Faculty of Chemistry, TNU University of Science, Thai Nguyen University, Tan Thinh Ward, Thai Nguyen City, Viet Nam.
Faculty of Environment, Hanoi University of Natural Resources and Environment, Cau Dien, Tu Liem, Hanoi, Viet Nam.
Mar Pollut Bull. 2024 Dec;209(Pt A):117097. doi: 10.1016/j.marpolbul.2024.117097. Epub 2024 Oct 10.
Concentrations of typical persistent organochlorine pollutants (POCPs) like organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in five bivalve species collected from central Vietnamese coasts were determined to provide insights into spatial distribution and bioaccumulation characteristics of these substances. Concentrations of pollutants decreased in the order: PCBs (median 14.6; range 1.39-74.1), dichlorodiphenyltrichloroethane and its metabolites DDTs (2.92; 0.282-70.7), hexachlorocyclohexanes HCHs (2.46; 0.081-30.1), and endosulfan compounds ENDs (1.67; 0.041-36.6) ng/g wet weight. Considerable levels of legacy POCPs in the biota are likely attributed to illegal and/or unintentional sources. Concentrations and accumulation profiles of POCPs in biota samples were affected by species- and site-specific factors. The biota-sediment accumulation factors predicted enrichment potentials of OCPs (notably ENDs and DDTs) from sediment to biota in some certain areas.
从越南中部沿海采集的五种双壳类动物中，测定了典型持久性有机氯污染物（POPs）（如有机氯农药（OCPs）和多氯联苯（PCBs））的浓度，以了解这些物质的空间分布和生物积累特征。污染物浓度按以下顺序降低：多氯联苯（中位数 14.6；范围 1.39-74.1）、滴滴涕及其代谢物（2.92；0.282-70.7）、六氯环己烷（HCHs）（2.46；0.081-30.1）和硫丹化合物（ENDs）（1.67；0.041-36.6）ng/g 湿重。生物体内大量存在的持久性有机氯污染物可能归因于非法和/或无意来源。生物体内持久性有机氯污染物的浓度和积累特征受到物种和地点特异性因素的影响。在某些特定区域，生物-沉积物积累因子预测了 OCPs（尤其是 ENDs 和 DDTs）从沉积物向生物体内的富集潜力。
