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Hexabromocyclododecanes (HBCDs) in fish: Evidence of recent HBCD input into the coastal environment

Sun, Runxia, Luo, Xiaojun, Zheng, Xiaobo, Cao, Kun, Peng, Pingan, Li, Qing X., Mai, Bixian
Marine pollution bulletin 2018 v.126 pp. 357-362
Cirrhinus molitorella, Hypostomus, Oreochromis niloticus, carp, electronic wastes, gross domestic product, hexabromocyclododecane, lipids, persistent organic pollutants, recycling, river deltas, rivers, water pollution, China
Hexabromocyclododecanes (HBCDs) are flame retardants and emerging persistent organic pollutants. In the present study, α-, β-, and γ-HBCDs were measured in several fish species from rivers and an electronic waste (e-waste) recycling site in Pearl River Delta, South China. The concentrations of HBCDs were 12.8 to 640, 5.90 to 115, and 34.3 to 518ng/g lipid weight (lw) in mud carp (Cirrhinus molitorella), tilapia (Tilapia nilotica), and plecostomus (Hypostomus plecostomus), respectively. Plecostomus showed the highest HBCD concentrations among three fish species. The contributions of α-HBCD to total HBCDs were 78% to 97%, 93% to 99%, and 87% to 98% in carp, tilapia, and plecostomus, respectively. Fish samples from a harbor and the e-waste site exhibited the highest HBCD concentrations among all samples. The HBCD concentrations were not significantly correlated with the gross domestic product or population data. e-Waste recycling activities, harbor construction, and shipment might be recent HBCD sources.