文章基本信息

标题：Combustion ion chromatography for extractable organofluorine analysis
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作者：Rudolf Aro ; Ulrika Eriksson ; Anna Kärrman 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：9
页码：1-16
DOI：10.1016/j.isci.2021.102968
语种：English
出版社：Elsevier
摘要：SummaryCombustion ion chromatography (CIC) has found a role in environmental analytical chemistry for fluorine content analysis. It is used for extractable organofluorine (EOF) analysis to evaluate perfluoroalkyl and polyfluoroalkyl substances (PFASs) and other organofluorine burden. The prevailing assumption has been that all PFASs are incinerated in CIC and matrix components have no impact on this process, but this has not been experimentally evaluated. In this work, the combustion efficiencies of 13 different PFASs were determined (66–110%). A notable difference was observed between calibrating the CIC with inorganic fluorine or organofluorine. Potential interferences from cations and coextracted matrix components from whole blood and surface water samples were evaluated. These observations should be acknowledged when performing EOF analysis using CIC, overlooking either non-100% combustion efficiencies or the differences in calibrating the CIC with inorganic fluorine or organofluorine could lead to underestimating EOF content and through that to misguide policy decisions.Graphical abstractDisplay OmittedHighlights•Combustion efficiencies of PFASs were in the range of 66–110%•There was difference between calibration with inorganic fluorine and organofluorine•Matrix had no discernable effect on combustion efficiencyAnalytical chemistry; Geochemistry methods; Environmental chemistry; Environmental monitoring