Residues and sources of chlorinated flame retardant Dechlorane Plus in sediment from Hangzhou Bay, China

doi:10.3969/j.issn.1001-909X.2014.02.007

Abstract

Abstract: Due to the bans or restrictions of brominated flame retardants all over the world, Dechlorane Plus (DP) has been considered as one of the recommended substitutes. However, as an additive, DP has a tendency to escape from the products and become an environmental contaminant, while limited information relevant to DP pollution in the environment has been reported. Residues and isomeric compositions of DP in four sediment cores from Hangzhou Bay, China were tested in the present study. The results show that the content levels of syn-DP and anti-DP, the two isomers of DP, vary from BDL~17.7 pg/g.dw(mean 2.9±3.2 pg/g.dw) and 1.4~38.1 pg/g.dw(mean 8.0±8.5 pg/g.dw), respectively, which are within the low level globally. Obvious differences exist between the DP levels of core 1 and the other 3 sediment cores, implying an additional contribution of DP pollution from the Jinshan Industrial Zone. However, the contents of DP vary little with depth. Moreover, the average f_syn values of DP are in the range of 0.25~0.28, suggesting that DP in Hangzhou Bay primarily originates from the long-distance transportation.

Key words: Dechlorane Plus, Hangzhou Bay, sediment

CLC Number:

ZHOU Shan-shan, TANG Qiao-zhi. Residues and sources of chlorinated flame retardant Dechlorane Plus in sediment from Hangzhou Bay, China[J]. Journal of Marine Sciences, 2014, 32(2): 53-58.

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