Study of typical organochlorine pesticides bioaccumulation and influence factors in Daya Bay

QIU Yao-wen; ZHANG Gan; GUO Ling-li; LI Xiang-dong; LI Jun

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QIU Yao-wen, ZHANG Gan, GUO Ling-li, LI Xiang-dong, LI Jun. Study of typical organochlorine pesticides bioaccumulation and influence factors in Daya Bay[J]. Haiyang Xuebao, 2007, 29(2): 51-58.

Citation:

QIU Yao-wen, ZHANG Gan, GUO Ling-li, LI Xiang-dong, LI Jun. Study of typical organochlorine pesticides bioaccumulation and influence factors in Daya Bay[J]. Haiyang Xuebao, 2007, 29(2): 51-58.

QIU Yao-wen, ZHANG Gan, GUO Ling-li, LI Xiang-dong, LI Jun. Study of typical organochlorine pesticides bioaccumulation and influence factors in Daya Bay[J]. Haiyang Xuebao, 2007, 29(2): 51-58.

Citation:

QIU Yao-wen, ZHANG Gan, GUO Ling-li, LI Xiang-dong, LI Jun. Study of typical organochlorine pesticides bioaccumulation and influence factors in Daya Bay[J]. Haiyang Xuebao, 2007, 29(2): 51-58.

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Study of typical organochlorine pesticides bioaccumulation and influence factors in Daya Bay

1.
Key Laboratory of Tropic Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
2.
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
3.
Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Hong Kong, China

Received Date: 2006-04-08
Rev Recd Date: 2006-10-11

Abstract

Abstract

28 organism and 14 surface sediment samples from Daya Bay were collected to determine the compositions and concentrations of dichlorodiphenyltrichloroethanes(DDTs),hexachloro cyclohexanes (HCHs) and chlordanes(CHLs) in 2003.Stable isotope δ¹⁵N,δ¹³C values and lipid contents in organism were also measured.Attention was paid to study the OCPs pollution status in sediment and organisms and their bioaccum ulation law in Day a Bay.Average concentrations of DDTs,HCHs and CHLs in fishes were 57.1 52.9,0.30 0.18 and 0.87 0.35 ng/g wet weight,respectively.DDTs levels in organisms from Daya Bay were relatively higher and HCHs and CHLs levels were lower compared with those in other waters.High percent of p,p-DDT levels in surface sediments and relatively low(DDE+DDD) /DDT ratios (mean 0.56,<1) indicated new DDTs sources input to the bay.OCPs bioaccumulation was found to have a liposoluble charact eristics,the higher lipid content in organism the more OCPs accumulating in organism.Research on δ¹⁵N and δ¹³C in organisms showed that carnivorous fishes are liable to accumulate OCPs than planktivorous fishes.Significant correlation was observed between Biota-Sediment Accumulation Factors(BSAF) of OCPs and their lipophilic property,i.e.ratios of octanol/water(K_OW),in the waters of Daya Bay.
- organochlorine pesticides(OCPs),
- dichlorodipheny ltrichloroethane(DDTs),
- δ¹⁵N isotope,
- bioaccumulation,
- Daya Bay

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References(35)

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