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Identification and Elimination of Fluorinated Methylsiloxanes in Environmental Matrices near a Manufacturing Plant in Eastern China
Zhi, Liqin; Xu, Lin; Qu, Yao; Zhang, Chunhui; Cao, Dong; Cai, Yaqi
2018-11-06
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume52Issue:21Pages:12235-12243
AbstractFluorinated methylsiloxanes are modified methylsiloxanes and include tris(trifluoropropyl)trimethylcyclotrisiloxane (D3F) and tetrakis(trifluoropropyl)tetramethylcyclotetrasiloxane (D4F). Here, we report fluorinated methylsiloxanes (D3F and D4F) in surface water and sediment samples collected near a fluorinated methylsiloxane manufacturing plant in Weihai, China. The concentrations of D3F and D4F in surface water ranged from 3.29-291 ng/L and from 7.02-168 ng/L, respectively. The concentrations of D3F and D4F in sediment ranged from 11.8-5478 ng/g and from 17.2-6277 ng/g, respectively. In simulation experiment, the half-lives of D3F and D4F at different pH values (5.2, 6.4, 7.2, 8.3, and 9.2) varied from 80.6-154 h and from 267-533 h, respectively. CF3(CH2)(2)MeSi(OH)(2) was identified as one of the main hydrolysis products of fluorinated methylsiloxanes. It was also detected in the river samples at concentrations of 72.1-182.9 ng/L. In addition, the slow rearrangement of D3F (spiked concentration = 500 ng/L) to D4F (concentration = 11.0-22.7 ng/L) was also found during 336h hydrolysis experiment.
Department环境化学与生态毒理学国家重点实验室
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/40963
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
GB/T 7714
Zhi, Liqin,Xu, Lin,Qu, Yao,et al. Identification and Elimination of Fluorinated Methylsiloxanes in Environmental Matrices near a Manufacturing Plant in Eastern China[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(21):12235-12243.
APA Zhi, Liqin,Xu, Lin,Qu, Yao,Zhang, Chunhui,Cao, Dong,&Cai, Yaqi.(2018).Identification and Elimination of Fluorinated Methylsiloxanes in Environmental Matrices near a Manufacturing Plant in Eastern China.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(21),12235-12243.
MLA Zhi, Liqin,et al."Identification and Elimination of Fluorinated Methylsiloxanes in Environmental Matrices near a Manufacturing Plant in Eastern China".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.21(2018):12235-12243.
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