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Unraveling the chemodiversity of halogenated disinfection by-products formed during drinking water treatment using target and non-target screening tools
Inst Environm Assessment & Water Res IDAEA CSIC, Spain; Swedish Univ Agr Sci SLU, Sweden.
Linköping University, Department of Thematic Studies, Tema Environmental Change. Linköping University, Faculty of Arts and Sciences.ORCID iD: 0000-0002-7422-0853
Helmholtz Zentrum Munchen, Germany; Tech Univ Munich, Germany.
Linköping University, Department of Thematic Studies, Tema Environmental Change. Linköping University, Faculty of Arts and Sciences.ORCID iD: 0000-0003-0038-2152
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2021 (English)In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 401, article id 123681Article in journal (Refereed) Published
Abstract [en]

To date, there is no analytical approach available that allows the full identification and characterization of highly complex disinfection by-product (DBP) mixtures. This study aimed at investigating the chemodiversity of drinking water halogenated DBPs using diverse analytical tools: measurement of adsorbable organic halogen (AOX) and mass spectrometry (MS)-based target and non-target analytical workflows. Water was sampled before and after chemical disinfection (chlorine or chloramine) at four drinking water treatment plants in Sweden. The target analysis had the highest sensitivity, although it could only partially explain the AOX formed in the disinfected waters. Non-target Fourier transform ion cyclotron resonance (FT-ICR) MS analysis indicated that only up to 19 Cl and/or Br-CHO formulae were common to all disinfected waters. Unexpectedly, a high diversity of halogenated DBPs (presumed halogenated polyphenolic and highly unsaturated compounds) was found in chloraminated surface water, comparable to that found in chlorinated surface water. Overall, up to 86 DBPs (including isobaric species) were tentatively identified using liquid chromatography (LC)-Orbitrap MS. Although further work is needed to confirm their identity and assess their relevance in terms of toxicity, they can be used to design suspect lists to improve the characterization of disinfected water halogenated mixtures.

Place, publisher, year, edition, pages
ELSEVIER , 2021. Vol. 401, article id 123681
Keywords [en]
chemical mixtures; DBP structure elucidation; non-target mass spectrometry analysis; compound identification workflow; chemical disinfection of water
National Category
Water Treatment
Identifiers
URN: urn:nbn:se:liu:diva-173185DOI: 10.1016/j.jhazmat.2020.123681ISI: 000581684900152PubMedID: 33113720OAI: oai:DiVA.org:liu-173185DiVA, id: diva2:1527411
Note

Funding Agencies|Swedish University of Agricultural Sciences through the August T Larsson Guest Researcher Programme; Fundacion General del Consejo Superior de Investigaciones Cientificas (FGCSIC) through the 2nd edition of the ComFuturo Programme; Government of CataloniaGeneralitat de Catalunya [2017 SGR 01404]; Spanish Ministry of Science and InnovationSpanish Government [CEX2018-000794-S]; Swedish Research Council for Sustainable Development, FORMASSwedish Research Council Formas [2013-1077]

Available from: 2021-02-10 Created: 2021-02-10 Last updated: 2021-02-10

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