Daphne Heloísa de Freitas Muniz

Water Quality Indices for Irrigation and Drinking Water Supply: The Importance of Use-Specific Assessment

Daphne Heloísa de Freitas Muniz, Juaci Vitória Malaquias, Eduardo Cyrino Oliveira-Filho

Water quality indices are generally developed for specific water uses, but direct comparisons of indices designed for public water supply and irrigation using the same monitoring dataset remain limited. This study evaluated surface water quality in the Federal District (FD), Brazil, assessing …

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Short-Term Effects of Commercial Fire Retardants on Water Quality Parameters: A Laboratory-Scale Study

Darlan Quinta de Brito, Daphne Heloísa de Freitas Muniz, Flávia Nogueira de Sá, Carlos Henke de Oliveira et autres

This study evaluates the short-term effects of nine commercially available fire retardants (FRs) on water quality under controlled laboratory conditions. FRs were diluted to a 1:10 FR:water stock solution to approximate readily water-extractable fractions, and ion solubility was quantified together with key …

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Proposal for a Water Quality Index for Supplying Rural Communities in the Brazilian Federal District

Eduardo Cyrino Oliveira-Filho, Daphne Heloísa de Freitas Muniz, Juaci Vitória Malaquias

The environmental characterization of a given region is fundamental for decision-making by public administrators and, consequently, for sustainable development. Regarding water quality, establishing the use of this resource is a priority, as specific parameters must be defined for each type of usage, …

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Pesticides in Ground and Surface Water from the Rio Preto Hydrographic Basin, an Important Agricultural Area in the Midwestern Region of Brazil

Nayara Luiz Pires, Esmeralda Pereira de Araújo, Daphne Heloísa de Freitas Muniz, Eduardo Cyrino Oliveira-Filho et autres

The use of pesticides in agriculture can leave residues in the treated crops. Pesticides are also potential contaminants of ground and surface water, as reported in many countries. The development of efficient analytical methods to quantify pesticides in water samples is a …

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Groundwater Quality in The Region That Hosted the Largest Open Dump in Latin America: Ten Years of Analysis

Ana Carolina Silva Martins, Flávia Reis de Andrade, Daphne Heloísa de Freitas Muniz, Eduardo Cyrino Oliveira-Filho et autres

Objective: The objective of this study is to investigate the quality of groundwater in the Estrutural Administrative Region, located in the Central region of the Federal District, Brazil, before and after the closure of the largest open-air landfill in Latin America. Theoretical …

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The Seasonal Characterization and Temporal Evolution of Nitrogen, Phosphorus and Potassium in the Surface and Groundwater of an Agricultural Hydrographic Basin in the Midwestern Brazilian Savanna

Nayara Luiz Pires, Daphne Heloísa de Freitas Muniz, Luane Souza de Araújo, Jorge Enoch Furquim Werneck Lima et autres

The Brazilian savanna (Cerrado Biome) is one of the most important regions in the world in terms of food production, with the use of fertilizers based on nitrogen, phosphorus and potassium (NPK). When not applied properly, fertilizers can alter and affect water …

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Surface water quality assessment in the Federal District, Brazil: application of multivariate statistical analysis and water quality indices for human consumption and irrigation

Daphne Heloísa de Freitas Muniz, Juaci Vitória Malaquias, Eduardo Cyrino Oliveira-Filho

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Mercury distribution in organisms, litter, and soils of the Middle Araguaia floodplain in Brazil

Iara Oliveira Fernandes, Lucas Cabrera Monteiro, Vinícius Lima de Miranda, Ygor Oliveira Sarmento Rodrigues et autres

Mercury (Hg) is a chemical element that, depending on its concentration, may become toxic to living organisms due to the ability of Hg to bioaccumulate in food chains. In this study, we collected samples of soil, litter, and organisms in the Middle …

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Multivariate Statistical Analysis for Water Quality Assessment: A Review of Research Published between 2001 and 2020

Daphne Heloísa de Freitas Muniz, Eduardo Cyrino Oliveira-Filho

Research on water quality is a fundamental step in supporting the maintenance of environmental and human health. The elements involved in water quality analysis are multidimensional, because numerous characteristics can be measured simultaneously. This multidimensional character encourages researchers to statistically examine the …

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Mercury Dynamics in Organims, Litter, and Soils of the Middle Araguaia Floodplain in Brazil

Iara Oliveira Fernandes, Lucas Cabrera Monteiro, Vinícius Lima de Miranda, Ygor Oliveira Sarmento Rodrigues et autres

Abstract Mercury (Hg) is a chemical element that, depending on its concentration, may become toxic to living organisms due to the ability of Hg to bioaccumulate in food chains. In this study, we collected samples of soil, litter and organisms in the …

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ÁGUA É SAÚDE? EVIDÊNCIAS DE UM LOCAL DE EXTREMA VULNERABILIDADE NO DISTRITO FEDERAL

Ana Carolina Silva Martins, Flávia Reis de Andrade, Marcos Takashi Obara, Daphne Heloísa de Freitas Muniz et autres

Resumo: Brasília abrigou por 60 anos o Lixão na Estrutural.Estudos apontaram riscos quanto à exposição à água contaminada.Em 2017, foi realizado diagnóstico com 1.025 trabalhadores.Após o diagnóstico, foram realizadas oficinas de educação em saúde.Foi realizada a doação de 2.000 filtros de água.O …

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Solubility, toxicity, and accumulation of metals from biotite schist rock in Danio rerio fish

Eduardo Cyrino Oliveira-Filho, Daphne Heloísa de Freitas Muniz, Á. V. de Resende, Éder de Souza Martins

Abstract The objective of this work was to determine the solubility of biotite schist rock powder by different methods, as well as the potential toxicity/accumulation of its metals in Danio rerio freshwater fish. Solubility was tested in ultrapure water and in CaCl2 …

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