Multiresidue determination of herbicides in environmental waters from Primavera do Leste Region (Middle West of Brazil) by SPE-GC-NPD
Eliana Freire Gaspar de Carvalho Dores,Eliana Freire Gaspar de Carvalho Dores,Sandro Navickiene,Marcelo L. F. Cunha,Leandro Carbo,Maria Lúcia Ribeiro,Ermelinda M. De-Lamonica-Freire +6 more
TLDR
A study on the presence of herbicides, namely simazine, metribuzin, metolachlor, trifluralin, atrazine and two metabolites, deisopropylatrazine (DIA) and DEA, was performed in ground and surface waters from Primavera do Leste region, Mato Grosso state (Middle West of Brazil).Abstract:
A study on the presence of herbicides, namely simazine, metribuzin, metolachlor, trifluralin, atrazine and two metabolites, deisopropylatrazine (DIA) and deethylatrazine (DEA), was performed in ground and surface waters from Primavera do Leste region, Mato Grosso state (Middle West of Brazil). The analytical procedure was based on solid-phase extraction (SPE) with Sep-Pak C18 disposable cartridges and ethyl acetate for elution solvent. Residue levels were determined by gas chromatography with nitrogen-phosphorus detection. For most of the pesticides average recoveries at different fortification levels were >70% with relative standard deviation <19%. The recoveries of DIA and trifluralin in water were 25% and 56%, respectively, which were attributed to the incomplete retention of DIA and strong retention on the sorbing material and high volatility of trifluralin. Detection limits ranged from 0.023 to 0.088 µg L-1. This method was applied for the analysis of 5 superficial water samples and 28 groundwater samples, in places used for human consumption without previous treatment, collected in Primavera do Leste, Mato Grosso, Brazil. Results indicated that the highest level of contamination in a water sample was 1.732 µg L-1 for metolachlor, while metribuzin was the most frequently detected herbicide with maximum concentration of 0.351 µg L-1.read more
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Pesticides in Brazilian freshwaters: a critical review.
Anjaina Fernandes de Albuquerque,J. S. Ribeiro,Fábio Kummrow,Fábio Kummrow,António J.A. Nogueira,António J.A. Nogueira,Cassiana Carolina Montagner,Gisela de Aragão Umbuzeiro +7 more
TL;DR: In this article, a comprehensive literature review on the occurrence of pesticide residues in Brazilian freshwaters was provided, and risk quotients were calculated to assess the potential risk posed to aquatic life by the individual pesticides based on their levels of water contamination.
Journal ArticleDOI
Pesticide Behavior, Fate, and Effects in the Tropics: An Overview of the Current State of Knowledge
TL;DR: Improved understanding of the environmental fate, effects, and risks through studies presented in this special issue is crucial for minimizing the nontarget impacts of pesticides on biodiversity-rich tropical regions.
Journal ArticleDOI
Pesticide Levels in Ground and Surface Waters of Primavera do Leste Region, Mato Grosso, Brazil
Eliana Freire Gaspar de Carvalho Dores,Leandro Carbo,Maria Lúcia Ribeiro,Ermelinda M. De-Lamonica-Freire +3 more
TL;DR: It is deducted that the contamination of water resources is predominantly caused by non-point pollution of pesticides used in intensive cash-crop cultures of the Cerrado area, and a continuous monitoring of pesticide concentrations in water resources of this tropical region is necessary to detect the longer term contamination trends and developing health risks.
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Histopathological and biochemical changes in goldfish kidney due to exposure to the herbicide Sencor may be related to induction of oxidative stress.
Viktor V. Husak,Nadia M. Mosiichuk,Ivan V. Maksymiv,Iryna Y. Sluchyk,Janet M. Storey,Kenneth B. Storey,Volodymyr I. Lushchak +6 more
TL;DR: The data indicate that induction of oxidative stress is one of the mechanisms responsible for Sencor toxicity to fish.
Journal ArticleDOI
Assessment of ametryn contamination in river water, river sediment, and mollusk bivalves in São Paulo State, Brazil.
Analu Egydio Jacomini,Plínio Barbosa de Camargo,Wagner Eustáquio Paiva Avelar,Pierina Sueli Bonato +3 more
TL;DR: The observation of the aquatic environment through the analysis of these matrixes, water, sediment, and bivalves revealed the importance of the river sediment in the accumulation of the herbicide ametryn, which can contaminate the biota.
References
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Manual of pesticide residue analysis
Hans-Peter Thier,Hans Zenmer +1 more
TL;DR: Cleanup methods individual pesticide residue analytical methods multiple pesticide residues analytical methods for water multiple pesticides analytical methods using the AMD technique as discussed by the authors, which is a technique used in many of the above methods.