期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 48, 期 20, 页码 11748-11759出版社
AMER CHEMICAL SOC
DOI: 10.1021/es503465b
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Volatile methylsiloxanes (VMS) enter the environment through industrial activities and the use of various consumer products. Reliable measurements of environmental partition properties for these compounds are critical for accurate prediction of their environmental fate, distribution, transport, exposure and potential effects. In this study, the measured partition properties including air/water (K-AW), octanol/water (K-OW), and octanol/air partitioning coefficients (K-OA), soil organic carbon/water distribution coefficient (K-OC), and biological medium/fluid partition coefficients, and their temperature dependence were critically reviewed. Based on these results, organosilicon compounds such as methylsiloxanes are expected to behave differently in the environment compared to conventional hydrophobic environmental contaminants, as a result of their inherent characteristics related to molecular size and capacity for different types of molecular interactions that control partitioning. The differences are critical and need to be taken into consideration in environmental exposure and risk analyses of these compounds.
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