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DOI10.1021/es504347u
Decades-Scale Degradation of Commercial, Side-Chain, Fluorotelomer-Based Polymers in Soils and Water
Washington, John W.1; Jenkins, Thomas M.2; Rankin, Keegan3; Naile, Jonathan E.1
发表日期2015-01-20
ISSN0013-936X
卷号49期号:2页码:915-923
英文摘要

Fluorotelomer-based polymers (FTPs) are the primary product of the fluorotelomer industry. Here we report on a 376-day study of the degradability of two commercial acrylate-linked FTPs in four saturated soils and in water. Using an exhaustive serial extraction, we report GC/MS and LC/MS/MS results for 50 species including fluorotelomer alcohols and acids, and perfluorocarboxylates. Modeling of seven sampling rounds, each consisting of >= 5 replicate microcosm treatments, for one commercial FTP in one soil yielded half-life estimates of 65-112 years and, when the other commercial FTP and soils were evaluated, the estimated half-lives ranged from 33 to 112 years. Experimental controls, consisting of commercial FTP in water, degraded roughly at the same rate as in soil. A follow-up experiment, with commercial FTP in pH 10 water, degraded roughly 10-fold faster than the circum-neutral control suggesting that commercial FTPs can undergo OH-mediated hydrolysis. 8:2Fluorotelomer alcohol generated from FTP degradation in soil was more stable than without FTP present suggesting a clathrate guest-host association with the FTP. To our knowledge, these are the only degradability-test results for commercial FTPs that have been generated using exhaustive extraction procedures. They unambiguously show that commercial FTPs, the primary product of the fluorotelomer industry, are a source of fluorotelomer and perfluorinated compounds to the environment.


语种英语
WOS记录号WOS:000348332400028
来源期刊ENVIRONMENTAL SCIENCE & TECHNOLOGY
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/58607
作者单位1.US EPA, Natl Exposure Res Lab, Athens, GA 30605 USA;
2.Senior Environm Employment Program, Athens, GA 30605 USA;
3.Univ Toronto, Dept Chem, Toronto, ON 141119, Canada
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Washington, John W.,Jenkins, Thomas M.,Rankin, Keegan,et al. Decades-Scale Degradation of Commercial, Side-Chain, Fluorotelomer-Based Polymers in Soils and Water[J]. 美国环保署,2015,49(2):915-923.
APA Washington, John W.,Jenkins, Thomas M.,Rankin, Keegan,&Naile, Jonathan E..(2015).Decades-Scale Degradation of Commercial, Side-Chain, Fluorotelomer-Based Polymers in Soils and Water.ENVIRONMENTAL SCIENCE & TECHNOLOGY,49(2),915-923.
MLA Washington, John W.,et al."Decades-Scale Degradation of Commercial, Side-Chain, Fluorotelomer-Based Polymers in Soils and Water".ENVIRONMENTAL SCIENCE & TECHNOLOGY 49.2(2015):915-923.
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