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首页> 外文期刊>Journal of mass spectrometry: JMS >Liquid chromatography-tandem mass spectrometry and passive sampling: powerful tools for the determination of emerging pollutants in water for human consumption
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Liquid chromatography-tandem mass spectrometry and passive sampling: powerful tools for the determination of emerging pollutants in water for human consumption

机译：液相色谱-串联质谱和被动采样：确定人类食用水中新兴污染物的有力工具

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Among the wide range of emerging pollutants, perfluorinated compounds and various pharmaceuticals, such as nonsteroidal anti-inflammatory drugs, are showing growing concern. These contaminants can be found in freshwater ecosystems because of their incomplete removal during wastewater treatments so, their water solubility and poor degradability result in their continuous discharge and pseudo-persistent contamination. Usually, expected levels of these analytes are particularly low; therefore, sensitive and selective analytical techniques are required for their determination. Moreover, sampling and preconcentration are fundamental steps to reach the low detection limits required. The polar organic chemical integrative sampler (POCIS) represents a modern sampling approach that allows the in-situ preconcentration of ultra-trace pollutants. In this work, a fast liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) method was developed for the determination of diclofenac, ketoprofen, mefenamic acid, naproxen, ibuprofen, perfluorooctanoic acid, perfluorooctanesulfonate and caffeine in water for human consumption. The chromatographic separation of analytes was achieved in less than 6min. Quantitative analysis was performed in multiple reaction monitoring mode using ketoprofen-d3 as internal standard. Two different sites of Northern Italy were studied deploying POCIS for four weeks in both inlet and outlet of two drinking water treatment plants. The evaluation of time-weighted average concentration of contaminants was accomplished after the calibration of POCIS; to this aim, the sampling rate values for each compound were obtained by means of a simple calibration system developed in our laboratory. Ketoprofen, perfluorooctane sulfonate, perfluorooctanoate and caffeine were measured in both sites at the ngl(-1) level. Copyright (c) 2016 John Wiley & Sons, Ltd.
机译：在各种各样的新兴污染物中，全氟化化合物和各种药物（例如非甾体类抗炎药）受到越来越多的关注。这些污染物由于在废水处理过程中不能完全去除而在淡水生态系统中发现，因此，它们的水溶性和可降解性差，导致它们持续排放和伪持久污染。通常，这些分析物的预期含量特别低;因此，需要灵敏和选择性的分析技术来确定它们。此外，采样和预浓缩是达到所需低检测限的基本步骤。极性有机化学综合采样器（POCIS）代表了一种现代的采样方法，可以对超痕量污染物进行原位富集。在这项工作中，开发了一种快速液相色谱-电喷雾电离串联质谱（LC-ESI-MS / MS）方法，用于测定水中的双氯芬酸，酮洛芬，甲芬那酸，萘普生，布洛芬，全氟辛酸，全氟辛烷磺酸和咖啡因供人类食用。在不到6分钟的时间内完成了分析物的色谱分离。以酮洛芬-d3为内标，以多反应监测模式进行定量分析。研究了意大利北部的两个不同地点，在两个饮用水处理厂的进水口和出水口部署POCIS四个星期。在校正POCIS之后，完成了污染物的时间加权平均浓度的评估。为此，通过我们实验室开发的简单校准系统获得每种化合物的采样率值。在两个位点（ngl（-1））处都测定了酮洛芬，全氟辛烷磺酸盐，全氟辛酸酯和咖啡因。版权所有（c）2016 John Wiley＆Sons，Ltd.

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