Geometry and water quality of the unconfined aquifer near the Piracicaba river, Ipatinga/MG, Brazil

Oliveira, Débora Almeida de; Galvão, Paulo

doi:10.1016/j.hydres.2019.11.003

Cited by 3 publications

(8 citation statements)

References 8 publications

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“…However, regarding shallow and deep wells, less than 30% were classified as acceptable to human consumption, according Brazilian and WHO guidelines (Brazil, 2021;WHO, 2017). The result is similar to other studies (Dragon 2021;Grumicker et al, 2018;Galvão, 2019).…”

Section: Water Qualitysupporting

confidence: 93%

“…For the nitrite variable, all the sampling points, independently of the water origin, were considered appropriate for human consumption, for the reason that they presented values lower than the MPV of Brazilian Guidelines (Brazil, 2021), which is of 1 mg L -1 of N-NO2-and WHO guidelines (WHO, 2017), which is of 3 mg L-1 of N-NO2-. Similar results were also found in literature (Carasek et al, 2020;Dragon, 2021;Grumicker et al, 2018;Galvão, 2019;Portal et al, 2019;).…”

Section: Water Qualitysupporting

confidence: 92%

“…For deep wells, there were samples with pH above 10, which is related to geologic characteristics of the aquifer (ABAS, 2020). Oliveira and Galvão (2019), in deep well waters, corroborate with the here presented study and indicated that pH values are in the neutral band and according to the current Brazilian and WHO guidelines (Ramos et al, 2018;Portal et al, 2019).…”

Section: Water Qualitysupporting

confidence: 91%

“…To fluoride ion, all sampling points, in the present study, independently of water origin, are framed as appropriate to human consumption (Brazil, 2021;WHO, 2017), collaborating with Dragon (2021) and Oliveira and Galvão (2019) and analogous to the work of Grumicker et al (2018).…”

Section: Water Qualitymentioning

confidence: 99%

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Water quality in individual groundwater supply systems in Southern Brazil

Schneider

Golombieski

Seben

et al. 2021

CeN

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This study aimed to evaluate the potability of drinking water in ten municipalities of Rio Grande do Sul State, Brazil, distributed in rural and urban areas, with three different sources: springs, shallow wells, and deep wells. The water quality parameters analyzed from 2017 to 2019 were: pH, temperature, apparent and true color, turbidity, electrical conductivity, total alkalinity, total hardness, nitrate, total phosphorus, total iron, fluoride, biochemical oxygen demand, total coliforms, and Escherichia coli. A macroscopic analysis was also conducted in the surrounding of sampling points. According to the Brazilian and the WHO (World Health Organization) guidelines, some of the analyzed variables, in some sampling points, were in disagreement with the current both guidelines, which are pH, apparent color, turbidity, total iron, total coliforms, and Escherichia coli. The surveillance showed that the deeper the water is abstracted the less are natural and anthropogenic interferences in physical, chemical, and microbiological characteristics of the water; and the protection of the location where the water is abstracted improves its quality. Nonetheless, for the sampled waters it is necessary a disinfection process for posterior human consumption.

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Section: Water Qualitysupporting

confidence: 93%

Section: Water Qualitysupporting

confidence: 92%

Section: Water Qualitysupporting

confidence: 91%

Section: Water Qualitymentioning

confidence: 99%

See 2 more Smart Citations

Water quality in individual groundwater supply systems in Southern Brazil

Schneider

Golombieski

Seben

et al. 2021

CeN

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“…Being one of the main metals polluting the water, manganese occurs naturally in igneous, sedimentary, and metamorphic rocks, although it is also used in the manufacture of iron/steel alloys, batteries, glass, reworks, fertilizers, fungicides, varnishes, and animal supplementation (HSDB 2001; Mena 1980, Patil et al 2016. Due to its widespread use in the industry sector, manganese has been reported in the most varied water resources in Brazil and other countries in the range of mg L -1 (Bacquart et al 2015;Rietzler et al 2001;Kakkoi et al 2016;Krützmann et al 2020;Oliveira and Galvão 2019), mostly occurring in combination with carbonates, sulfates, chlorides, and phosphates, turning its detection di cult (Marsidi et al 2018).…”

Section: Read Full License Introductionmentioning

confidence: 99%

Evaluation of Reversal and Transposition Generational Damages Caused by Manganese (II) in Zebrafish

Rodrigues¹,

Santos²,

Finkler³

et al. 2021

Preprint

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Although manganese (Mn) is a common water pollutant, little is known about the potential for the trans-generational transfer of biological effects in fish exposed to low concentrations in aquatic organisms, or the persistence of these effects. The aim was to identify when biological effects were firstly observed in the brain, liver and intestinal tissues of zebrafish exposed to environmentally relevant concentrations of Mn and whether these effects were subject to reversal when exposures ceased. We also aimed to assess whether biological effects observed in zebrafish exposed to Mn for 21-days were also observed in the early life stages of the F1 generation. Behavioral changes were observed in the animals exposed for 14 days to MnCl 2 (4.0 mg L -1 ). There was also an oscillation in the mitochondrial activity and TUNEL positive cells in the telencephalon of exposed fish from all treatments. These results indicated that brain neurogenesis in zebrafish occurred with greater magnitude and speed than the neuronal Mn damage. Histopathological changes were observed in the intestine and liver of zebrafish exposed to Mn for 72 h and 21 days. Behavioral alterations and intestinal histopathological alterations were reversed after the recovery period, although hepatocyte vacuolization persisted. Behavioral alterations were also observed in the early developmental stages of F1 generation larvae of zebrafish parents exposed to Mn, but this profile was normalized throughout the development. In addition to the direct toxic effects of low concentrations of Mn, some changes, such as hepatocyte vacuolization persisted in zebrafish even after the toxicant removal.

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