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

Author:
Sun, Runxia, Luo, Xiaojun, Zheng, Xiaobo, Cao, Kun, Peng, Pingan, Li, Qing X., Mai, Bixian
Source:
Marine pollution bulletin 2018 v.126 pp. 357-362
ISSN:
0025-326X
Subject:
Cirrhinus molitorella, Hypostomus, Oreochromis niloticus, carp, electronic wastes, gross domestic product, hexabromocyclododecane, lipids, persistent organic pollutants, recycling, river deltas, rivers, water pollution, China
Abstract:
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.
Agid:
5971332