Degradation of Fluorotelomer-Based Polymers Contributes to the Global   Occurrence of Fluorotelomer Alcohol and Perfluoroalkyl Carboxylates: A   Combined Dynamic Substance Flow and Environmental Fate Modeling Analysis

doi:10.1021/acs.est.6b04021

CORC > 北京大学 > 环境科学与工程学院

	Degradation of Fluorotelomer-Based Polymers Contributes to the Global Occurrence of Fluorotelomer Alcohol and Perfluoroalkyl Carboxylates: A Combined Dynamic Substance Flow and Environmental Fate Modeling Analysis
	Li, Li ; Liu, Jianguo ; Hu, Jianxin ; Wania, Frank
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2017
关键词	ACID PFCA HOMOLOGS POLYFLUOROALKYL SUBSTANCES PERFLUOROCARBOXYLIC ACIDS POLYFLUORINATED COMPOUNDS PERFLUORINATED CHEMICALS EMISSION INVENTORIES AEROBIC SOILS ARCTIC-OCEAN ATMOSPHERE AIR
DOI	10.1021/acs.est.6b04021
英文摘要	Using coupled dynamic substance flow and environmental fate models, CiP-CAFE and BETR-Global, we investigated whether the degradation of side-chain fluorotelomer-based polymers (FTPs), mostly in waste stocks (i.e., landfills and dumps), serves as a long-term source of fluorotelomer alcohols (FTOHs) and perfluoroalkyl carboxylates (PFCAs) to the global environment. The modeling results indicate "that, in the wake of the worldwide transition from long chain to short-chain products, in-use stocks of C8 FTPs will peak and" decline afterward, while the in-use stocks of C6 FTPs, and the waste stocks of both FTPs will generally grow. FTP degradation in waste stocks is making, an increasing contribution to FTOH generation, the bulk of which readily migrates from waste stocks and degrades into PFCAs in the environment; the remaining part of the generated FTOHs degrade in waste stocks, which makes those stocks reservoirs that slowly release PFCAs into the environment over the long run because of the low leaching rate and extreme persistence of PFCAs. Short-chain FTPs have higher relative release rates of PFCAs from waste stocks than long-chain ones. Estimates of in-use and waste stocks of FTPs were more sensitive to the selected lifespan of finished products, while those of the emissions of FTOHs and PFCAs were more sensitive to the degradation half-life of FTPs in waste stocks. Our preliminary calculations highlight the need for environmentally sound management of obsolete FTP-containing products into the foreseeable future.; National Natural Science Foundation of China [21577002]; China Scholarship Council; Shanghai Tongji Gao Tingyao Environmental Science and Technology Development Foundation; SCI(E); ARTICLE; 8; 4461-4470; 51
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/473955]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Li, Li,Liu, Jianguo,Hu, Jianxin,et al. Degradation of Fluorotelomer-Based Polymers Contributes to the Global Occurrence of Fluorotelomer Alcohol and Perfluoroalkyl Carboxylates: A Combined Dynamic Substance Flow and Environmental Fate Modeling Analysis[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017.
APA	Li, Li,Liu, Jianguo,Hu, Jianxin,&Wania, Frank.(2017).Degradation of Fluorotelomer-Based Polymers Contributes to the Global Occurrence of Fluorotelomer Alcohol and Perfluoroalkyl Carboxylates: A Combined Dynamic Substance Flow and Environmental Fate Modeling Analysis.ENVIRONMENTAL SCIENCE & TECHNOLOGY.
MLA	Li, Li,et al."Degradation of Fluorotelomer-Based Polymers Contributes to the Global Occurrence of Fluorotelomer Alcohol and Perfluoroalkyl Carboxylates: A Combined Dynamic Substance Flow and Environmental Fate Modeling Analysis".ENVIRONMENTAL SCIENCE & TECHNOLOGY (2017).