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Research article - Peer-reviewed, 2021

Identification of Pesticide Transformation Products in Surface Water Using Suspect Screening Combined with National Monitoring Data

Menger, Frank; Bostrom, Gustaf; Jonsson, Ove; Ahrens, Lutz; Wiberg, Karin; Kreuger, Jenny; Gago-Ferrero, Pablo

Abstract

Pesticides are widespread anthropogenic chemicals and well-known environmental contaminants of concern. Much less is known about transformation products (TPs) of pesticides and their presence in the environment. We developed a novel suspect screening approach for not well-explored pesticides (n = 16) and pesticide TPs (n = 242) by integrating knowledge from national monitoring with high-resolution mass spectrometry data. Weekly time-integrated samples were collected in two Swedish agricultural streams using the novel Time-Integrating, MicroFlow, In-line Extraction (TIMFIE) sampler. The integration of national monitoring data in the screening approach increased the number of prioritized compounds approximately twofold (from 23 to 42). Ultimately, 11 pesticide TPs were confirmed by reference standards and 12 TPs were considered tentatively identified with varying levels of confidence. Semiquantification of the newly confirmed TPs indicated higher concentrations than their corresponding parent pesticides in some cases, which highlights concerns related to (unknown) pesticide TPs in the environment. Some TPs were present in the environment without co-occurrence of their corresponding parent compounds, indicating higher persistency or mobility of the identified TPs. This study showcased the benefits of integrating monitoring knowledge in this type of studies, with advantages for suspect screening performance and the possibility to increase relevance of future monitoring programs.

Keywords

nontarget screening; high-resolution mass spectrometry (HRMS); accurate mass; metabolites; TIMFIE; prioritization strategy

Published in

Environmental Science and Technology
2021, volume: 55, number: 15, pages: 10343-10353
Publisher: AMER CHEMICAL SOC

Authors' information

Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Kreuger, Jenny
Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Gago-Ferrero, Pablo
CSIC - Instituto de Diagnostico Ambiental y Estudios del Agua (IDAEA)

Sustainable Development Goals

SDG12 Ensure sustainable consumption and production patterns

UKÄ Subject classification

Environmental Sciences

Publication Identifiers

DOI: https://doi.org/10.1021/acs.est.1c00466

URI (permanent link to this page)

https://res.slu.se/id/publ/113440