Division 1.1 - Inorganic Trace Analysis, Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Straße 11, 12489, Berlin, Germany.
Division 4.3 - Contaminant Transport and Environmental Technologies, Federal Institute for Materials Research and Testing (BAM), Unter den Eichen 87, 12205, Berlin, Germany.
Anal Bioanal Chem. 2021 Jan;413(1):103-115. doi: 10.1007/s00216-020-03010-y. Epub 2020 Nov 8.
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.
在这项研究中，我们比较了燃烧离子色谱法（CIC）和高分辨连续光源-石墨炉分子吸收光谱法（HR-CS-GFMAS），以确定它们在测定有机结合氟总和参数方面的适用性。在德国柏林的施普雷河（Spree）的样品中测量了可提取（EOF）和可吸附（AOF）有机结合氟以及总氟（TF），以揭示两种技术以及两种已建立的氟总和参数 AOF 和 EOF 的优缺点。通过 HR-CS-GFMAS 和 CIC 测定的 TF 浓度在 148 到 270μg/L 之间具有可比性。平均而言，AOF 浓度高于 EOF 浓度，AOF 占 TF（用 CIC 测定）的 0.14-0.81％，EOF 占 TF（用 HR-CS-GFMAS 测定）的 0.04-0.28％。两种独立方法获得的结果非常吻合。结果表明，与 CIC 相比，HR-CS-GFMAS 是一种更灵敏和精确的氟分析方法。EOF 和 AOF 是用于评估新兴污染物全氟和多氟烷基物质风险的等效工具；然而，EOF 的操作速度要快得多。
