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United States Department of Agriculture (USDA) 2021

AGROCHEMICAL IMPACTS ON HUMAN AND ENVIRONMENTAL HEALTH : MECHANISMS AND MITIGATION

Agrochemical Health Human Environment

United States Department of Agriculture (USDA) National Institute of Food and Agriculture

Titre : AGROCHEMICAL IMPACTS ON HUMAN AND ENVIRONMENTAL HEALTH : MECHANISMS AND MITIGATION

Identification : 1025376

Pays : Etats Unis

Durée : START : 01 JAN 2021 TERM : 31 DEC 2023

Résumé
Treated wastewater is being increasingly used to irrigate food crops in water-scarce regions. Crop plants can accumulate a wide variety of wastewater-derived organic contaminants. The bulk of prior research on the accumulation of wastewater-derived contaminants in food crops has focused on contaminants that enter wastewater treatment plants and are incompletely removed by conventional treatment processes. These compounds are generally present in low concentrations, far below known toxicological or therapeutic (in the case of pharmaceuticals) thresholds. This project focuses on a different category of chemicals present in wastewater treatment plant effluent used to irrigate crops : halogenated organic disinfection byproducts (DBPs). Halogenated DBPs are known to be produced when drinking water or reclaimed wastewater is disinfected with chlorine. Many halogenated DBPs are toxic (some are possible human carcinogens). The possibility that edible crop plants irrigated with disinfected reclaimed wastewater may accumulate halogenated DBPs warrants investigation. This project focuses on developing the analytical chemistry tools needed to assess this possibility. This project will enable future studies of the occurrence of halogenated DBPs in edible crops with the aim of assessing potential risks and informing decisions on treatment options for reclaimed wastewater.

Objectifs
Identify, develop, and validate analytical methods, bioassays and biomarkers. Characterize abiotic and biotic processes that influence the sources, fate, transport and transformations of agrochemicals in agricultural and natural ecosystems. Quantify and mitigate human and environmental impacts of agrochemicals.

Performing Institution : UNIV OF WISCONSIN
Investigator : Pedersen, J.

Présentation : USDA (NIFA)

Page publiée le 2 décembre 2021