Hong Wen-Jun, Jia Hongliang, Liu Cheng, Zhang Zifeng, Sun Yeqing, Li Yi-Fan
International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
Environ Pollut. 2014 Aug;191:175-81. doi: 10.1016/j.envpol.2014.04.033. Epub 2014 May 20.
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.
研究表明，一些环状甲基硅氧烷具有持久性、生物累积性、毒性以及对生态有害的特性。在本研究中，我们测定了从中国东北海洋环境采集的海水、沉积物和底层鱼类样本中的甲基硅氧烷。海水、沉积物和鱼类中总甲基硅氧烷的平均浓度分别为46.1±27.2纳克/升、12.4±5.39纳克/克干重和5.10±1.34纳克/克湿重。海水和污水中甲基硅氧烷的组成之间存在非常强且显著的相关性（r = 0.94，p < 0.0001），这表明污水是所研究海域甲基硅氧烷的主要来源。研究发现，D4的生物群 - 沉积物积累因子（BSAF）平均值为0.716±0.456，D5为0.103±0.0771，D6为1.06±0.528，D7为0.877±0.530。
