Natural background levels and validation of the assessment of intrinsic vulnerability to the contamination in the Carste Lagoa Santa Protection Unit, Minas Gerais, Brazil.

dc.contributor.authorCardoso, Frederico Aragão
dc.contributor.authorVelásquez, Leila Nunes Menegasse
dc.contributor.authorGalvão, Paulo Henrique Ferreira
dc.contributor.authorTayer, Thiaggo de Castro
dc.contributor.authorLucon, Thiago Nogueira
dc.contributor.authorAzevedo, Úrsula Ruchkys de
dc.date.accessioned2020-05-05T20:33:29Z
dc.date.available2020-05-05T20:33:29Z
dc.date.issued2020
dc.description.abstractThe contamination of karst aquifers by anthropogenic activities causes a major issue regarding environmental policies, since they present high sensitivity, influenced by unique features such as dolines, swallow holes, and conduits. This paper is focused on the Carste Lagoa Santa Protection Unit, MG, Brazil, and presents three main objectives: to determine the natural background levels of chloride, nitrate, sulfate, and phosphate; to indicate the locations where the concentrations of those parameters exceed the natural background levels in the existing vulnerability map and, finally, to determine the proportion of the areas (in percentage) where this surpassing occurs, according to the vulnerability classes (high, moderate and low). Results have shown values (90th percentile) of 2.4 mg/L, 1.0 mg/L, 5.3 mg/L, and 0.1 mg/L, for Cl−, NO3−, SO4−2, and PO4−3, respectively, indicating that for all four parameters, there were areas (mainly distributed within moderate vulnerability portions) where the values were surpassed, which suggests anthropogenic activity due to the presence of urban settlements and agricultural activities. Therefore, the proposal of natural background levels was essential to understand the hydrochemistry of the studied region.pt_BR
dc.identifier.citationCARDOSO, F. A. et al. Natural background levels and validation of the assessment of intrinsic vulnerability to the contamination in the Carste Lagoa Santa Protection Unit, Minas Gerais, Brazil. Environmental Earth Sciences, v. 79, n. 31, 2020. Disponível em: <https://link.springer.com/article/10.1007/s12665-019-8771-5>. Acesso em: 10 mar. 2020.pt_BR
dc.identifier.doihttps://doi.org/10.1007/s12665-019-8771-5pt_BR
dc.identifier.issn1866-6299
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/12153
dc.identifier.uri2https://link.springer.com/article/10.1007/s12665-019-8771-5pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectKarst aquiferpt_BR
dc.subjectGroundwater contaminationpt_BR
dc.titleNatural background levels and validation of the assessment of intrinsic vulnerability to the contamination in the Carste Lagoa Santa Protection Unit, Minas Gerais, Brazil.pt_BR
dc.typeArtigo publicado em periodicopt_BR

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