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Title:Finding the most suitable PFASs sum parameter method – A comparison of AOF vs. EOF and CIC vs. HR-CS-GFMAS
Author(s):Gehrenkemper, Lennart
per- and polyfluoroalkyl substances
Abstract:Presented by: Lennart Gehrenkemper – PhD student at Federal Institute for Materials Research and Testing (BAM), Co-authors: Simon, Fabian; von der Au, Marcus; Meermann, Björn Abstract: Since it is unknown for many applications, which PFASs are used and how they enter the environment, target analysis-based methods reach their limits. The two most frequently used sum parameters are the adsorbable organically bound fluorine (AOF) and the extractable organically bound fluorine (EOF). Both can be quantified using either combustion ion chromatography (CIC) or high resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS). Here we provide an insight on the advantageous and disadvantageous of both sum parameters and both detection methods. Our study is based on the analysis of surface water samples. Next to total fluorine (TF) analysis, AOF and EOF were determined as well as CIC and HR-CS-GFMAS are compared and results are comparatively discussed. Fluorine mass balancing revealed that, the AOF/TF proportion was higher than the EOF/TF proportion. The AOF made up 0.14–0.81% of TF and the EOF 0.04–0.28% of TF. Although, organically bound fluorine represents only a small portion of TF, PFASs are of worldwide concern, because of their extreme persistence and their bioaccumulation potential. The EOF-HR-CS-GFMAS method turned out to be more precise and sensitive than the AOF-CIC method and is a promising tool for future monitoring studies/routine analysis of PFASs in the environment. Biography: Lennart Gehrenkemper is working as a PhD student at BAM Federal Institute for Materials Research in the division Inorganic Trace Analysis. He is focusing on the research field of fluorine trace analysis and especially on method development for PFASs quantification in water samples. In March 2020 graduated Chemistry at the University of Münster (Germany).
Issue Date:2021-04-28
Series/Report:2021 Emerging Contaminants in the Environment Conference (ECEC21)
Genre:Presentation / Lecture / Speech
Conference Paper / Presentation
Date Available in IDEALS:2021-04-23

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