环形全氟磺酸类化合物作为一类新型全氟化合物,因其独特的结构和物理化学性质被主要应用在航空液压油中。1但是目前作为环境中有机氟化合物的来源之一,对该类全氟化合物所开展的研究较少。本文以北京首都国际机场周边环境采集的河水、底泥和生物样品为研究对象,首次利用液相色谱与高分辨质谱联用技术在样品中检测到了全氟四乙基环己烷磺酸(PFECHS)及其同分
异构体全氟丙基环戊烷磺酸(PFPCPS)的存在。其中,环形全氟化合物在水(1.06-330 ng/L)和底泥(
The use of cyclic perfluoroalkyl acids as anticorrosive agents in hydraulic fluids remains a poorly characterized source of organofluorine compounds to the environment.Here,we investigated the presence of perfluoroethylene cyclohexane sulfonate(PFECHS) isomers in environmental samples for the first time using a combination of high resolution and tandem mass spectrometry.PFECHS and the most abundant isomer,perfluoropropylcyclopentane sulfonate(PFPCPS),displayed logarithmically decreasing spatial trends in water(1.06-330 ng/L) and sediment samples(
引文
[1]De Silva,A.O.;Spencer,C.;Scott,B.F.;Backus,S.;Muir,D.C.G.Environ.Sci.Technol.2011,45:8060.