH used in the history and possibly current use of HCH in the region. The low ratios (below 2.0 in most cases) of (p,p'-DDE+p,p'-DDD) to p,p'-DDT and high levels of individual isomers of DDT at some sites also suggested that there have still been fresh inputs of DDT into Lake Dongting. Through the comparison between concentrations of HCH and DDT residues in sediments of Lake Dongting and those from other places in China and also from the results of our eco-environmental assessment, it can be concluded that Lake Dongting is the water body with high contamination of both HCH and DDT in its sediments in comparison with other water bodies in China. Springer Science + Business Media, Inc., 2006 organochlorine pesticides nationallicence HCH nationallicence DDT nationallicence sediments nationallicence assessment nationallicence ERL nationallicence ERM nationallicence Qian Yong State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Zheng Minghui State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Zhang Bin State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Gao Lirong State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Liu Wenbin State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Environmental Monitoring and Assessment Kluwer Academic Publishers 116/1-3(2006-05-01), 157-167 0167-6369 116:1-3<157 2006 116 10661 https://doi.org/10.1007/s10661-006-7233-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-7233-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Qian Yong State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Zheng Minghui State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Zhang Bin State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Gao Lirong State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Liu Wenbin State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 116/1-3(2006-05-01), 157-167 0167-6369 116:1-3<157 2006 116 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer