Evaluation of occurrence of NO3–, Coliform and atrazine in a karst aquifer, Colombo, PR

Schleder, Aluana Ariane; Vargas, Lucília Maria Parron; Hansel, F. A.; Froehner, Sandro; Palagano, Leonardo Tozini; Filho, Ernani Francisco da Rosa

doi:10.1590/2318-0331.0117160452

Cited by 9 publications

(8 citation statements)

References 35 publications

(38 reference statements)

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“…Rheinheimer et al [28] showed results obtained from groundwater in the Brazilian state of Rio Grande do Sul, had higher concentrations of nitrate, but none exceeding 22 mg L −1 of NO 3 − (5 mg L −1 of N-NO 3 − ). Higher values of nitrate found in shallow wells of Paraná state had maximum of 40.22 mg L −1 of NO 3 − [29].…”

Section: Resultsmentioning

confidence: 82%

An integrated assessment of water quality in a land reform settlement in northern Rio de Janeiro state, Brazil

Portal

Pedlowski

Almeida

et al. 2019

Heliyon

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The Zumbi dos Palmares land reform settlement lacks modern facilities for water and sewage treatment. Local farmers often use shallow wells as alternative source of water supply, because the water table is reasonably high in the region. This work presents a multivariate analysis assessment of physicochemical and bacteriological parameters and pesticide residues in water samples collected from these shallow wells. The physicochemical parameters analyzed were: conductivity, pH, DOC (dissolved organic carbon), nitrate, turbidity, and bacteriological analysis measuring total and fecal coliforms. The results show non-compliance with Brazilian legal standards in most samples where low pH values were found, characterizing the presence of acidic waters. Another example of non-compliance is the presence of total and fecal coliforms in for drinking water in most of the samples and, in some cases, very high values (2,400 CFU). Some wells showed high conductivity values, probably associated with a history of oceanic intrusion. Analyses determining the contamination by pesticides show the presence of ametrine, atrazine, methyl parathion, carbaryl and hexazinone. The concentration for these compounds ranged from 0.14 to 1.17 μg/L. Ordinance No 2914/2011 from the Brazilian Ministry of Health establishes the acceptable limits for atrazine and methyl parathion as 9 μg L −1 and 2 μg L −1 . None of these exceeded the allowable Brazilian and European limits. However, for the other two pesticides, the European Legislation (Council Directive) recommends the maximum allowable concentration of 0.1 μg L −1 and, 0.5 μg L −1 for total pesticides. Our samples that were above the quantifiable limit of 50 ng L −1 , were also above the European limit values. Our results therefore suggest that water gathered from shallow wells at the Zumbi dos Palmares settlement is not proper for consumption without proper disinfection treatments.

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Section: Resultsmentioning

confidence: 82%

An integrated assessment of water quality in a land reform settlement in northern Rio de Janeiro state, Brazil

Portal

Pedlowski

Almeida

et al. 2019

Heliyon

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“…Many studies have reported concerning herbicide concentrations in aquatic environments [1,2,[8][9][10][11][12][13][14][15] , especially in groundwater, since it is often a direct source of potable water. Groundwater is mainly recharged by rainfall and is an important source of surface water, which moves and spreads along the flow paths of springs, streams, marshes, lakes and ponds.…”

Section: Introductionmentioning

confidence: 99%

Detection of herbicides in water bodies of the Samambaia River sub-basin in the Federal District and eastern Goiás

Correia

Carbonari

Velini

2020

Journal of Environmental Science and Health, Part B

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The objective of this study was to identify and quantify herbicide residues in water samples of rain, cisterns, streams, ponds, springs, semi-artesian wells, dams and a river in the Rio Samambaia sub-basin in the Federal District and eastern Goi as. A total of 287 samples were collected from 20 farms in the sub-basin in the rainy (February, summer) and dry (August, winter) seasons in 2016. Aminomethylphosphonic acid (AMPA, a glyphosate metabolite), clethodim, chlorimuron-ethyl, diuron, fluazifop acid (a fluazifop-p-butyl metabolite and the active ingredient), haloxyfop acid (a haloxyfop-methyl metabolite and the active ingredient), imazamox, mesotrione, metsulfuron, nicosulfuron and pendimethalin were not identified in any water sample. In the rainy season, approximately 99% of the samples contained residues at least one of the evaluated herbicides; in the dry season (, 100% of the samples contained residues of at least one of the evaluated herbicides. When considering only detection frequency, metribuzin, atrazine, clomazone and haloxyfop-methyl were the main herbicides found in the water of the Samambaia River sub-basin. In turn, based on levels higher than the limit of quantification, the main compounds detected were atrazine, clomazone, haloxyfop-methyl and glyphosate. In both seasons, the highest relative concentrations of herbicides for the rainy and dry seasons were found in spring water, 25% and 56%, respectively, and dam water, 23% and 16%, respectively.

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“…Scientific research has assessed the presence of pesticides in both surface water and underground water in Brazil (Possavatz et al, 2014;Schelder et al, 2017;Caldas et al, 2019;Guarda et al, 2020;De Deus et al, 2022). Some pesticides excluded from the official list of authorized products were also detected, such as the case of aldrin-dieldrin, chlordane and DDT, which have been forbidden in Brazil since 1985, due to their high carcinogenic potential (Oliveira & Furtado, 2010;Panis et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

A Comparison of Maximum Permissible Concentrations for Pesticides in Brazilian Water Supply

Leite,

Boulomytis,

Alberti

et al. 2023

Rural Sustainability Research

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Pesticides have been used for a long time in agriculture to prevent the growth of undesired organisms. However, depending on the type of production (i.e., conventional, organic, and regenerative), they might not be applied. Adequate types and uses of pesticides should not cause any damage to any non-target species or environments due to the exposure to it, especially if all farming operations have been done properly. Reversely, when pesticides are applied in inappropriate time, amount or technique, they may cause several impacts, among which is water contamination. Brazil stands out worldwide for its agricultural potential, but it is exposed to risks concerning the water supply security to its population. The current study is a comparison of the Maximum Permissible Concentrations (MPC) for pesticides in potable water supply in Brazil with the values set in the United States, Canada, European Union countries, Japan, and the guidelines issued by the World Health Organization. The regulations of each country were used, as well as the trading, consumption and agricultural production data. The Brazilian regulation is the one accounting for the largest number of pesticides. However, their MPC is 5,000 times more permissible than that from the European Union for the herbicide known as glyphosate, 300 times than that for 2,4-d and 20 times than that for atrazine. Finally, it was possible to observe the relevance of revising the regulation and public policies in place to minimize the indiscriminate use of pesticides in Brazil and adapt these compounds to the standards in a global level.

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Evaluation of occurrence of NO3–, Coliform and atrazine in a karst aquifer, Colombo, PR

Cited by 9 publications

References 35 publications

An integrated assessment of water quality in a land reform settlement in northern Rio de Janeiro state, Brazil

An integrated assessment of water quality in a land reform settlement in northern Rio de Janeiro state, Brazil

Detection of herbicides in water bodies of the Samambaia River sub-basin in the Federal District and eastern Goiás

A Comparison of Maximum Permissible Concentrations for Pesticides in Brazilian Water Supply

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