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Journal ArticleDOI

Pesticides in Brazilian freshwaters: a critical review.

TLDR
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.
Abstract
The widespread use of pesticides in agriculture can lead to water contamination and cause adverse effects on non-target organisms. Brazil has been the world's top pesticide market consumer since 2008, with 381 approved pesticides for crop use. This study provides a comprehensive literature review on the occurrence of pesticide residues in Brazilian freshwaters. We searched for information in official agency records and peer-reviewed scientific literature. Risk quotients were calculated to assess the potential risk posed to aquatic life by the individual pesticides based on their levels of water contamination. Studies about the occurrence of pesticides in freshwaters in Brazil are scarce and concentrated in few sampling sites in 5 of the 27 states. Herbicides (21) accounted for the majority of the substances investigated, followed by fungicides (11), insecticides (10) and plant growth regulators (1). Insecticides are the class of major concern. Brazil would benefit from the implementation of a nationwide pesticide freshwater monitoring program to support preventive, remediation and enforcement actions.

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Journal ArticleDOI

Multiscale land use impacts on water quality: Assessment, planning, and future perspectives in Brazil.

TL;DR: An overview of the relationships between LULC and water quality in Brazil is provided, aiming at understanding the effects of different LULC types on water quality, how spatial and temporal scales contribute to these effects, and how such knowledge can improve watershed management and future projections.
Journal ArticleDOI

DNA damage and oxidative stress induced by imidacloprid exposure in different tissues of the Neotropical fish Prochilodus lineatus.

TL;DR: The results highlight the importance of investigating different target tissues after IMI Exposure and show the sublethal effects of IMI in some of them; they also warn to the possible consequences that fish living in freshwater ecosystems can suffer due to IMI exposure.
Journal ArticleDOI

Agrotóxicos e seus impactos na saúde humana e ambiental: uma revisão sistemática

TL;DR: Uma revisão sistemática de estudos sobre os efeitos da exposição crônica e simultânea a diversos agrotóxicos acerca desse tema em bases of dados científicos foi realizada no período de 2011 a 2017.
Journal ArticleDOI

Occurrence and treatment of contaminants of emerging concern in the African aquatic environment: Literature review and a look ahead

TL;DR: A comprehensive review is presented on the occurrence of CECs in wastewater, sludge, surface water, sediment, groundwater and drinking water of Africa and the state of knowledge on the performance of point-of-use technologies (POUs) regarding the removal of C ECs in drinking water.
References
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Journal ArticleDOI

Environmental risk assessment of pharmaceutical residues in wastewater effluents, surface waters and sediments.

TL;DR: RQ was applied as a novel approach to estimate the environmental risk of pharmaceuticals that are most frequently detected in wastewater effluents, surface waters and sediments and its continuous introduction in the environment may make them "pseudopersistents".
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Toxic and genotoxic evaluation of six antibiotics on non-target organisms

TL;DR: The macrolides were found to be the most harmful for the aquatic environment and the environmental risk was calculated by MEC/PNEC ratio using the available data from the literature regarding their occurrence in the aquatic environments and the toxicity data obtained from the bioassays performed.
Journal ArticleDOI

Organic chemicals jeopardize the health of freshwater ecosystems on the continental scale

TL;DR: It is provided strong evidence that chemicals threaten the ecological integrity and consequently the biodiversity of almost half of the water bodies on a continental scale, based on the analysis of governmental monitoring data from 4,000 European sites.
Journal ArticleDOI

Agricultural insecticides threaten surface waters at the global scale.

TL;DR: The data show that more than 50% of detected insecticide concentrations exceed regulatory threshold levels, which indicates that surface water pollution resulting from current agricultural insecticide use constitutes an excessive threat to aquatic biodiversity and suggests the biological integrity of global water resources is at a substantial risk.
Journal ArticleDOI

The status of pesticide pollution in surface waters (rivers and lakes) of Greece. Part I. Review on occurrence and levels.

TL;DR: This review evaluates and summarizes the results of long-term research projects, monitoring programs and published papers concerning the pollution of surface waters (rivers and lakes) of Greece by pesticides.
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