Desenvolvimento De Metodologias Analíticas Para Determinação De Clorpirifós Em Amostras Aquosas Empregando a Microextração Líquido-Líquido Dispersiva Seguida Por HPLC-Uv

Oliveira, Adão S.; Honório, Leandro; Matos, Mayara L. de; Souza, João Batista

doi:10.21577/0100-4042.20170453

Cited by 2 publications

(2 citation statements)

References 25 publications

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“…In the rainy season, the chlorpyrifos pesticide was detected in R1 and R2. This substance is mainly applied to corn, soy and cotton crops, to combat various insect infestations, such as the cotton borer and aphid, cartridge caterpillar and soy caterpillar (Oliveira et al, 2020). Some studies have observed the presence of chlorpyrifos (38.94 µg L -1 ; 1.01 µg L -1 and 2.86 ng L -1 ) in river waters near crops (Oliveira et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…This substance is mainly applied to corn, soy and cotton crops, to combat various insect infestations, such as the cotton borer and aphid, cartridge caterpillar and soy caterpillar (Oliveira et al, 2020). Some studies have observed the presence of chlorpyrifos (38.94 µg L -1 ; 1.01 µg L -1 and 2.86 ng L -1 ) in river waters near crops (Oliveira et al, 2020). In Brazil, chlorpyriphos was already found in São Paulo, Mato Grosso, Rio Grande do Sul and Sergipe states (Albuquerque et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

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Pesticides and bacterial density - analysis of a dam situated in agricultural area

Dahroug

Braga²,

Dores³

et al. 2022

RSD

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The present study aimed to detect the types and concentration of pesticides in the surface water of a dam located in an agricultural region, and relate them to aquatic bacterial density. 1L of water were collected six times, three in the dry season (D1, D2 and D3) and three in the rainy season (R1, R2 and R3). The pesticide analysis was performed using CG/MS. The bacterial density was analyzed by means of CFU counting. The most abundant colonies that were cultivated in all studied samples were isolated and identified by molecular methods. The bacterial density had a significant difference between the rainy and dry seasons. In the dry season, the average bacterial density (5.69x105±2.86 x105 UFC mL-1) was higher than in the rainy season (2.31x105±1.73 x105 UFC mL-1). In the dry season, lambda cyhalothrin (0.3 µg L -1) and endrin (0.23 µg L -1) were found in D1 collection and endosulfan sulfate in D1 and D2 (0.05 - 0.27 µg L -1). In the rainy season, DEA (0.02 - 0.09 µg L-1) and atrazine (0.02 - 0.06 µg L -1) were detected in all collections, metalachlor (0.2 µg L -1), chlorpyrifos (0.2 µg L -1) in R1 and R2 and endosulfan sulfate (0.1 µg L -1) in R1. In the dry season, the bacterial density in R1 was significantly lower than R2 and R3. High correlation among those pesticides and the bacterial density was observed. Endrin, lambda cyhalothrin and endosulfan sulphate are toxic and persistent pesticides, and may therefore have influenced the decrease in aquatic bacterial density. Molecular analyzes identified the bacterium Bacillus weihenstephanensis, known to be present in environments contaminated by pesticides and for its biodegradable potential.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Pesticides and bacterial density - analysis of a dam situated in agricultural area

Dahroug

Braga²,

Dores³

et al. 2022

RSD

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Priority pesticides not covered by GM Ordinance of the Ministry of Health No. 888, of 2021, on water potability standard in Brazil

Deus

Brandt

Pereira

2021

Rev. Bras. Ciênc. Ambient.

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The intense use of pesticides can be harmful to the environment and human health, being necessary to monitor the environmental concentrations of pesticides. The legislation on drinking water for human consumption is one of the guiding regulations about monitoring priority. Therefore, a systematic review was carried out to compile information on the contamination of surface water, groundwater, and treated water in Brazil. Thereby, we selected those pesticides which, although they are authorized for use and are among the top-selling pesticides, are not regulated by GM Ordinance of the Ministry of Health (GM/MS) No. 888, of May 4, 2021. The databases used were PubMed, Scielo, Science Direct, Scopus, and Web of Science. Of the 122 pesticides in the market, 11 were selected. Analyses of environmental dynamics, concentration, and health effects were carried out. The Goss methodology and the Groundwater Ubiquity Score (GUS) index were used to estimate the risk of surface water and groundwater contamination, respectively. The concentrations found were compared with the values provided for in the guidelines adopted by international agencies, determining the Brazilian population’s margin of exposure (MOE) to the target pesticides. The results indicate a high probability of finding imidacloprid and hexazinone in the water, the prevalence of studies on surface waters, and the need to conduct additional studies as papers on some of the target pesticides were not found. It is concluded that the pesticides studied pose a low risk to human health, however, further studies are still required.

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Desenvolvimento De Metodologias Analíticas Para Determinação De Clorpirifós Em Amostras Aquosas Empregando a Microextração Líquido-Líquido Dispersiva Seguida Por HPLC-Uv

Cited by 2 publications

References 25 publications

Pesticides and bacterial density - analysis of a dam situated in agricultural area

Pesticides and bacterial density - analysis of a dam situated in agricultural area

Priority pesticides not covered by GM Ordinance of the Ministry of Health No. 888, of 2021, on water potability standard in Brazil

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