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Concentration and bioaccumulation of chlorinated flame retardant dechlorane plus in intertidal zone of Yellow Sea,Dalian
Pages: 674-678
Year: Issue:  5
Journal: Marine Environmental Science

Keyword:  intertidal zoneDPenvironmental mediabioaccumulation;
Abstract: Dechlorane plus( DP) is a high production volume( HPV),chlorinated flame retardant which was added in electrical hard plastic connectors in televisions and computer monitors,wire coatings and furniture. It consists of the syn and anti isomers,which are present in the technical product in a ratio of about 1∶ 3( The values of f syn which indicates the radio of two isomers is about 0. 41 in Chinese production). Because it releases into the environment easily when using or discarding its products,DP has become a widespread emerging pollutant. In this study,surface seawater,sediment and macroalgae were sampled from 6 sites in intertidal zone of Yellow Sea,Dalian,China. Both of syn and anti isomers of DP were measured. The results showed that both isomers were detected from all samples in intertidal zone of Dalian. The average concentrations of DP in surface seawater,sediment and macroalgae were( 1. 54 ±0. 73) ng/L,( 0.87 ±0. 18) ×10-9dry weight( dw),( 4. 84 ± 1. 25) × 10-9wet weight( ww),respectively. Significant linear correlation were observed between the DP concentrations of surface seawater and sediment( R = 0. 849,P = 0. 032 < 0. 05). The values of f syn in surface seawater,sediment and macroalgae were 0. 34 ± 0. 06,0. 51 ± 0. 03 and 0. 18 ± 0. 01,respectively. The macroalgae accumulated DP from both of seawater and sediment( BCF = 21 200 ± 12 300 and BSAF = 5. 93 ± 1. 46). And the anti isomer is preferential enrichment in macroalgae.
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