Organic Microcontaminants in Tomato Crops Irrigated with Reclaimed Water Grown under Field Conditions: Occurrence, Uptake, and Health Risk Assessment

Ana B. Martínez-Piernas, Patricia Plaza-Bolaños, Pilar Fernández-Ibáñez, Ana Agüera

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    Abstract

    In many regions, reuse of reclaimed water (RW) is a necessity for irrigation. The presence of organic microcontaminants (OMCs) in RW and their translocation to plants may represent a risk of human exposure. Nevertheless, information available about real field crops is scarce and focused on a limited number of compounds. The novelty of this work relies on the application of a wider-scope analytical approach based on a multianalyte target analysis (60 compounds) and a suspect screening (>1300 compounds). This methodology was applied to real field-grown tomato crops irrigated with RW. The study revealed the presence of 17 OMCs in leaves (0.04-32 ng g-1) and 8 in fruits (0.01-1.1 ng g-1), 5 of them not reported before in real field samples. A health-risk assessment, based on the toxicological threshold concern (TTC) concept, showed that RW irrigation applied under the conditions given does not pose any threat to humans.

    Original languageEnglish
    Pages (from-to)6930-6939
    JournalJournal of Agricultural and Food Chemistry
    Volume67
    Issue number25
    DOIs
    Publication statusPublished - 26 Jun 2019

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    Keywords

    • health risk assessment
    • LC-MS target/suspect analysis
    • organic microcontaminants
    • plant uptake
    • reclaimed water reuse

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