Determination of organically bound fluorine sum parameters in river water samples—comparison of combustion ion chromatography (CIC) and high resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS)

作者：Lennart Gehrenkemper, Fabian Simon, Philipp Roesch, Emily V. Fischer, Marcus von der Au, Jens Pfeifer, Antje Cossmer, Philipp Wittwer, Christian Vogel, Franz‐Georg Simon, Björn Meermann · 发表于：Analytical and Bioanalytical Chemistry · 年份：2020 · DOI：10.1007/s00216-020-03010-y · 被引用次数：59 · 研究领域：Per- and polyfluoroalkyl substances research、Toxic Organic Pollutants Impact、Atmospheric chemistry and aerosols

In this study, we compare combustion ion chromatography (CIC) and high resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS) with respect to their applicability for determining organically bound fluorine sum parameters. Extractable (EOF) and adsorbable (AOF) organically bound fluorine as well as total fluorine (TF) were measured in samples from river Spree in Berlin, Germany, to reveal the advantages and disadvantages of the two techniques used as well as the two established fluorine sum parameters AOF and EOF. TF concentrations determined via HR-CS-GFMAS and CIC were comparable between 148 and 270 μg/L. On average, AOF concentrations were higher than EOF concentrations, with AOF making up 0.14-0.81% of TF (determined using CIC) and EOF 0.04-0.28% of TF (determined using HR-CS-GFMAS). The results obtained by the two independent methods were in good agreement. It turned out that HR-CS-GFMAS is a more sensitive and precise method for fluorine analysis compared to CIC. EOF and AOF are comparable tools in risk evaluation for the emerging pollutants per- and polyfluorinated alkyl substances; however, EOF is much faster to conduct. Graphical abstract.