Distribution, source, fate and bioaccumulation of methyl siloxanes in marine environment.
Studies have shown that some cyclic methyl siloxanes were identified as characterized of persistent, bioaccumulated, toxic, and potential to ecological harm. In this study, we determined methyl siloxanes in seawater, sediment and bottom fish samples collected from marine environment in Northeast China. The mean concentrations of total methyl siloxanes were 46.1 ± 27.2 ng/L, 12.4 ± 5.39 ng/g dry weight (dw) and 5.10 ± 1.34 wet weight (ww) in seawater, sediment and fish, respectively. Very strong and significant correlations (r = 0.94, p < 0.0001) were found in compositions of methyl siloxanes between seawater and sewage, indicating that sewage was the main source of methyl siloxanes in the marine area studied. It was found that the mean value of biota-sediment accumulation factor (BSAF) was.0.716 ± 0.456 for D4, 0.103 ± 0.0771 for D5, 1.06 ± 0.528 for D6 and 0.877 ± 0.530 for D7.
International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
Wen-Jun
WJ
Hong
International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China. Electronic address: jiahl@vip.qq.com.
Hongliang
H
Jia
Dalian Dongtai Organic Waste Treatment Company, Dalian 116035, China.
Cheng
C
Liu
IJRC-PTS, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
Zifeng
Z
Zhang
Institute of Environmental Systems Biology, Dalian Maritime University, Dalian 116026, China.
Yeqing
Y
Sun
IJRC-PTS, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China. Electronic address: ijrc_pts_paper@yahoo.com.
Yi-Fan
YF
Li
D000818:Animals; D002681:China; D005399:Fishes / Q000378:metabolism*; D019015:Geologic Sediments / Q000737:chemistry*; D012623:Seawater / Q000737:chemistry*; D012722:Sewage / Q000737:chemistry; D012833:Siloxanes / Q000032:analysis / Q000737:chemistry* / Q000493:pharmacokinetics; D014874:Water Pollutants, Chemical / Q000032:analysis
D012722:Sewage; D012833:Siloxanes; D014874:Water Pollutants, Chemical
BSAF; Fish; Methyl siloxanes; Seawater; Sediment