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Occurrence of organochlorine pesticides and polychlorinated biphenyls in sediment and fish in Cau Hai lagoon of Central Vietnam: human health risk assessment
Tran, T.A.M.; Malarvannan, G.; Hoang, T.L.; Nguyen, V.H.; Covaci, A.; Elskens, M. (2019). Occurrence of organochlorine pesticides and polychlorinated biphenyls in sediment and fish in Cau Hai lagoon of Central Vietnam: human health risk assessment. Mar. Pollut. Bull. 141: 521-528. https://dx.doi.org/10.1016/j.marpolbul.2019.03.006
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363
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| Trefwoorden |
Pisces [WoRMS]
Marien/Kust |
| Author keywords |
Organochlorine pesticides (OCPs); Polychlorinated biphenyls (PCBs);Sediment; Fish; Cau Hai lagoon |
| Auteurs | | Top |
- Tran, T.A.M.
- Malarvannan, G.
- Hoang, T.L.
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- Nguyen, V.H.
- Covaci, A.
- Elskens, M.
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| Abstract |
This is the first study on polychlorinated biphenyls (PCBs) in fish from the Cau Hai lagoon, a part of the largest coastal lagoon in Southeast Asia. Seven selected PCB congeners and organochlorine pesticides in sediments and edible fish tissues were quantified by GC–MS. The sum of ICES-7 PCB and DDTs concentrations in fish species consumed regularly and of economic value were in ranges 26–43 ng g−1 lw and 182–277 ng g−1 lw, respectively. The ratio between the parent DDT compound and the sum of metabolites, DDE and DDD, was most of the time smaller than 1, suggesting primarily an historical contamination of the lagoon. An agglomerative hierarchical clustering indicates sites located in the north-western part of the Cau Hai lagoon were characterized by above-average concentrations of DDE and DDT. Comparing to previous data, a large decrease in ∑DDT residues can be seen over the past 20 years. |
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