Non-target Screening with High Resolution Mass Spectrometry for the Identification of Emerging Contaminants in Surface Waters and Wastewater Effluents

Masho Hilawie Belay, Dimitra Papagiannaki, Nuno P. F Gonçalves, MARCELLO MANFREDI, Aziz Assoumani5, Rita Binetti, Emilio MARENGO, Paola Calza, Elisa ROBOTTI

Risultato della ricerca: Contributo alla conferenzaContributo in Atti di Convegnopeer review

Abstract

Chemical contaminants in aquatic ecosystems have been an emerging concern, and our knowledge of the chemicals present is still limited. Non-target screening (NTS) based on high-resolution mass spectrometry (HRMS) has immense potential to help in overcoming these limitations. Here we used NTS analysis to screen contaminants of emerging concern (CECs) in the aquatic environment. The study was conducted as part of the H2020-MSCA-ITN-2017 project AQUAlity (Project No. 765860). In two campaigns, a total of 34 samples were collected from rivers, lakes, and industrial and municipal WWTP effluents in France, Greece, and Italy. Samples were extracted using solid phase extraction (SPE) with Oasis HLB (200 mg) and ENVI-Carb Plus (400 mg) cartridges. Each sampling site had three SPE-extracted blanks of ultrapure water. Samples were analyzed using an LC-HRMS system (Orbitrap or Q-TOF) and the acquired data were processed using vendor software, followed by MZmine 2 or MS-DIAL. Overall, 673 compounds were identified following the scheme proposed by Schymanski et al. [1] with HRMS databases such as ChemSpider and MassBank. The identified compounds were predominantly pharmaceuticals and personal care products (PPCPs) and pesticides, followed by food additives, human metabolites, and transformation products. Furthermore, 28 compounds were commonly found in both sampling campaigns, potentially indicating their spread in the environment. Information regarding the 673 identified compounds and LC-HRMS data have been deposited into the NORMAN database. This study demonstrated the potential of NTS based on HRMS in identifying CECs in aqueous systems. However, further research is needed to identify more of the unknown compounds that were detected. Finally, quantification and toxicological studies are required to evaluate the relevance and risk of the and newly identified compounds.
Lingua originaleInglese
Stato di pubblicazionePubblicato - 2022

Keywords

  • Emerging contaminants
  • HRMS
  • non-target analysis
  • water
  • wastewater

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