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Eco-friendly LC–MS/MS method for analysis of multi-class micropollutants in tap, fountain, and well water from northern Portugal

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Abstract

Organic micropollutants present in drinking water (DW) may cause adverse effects for public health, and so reliable analytical methods are required to detect these pollutants at trace levels in DW. This work describes the first green analytical methodology for multi-class determination of 21 pollutants in DW: seven pesticides, an industrial compound, 12 pharmaceuticals, and a metabolite (some included in Directive 2013/39/EU or Decision 2015/495/EU). A solid-phase extraction procedure followed by ultra-high-performance liquid chromatography coupled to tandem mass spectrometry (offline SPE–UHPLC–MS/MS) method was optimized using eco-friendly solvents, achieving detection limits below 0.20 ng L−1. The validated analytical method was successfully applied to DW samples from different sources (tap, fountain, and well waters) from different locations in the north of Portugal, as well as before and after bench-scale UV and ozonation experiments in spiked tap water samples. Thirteen compounds were detected, many of them not regulated yet, in the following order of frequency: diclofenac > norfluoxetine > atrazine > simazine > warfarin > metoprolol > alachlor > chlorfenvinphos > trimethoprim > clarithromycin ≈ carbamazepine ≈ PFOS > citalopram. Hazard quotients were also estimated for the quantified substances and suggested no adverse effects to humans.

Occurrence and removal of multi-class micropollutants in drinking water, analyzed by an eco-friendly LC–MS/MS method

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Acknowledgments

Financial support for this work was provided by project NORTE-07-0202-FEDER-038900 (NEPCAT), financed by Fundo Europeu de Desenvolvimento Regional (FEDER) through ON2 (Programa Operacional do Norte) and Quadro de Referência Estratégica Nacional (QREN). This work was co-financed by QREN, ON2 and FEDER, under Programme COMPETE (Projects NORTE-07-0124-FEDER-000015 and NORTE-07-0162-FEDER-000050) and by Fundação para a Ciência e a Tecnologia (FCT) and FEDER through COMPETE 2020 (Project UID/EQU/50020/2013 - POCI-01-0145-FEDER-006984). MOB acknowledges the research grant from project “AIProcMat@N2020 - Advanced Industrial Processes and Materials for a Sustainable Northern Region of Portugal 2020”, with the reference NORTE-01-0145-FEDER-000006, supported by Norte Portugal Regional Operational Programme (NORTE 2020), under the Portugal 2020 Partnership Agreement, through the European Regional Development Fund (ERDF) and of Project POCI-01-0145-FEDER-006984 – Associate Laboratory LSRE-LCM funded by ERDF throug COMPETE2020 - Programa Operacional Competitividade e Internacionalização (POCI) – and by national funds through FCT. ARR and AMTS acknowledge respectively the research grant from FCT (Ref. SFRH/BPD/101703/2014) and the FCT Investigator 2013 Programme (IF/01501/2013), with financing from the European Social Fund and the Human Potential Operational Programme.

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Barbosa, M.O., Ribeiro, A.R., Pereira, M.F.R. et al. Eco-friendly LC–MS/MS method for analysis of multi-class micropollutants in tap, fountain, and well water from northern Portugal. Anal Bioanal Chem 408, 8355–8367 (2016). https://doi.org/10.1007/s00216-016-9952-7

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