Discovery of novel per- and polyfluoroalkyl substances (PFASs) at a fire fighting training ground and preliminary investigation of their fate and mobility
Discovery of novel per- and polyfluoroalkyl substances (PFASs) at a fire fighting training ground and preliminary investigation of their fate and mobility
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DOI：
10.1016/j.chemosphere.2017.06.096
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发表时间：
2017-10-01
期刊：
影响因子：
8.8
通讯作者：
Gomez-Ramos, Maria-Jose
中科院分区：
文献类型：
--
作者：
Baduel, Christine;Mueller, Jochen F.;Gomez-Ramos, Maria-Jose
几十年来，消防训练设施一直在释放水成膜泡沫，导致土壤和地下水受到全氟烷基和多氟烷基物质的污染。AFFF成分是专有的，可能含有广泛的PFAS，其化学结构和降解产物未知。在这项研究中，高分辨率四极杆飞行时间串联质谱（LC-QTOF-MS/MS）结合使用过滤策略的数据处理，应用于表征和阐明PFASs存在于收集在消防训练场后，历史上使用各种AFFF配方的混凝土提取物。在混凝土提取物中检测并鉴定了12种不同的含氟化合物类别，代表60多种化学品。在火灾训练场附近采集的土壤样品中检测到了新的PFASs同系物，如氯化PFSAs，酮PFSAs，二氯化PFSAs和全氟烷基磺酰胺（FASAs）。它们在土芯（从0到2米）中的检测提供了对这些新发现的PFAS潜在流动性的了解。(c)2017爱思唯尔有限公司版权所有
Aqueous film forming foams (AFFFs) have been released at fire training facilities for several decades resulting in the contamination of soil and groundwater by per- and polyfluoroalkyl substances (PFASs). AFFF compositions are proprietary and may contain a broad range of PFASs for which the chemical structures and degradation products are not known. In this study, high resolution quadrupole-time-of flight tandem mass spectrometry (LC-QTOF-MS/MS) in combination with data processing using filtering strategies was applied to characterize and elucidate the PFASs present in concrete extracts collected at a fire training ground after the historical use of various AFFF formulations. Twelve different fluorochemical classes, representing more than 60 chemicals, were detected and identified in the concrete extracts. Novel PFASs homologues, unmonitored before in environmental samples such as chlorinated PFSAs, ketone PFSAs, dichlorinated PFSAs and perfluoroalkane sulphonamides (FASAs) were detected in soil samples collected in the vicinity of the fire training ground. Their detection in the soil cores (from 0 to 2 m) give an insight on the potential mobility of these newly identified PFASs. (c) 2017 Elsevier Ltd. All rights reserved.