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DOI | 10.1021/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 |
ISSN | 0013-936X |
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 |
推荐引用方式 GB/T 7714 | 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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