Avaliação da qualidade da fluoretação de águas de abastecimento público em 88 municípios da região Nordeste do estado de São Paulo (Brasil)

Dovidauskas, Sérgio; Okada, Isaura Akemi; Iha, Maria Helena; Cavallini, Álvaro Gennari; Okada, Marina Miyuki; Briganti, Rita de Cássia

doi:10.22239/2317-269x.00926

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…The water temperature is the only variable analyzed, mainly during the disinfection process (Brasil, 2021). Additionally, several studies in Brazil have found non-conformities in water from underground (Neres, 2010;Bezerra et al, 2017), superficial (Maia et al, 2003;Lima et al, 2004;Amaral et al, 2010;Oliveira et al, 2012;Brito et al, 2016), and mixed water collection systems (Silva et al, 2011;Moimaz et al, 2012;Santos et al, 2016;Dovidauskas et al, 2017;Romani al., 2018).…”

Section: Characteristics Of Water Supply In a Region Of Southern Brazilmentioning

confidence: 99%

Public water quality in surface and groundwater collection systems in Brazil

Bárta,

Da Silva,

Stumm

et al. 2024

CLCS

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Water is a vital natural resource for the existence of life, maintenance of ecosystems and the development of society. Many cities and communities rely on surface catchment systems, which involve collecting water from rivers, lakes and dams. Others, in turn, use underground collection systems, obtaining water from aquifers and artesian wells. Each of these methods presents specific challenges regarding water quality, as surface water is more exposed to organic and inorganic pollutants, while groundwater may contain minerals and dissolved substances that affect its potability. In general, the quality of water that reaches homes and commercial establishments is determined by the analysis of microbiological indicators, free residual chlorine, turbidity, total coliforms and fluoride. This narrative review seeks to clarify the nuances of water capture systems, their particularities and the factors that affect water quality in Brazil, highlighting the importance of constant monitoring, adequate treatment and effective water management policies in guaranteeing access to fresh water high quality for everyone.

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Section: Characteristics Of Water Supply In a Region Of Southern Brazilmentioning

confidence: 99%

Public water quality in surface and groundwater collection systems in Brazil

Bárta,

Da Silva,

Stumm

et al. 2024

CLCS

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“…Já em Portugal foram registradas águas minerais naturais com teores de Lítio superiores a 1500µg/L, que apresentavam alta mineralização e classificadas como tipo hidrogenocarbonatada-sódica e naturalmente carbonatadas ( > 25 mg/L de CO2 livre). No Brasil, estudos de Dovidauskas et al, (2019) indicam teores de Lítio da ordem de 28 µg L -1 , na região do Estado de São Paulo.…”

Section: Introductionunclassified

Complexidades Do Estudo Do Lítio Geogênico

Cruz,

Neves,

Otero

et al. 2022

GeoCadernos

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No Brasil, a existências de duas importantes províncias pegmatíticas localizadas uma na região do Seridó, no nordeste do Brasil e outra mais a sudeste, ao norte do estado de Minas Gerais, limites com o estado da Bahia, apresentam referências da presença de Lítio Geogênico. O Lítio, geogênico, secundário é um elemento químico que ocorre nos reservatórios geoquímicos superficiais, provenientes da ação do intemperismo químico das fases minerais, portadoras deste elemento. O enriquecimento supergênico fornece este elemento para os solos, sedimentos e água, ou seja, para os reservatórios geoquímicos superficiais. O Lítio é um elemento que traz diversos benefícios terapêuticos, entre eles cita-se o tratamento de distúrbios da saúde mental, como na doença afetiva bipolar, na prevenção de alterações do comportamento, podendo ser relacionado em alguma medida, na redução do suicídio e violência. O suicídio é a décima causa de morte em todo o mundo. As taxas de suicídio variam muito de país para país e de regiões dentro de um país. O Brasil possui uma das menores taxas de suicídio mundial, no entanto esses números vêm aumentando em torno de 30%, nas últimas décadas. As relações entre o Lítio e saúde mental podem ser abordadas pela geoquímica médica, que é um novo campo da Geologia, que investiga a distribuição dos materiais geológicos e as possíveis influências sobre a saúde humana. Este artigo apresenta as dificuldades da tentativa de relacionar os constatados teores de Lítio geogênico, existentes no Nordeste do Brasil, com os números das estatísticas de suicídio de levantamentos do sistema de saúde Brasileiro.

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“…Determining fluoride in the water requires the use of the electrometric method with specific ion electrode by the direct method, as well as the colorimetric method by the SPADNS method or the Alizarine visual colorimetric method (APHA et al, 2012). The Ion Chromatography method is also used (Dovidauskas et al, 2017) but sporadically.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of fluoride in the public water supply using electrometric or colorimetric analyses

et al. 2020

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The surveillance of the concentration of fluoride in the public water supply aims to ensure the balance between the benefits (carie prevention) and risk (dental fluorosis) of water fluoridation programs. The aim of this study was to check the accuracy of two analytical methods for monitoring the concentration of fluoride in the public water supply of a Brazilian city. The STROBE checklist was used to aid the conduction of this study and report the results. It was an analytical, observational, and prospective study using the water supply of Uberlândia, MG, Brazil. We collected 126 water samples at 21 sites for six consecutive months and analyzed them using the fluoride ion selective electrode (F-ISE) method and colorimetry with SPADNS. The statistical analysis was performed descriptively and then the ANOVA and Student t-test for paired samples were applied. The results showed that the F-ISE method had a lower coefficient of variation (12.3%) than the SPADNS method (57.4%). There was no significant variation of the fluoride concentration in the water through the supply network evaluated either by F-ISE as SPADNS. We concluded that the electrometric method should be the first choice for use by laboratories that monitor fluoride concentration in the public supply water.

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Avaliação da qualidade da fluoretação de águas de abastecimento público em 88 municípios da região Nordeste do estado de São Paulo (Brasil)

Cited by 5 publications

References 4 publications

Public water quality in surface and groundwater collection systems in Brazil

Public water quality in surface and groundwater collection systems in Brazil

Complexidades Do Estudo Do Lítio Geogênico

Monitoring of fluoride in the public water supply using electrometric or colorimetric analyses

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