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首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >A validated analytical method for the determination of perfluorinated compounds in surface-, sea- and sewagewater using liquid chromatography coupled to time-of-flight mass spectrometry
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A validated analytical method for the determination of perfluorinated compounds in surface-, sea- and sewagewater using liquid chromatography coupled to time-of-flight mass spectrometry

机译：液相色谱-飞行时间质谱法测定地表，海水和污水中全氟化合物的有效分析方法

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摘要

Perfluorinated compounds (PFCs), which are extensively used in a wide variety of applications because of their specific surfactant properties, have recently appeared as an important new class of global environmental pollutants. Quantitative analysis of PFCs in aqueous matrices remains, however, a challenging task. During this study, a new analytical method for the determination of 14 PFCs in surface-, sewage- and seawater was developed and validated. The target analytes were extracted using solid-phase extraction followed by liquid chromatography coupled to a time-of-flight mass spectrometer (LC-ToF-MS). The use of very narrow mass tolerance windows (<10ppm) resulted in a highly selective MS-technique for the detection of PFCs in complex aqueous matrices. Validation of this analytical method in surface-, sewage- and seawater resulted in limits of quantification (LOQs) varying from 2 to 200ngL~(-1), satisfying recoveries (92-134%), and good linearity (R~2=0.99 for most analytes). Analysis of samples of the North Sea, the Scheldt estuary, and three harbours of the Belgian coastal region led to the detection of four different PFCs. Perfluorooctane sulfonate (PFOS) was found to be the most abundant PFC in levels up to 38.9ngL~(-1).
机译：由于其特殊的表面活性剂特性，全氟化化合物（PFC）广泛用于各种应用中，最近已成为一种重要的新型全球环境污染物。但是，定量分析水性基质中的PFC仍然是一项艰巨的任务。在这项研究中，开发并验证了测定地表，污水和海水中14种PFC的新分析方法。使用固相萃取，然后将液相色谱与飞行时间质谱仪（LC-ToF-MS）耦合，萃取目标分析物。使用非常窄的质量公差窗口（<10ppm）导致了对复杂水性基质中PFC的检测具有高度选择性的MS技术。对地表，污水和海水中这种分析方法的验证导致定量限（LOQ）从2到200ngL〜（-1）不等，回收率令人满意（92-134％），并且线性良好（R〜2 = 0.99）对于大多数分析物）。对北海，斯海尔德河口和比利时沿海地区的三个港口进行的样本分析导致检测到四种不同的全氟化碳。发现全氟辛烷磺酸盐（PFOS）是最丰富的PFC，含量高达38.9ngL〜（-1）。

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