Ecotoxicological effects of mixed pollutants resulted from e-wastes recycling and bioaccumulation of polybrominated diphenyl ethers in Chinese loach (Misgurnus anguillicaudatus).
To understand potential ecotoxicological effects of electrical and electronic equipment waste (e-waste) recycling and polybrominated diphenyl ethers (PBDEs) bioaccumulation in loaches, a semi-field experiment using Chinese loach (Misgurnus anguillicaudatus) as experimental fish was performed. Larval loaches were kept in net-cage for three months in an e-wastes recycling site and a reference site in Southeastern China. There was significant difference of the survival rate between the loaches from the e-wastes recycling site (27%, 19/70) and from reference site (70%, 49/70). Histopathological responses were also found in all the livers examined in loaches from the e-wastes recycling site. These results showed that mixed pollutants resulted from e-wastes recycling led to ecotoxicological effects on loaches. The bioaccumulation of polybrominated diphenyl ethers (PBDEs), the main pollutants in e-waste, in loaches was also studied, the mean concentration of total PBDEs in sediment was 6726.17 ng/g wet weight and in water samples was 4.08 ng/L (dissolved phase). BDE 209 was the dominant congener in sediment and with relatively high concentration in water. Relatively low concentration of BDE 209 (less than 0.01% of total PBDEs) and high concentration of BDE47 (up to 39.34% of total PBDEs) were detected in loaches.
Qin
Xiaofei
X
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. xiaofeiqin@163.com
Xia
Xijuan
X
Li
Yan
Y
Zhao
Yaxian
Y
Yang
Zhongzhi
Z
Fu
Shan
S
Tian
Mi
M
Zhao
Xingru
X
Qin
Zhanfen
Z
Xu
Xiaobai
X
Yang
Yongjian
Y
D000818:Animals; D002681:China; D003247:Conservation of Natural Resources; D003531:Cypriniformes / Q000254:growth & development / Q000378:metabolism*; D055615:Electrical Equipment and Supplies; D004785:Environmental Pollutants / Q000032:analysis / Q000378:metabolism / Q000633:toxicity*; D005523:Food Supply / Q000592:standards; D019015:Geologic Sediments / Q000032:analysis; D055768:Halogenated Diphenyl Ethers / Q000032:analysis / Q000378:metabolism / Q000633:toxicity*; D014867:Water / Q000032:analysis
D004785:Environmental Pollutants; D055768:Halogenated Diphenyl Ethers; D014867:Water