Distribution, source, fate and bioaccumulation of methyl siloxanes in marine environment
2014; Elsevier BV; Volume: 191; Linguagem: Inglês
10.1016/j.envpol.2014.04.033
ISSN1873-6424
AutoresWen-Jun Hong, Hongliang Jia, Cheng Liu, Zi-Feng Zhang, Yeqing Sun, Yi-Fan Li,
Tópico(s)Microplastics and Plastic Pollution
ResumoStudies 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.
Referência(s)