Diagnóstico espaço-temporal da ocorrência de herbicidas nas águas superficiais e sedimentos do Rio Corumbataí e principais afluentes
Eduardo Dutra de Armas,Regina Teresa Rosim Monteiro,Paula Munhoz Antunes,Maria Alice,Penna Firme,Blotta Abakerli +5 more
TLDR
In this paper, residues of herbicides from sugarcane were monitored in waters and sediments of Corumbatai River and tributaries, with negligible levels of ametryne and glyphosate in sediment samples.Abstract:
SPATIAL-TEMPORAL DIAGNOSTIC OF HERBICIDE OCCURRENCE IN SURFACE WATERS AND SEDIMENTS OF CORUMBATAI RIVER AND MAIN AFFLUENTS. Residues of herbicides from sugarcane were monitored in waters and sediments of Corumbatai River and tributaries. Ametryne, atrazine, simazine, hexazinone, glyphosate, and clomazone were detected in water samples, with negligible levels of ametryne and glyphosate in sediment samples. The area of recharge of the Guarani aquifer presented the highest triazine and clomazone levels. The triazines were detected at higher levels, with atrazine above Brazil's potability and quality standards. Total herbicide levels at some sampling points were 13 times higher than the European Community potability limit. There is no Brazilian standard for ametryne, although the risk is larger due to ametryne's higher toxicity for the aquatic biota.read more
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Paraquat-loaded alginate/chitosan nanoparticles: preparation, characterization and soil sorption studies.
Mariana dos Santos Silva,Daniela Sgarbi Cocenza,Renato Grillo,Renato Grillo,Nathalie Ferreira Silva de Melo,Nathalie Ferreira Silva de Melo,Paulo Sergio Tonello,Luciana Camargo de Oliveira,Douglas Lopes Cassimiro,André Henrique Rosa,Leonardo Fernandes Fraceto,Leonardo Fernandes Fraceto +11 more
TL;DR: The results presented in this work show that association of paraquat with alginate/chitosan nanoparticles alters the release profile of the herbicide, as well as its interaction with the soil, indicating that this system could be an effective means of reducing negative impacts caused by paraquats.
Journal ArticleDOI
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
Controlled release system for ametryn using polymer microspheres: preparation, characterization and release kinetics in water.
Renato Grillo,Anderson do Espirito Santo Pereira,Nathalie Ferreira Silva de Melo,Nathalie Ferreira Silva de Melo,Raquel Martins Porto,L. O. Feitosa,Paulo Sergio Tonello,Newton Luiz Dias Filho,André Henrique Rosa,Renata de Lima,Leonardo Fernandes Fraceto,Leonardo Fernandes Fraceto +11 more
TL;DR: Results presented in this paper are promising, in view of the successful encapsulation of ametryn in PHB or PHBV polymer microparticles, and indications that this system may help reduce the impacts caused by the herbicide, making it an environmentally safer alternative.
Journal ArticleDOI
Subchronic exposure to atrazine induces biochemical and histopathological changes in the gills of a Neotropical freshwater fish, Prochilodus lineatus.
TL;DR: The persistence of atrazine in water (subchronic exposure) promoted an increase of LPO levels in the gills and increased the frequency and severity of histopathological changes, suggesting a mechanism to wash toxic substances away from the gill surface.
Journal ArticleDOI
Human health risk assessment and environmental distribution of trace elements, glyphosate, fecal coliform and total coliform in atlantic rainforest mountain rivers (south America)
TL;DR: In this paper, the potential health risk of these trace elements, glyphosate and coliform to local population were assessed using ICP-MS, while the glyphosate was analyzed by HPLC.
References
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Dissertação de Mestrado
TL;DR: In this article, the response of WBC over their interactions with the corn of South America Margin was analyzed based upon bathymetry, in situ currents measurements, and simulations of oceanic currents using the CROCO model.
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TL;DR: In this article, the authors present a complete and authoritative volume on all key issues on the fate and behaviour of pesticides in water systems, including their application in ground, surface and drinking water.