Fluoride concentration in drinking water samples in Fiji

Prasad, Neha; Pushpaangaeli, Bernadette; Ram, Anumala; Maimanuku, Leenu

doi:10.1111/1753-6405.12787

Cited by 11 publications

(6 citation statements)

References 4 publications

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“…Fluoride levels measured in all the drinking water samples were below the permissible levels (Table 1). Many researchers investigated fluoride which is an occurring health hazard in drinking-water resources 28,29 . Chloride and sulphate levels exceeded can change the taste of water and cause gastrointestinal problems, respectively 26 , 30 .…”

Section: Discussionmentioning

confidence: 99%

Chemical and microbiological assessment of drinking water quality

Kaynar¹,

Demli²,

Orhan³

et al. 2022

Afr H. Sci.

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Background: Access to an adequate amount of water is restricted because of the increase in the use of natural resources, which is caused by the rapid growing in world population and the climate change that global warming brings, and the development in the industry. Investigating the causes of water pollution, creating solutions for the problem, taking the control of the pollution, and maintaining monitorability are necessary.Objectives: This study was carried out in order to determine microbiological and chemical characteristics of drinking water and their compatibility for human consumption with the aim of providing safety of drinking waters.Methods: Thirty-four drinking water samples obtained from different sampling points in Ankara, Turkey, in 2019 were subjected to microbiological analysis and chemical analysis in terms of anions (bromide-Br-, chloride-Cl-, fluoride-F-, nitrate-NO3-, nitrite-NO2-, sulfate-SO4-2) by ion chromatography. Microbiological analyses were applied according to the international standards.Results: None of the samples contained coliform bacteria, Escherichia coli and intestinal enterococci. It was established that concentrations of the specified anions in tested waters were within the acceptable levels of with the Council Directive 98/83/EC.Conclusions: The determined chemical and microbiological qualities of these samples are suitable for drinking, and do not poseany threats to public health.Keywords: Drinking water; analysis; chemical; microbiological; quality.

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Section: Discussionmentioning

confidence: 99%

Chemical and microbiological assessment of drinking water quality

Kaynar¹,

Demli²,

Orhan³

et al. 2022

Afr H. Sci.

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“…It is worth noting that, despite the fact that these substances also interfere with the electrometric method, the effect is smaller (APHA et al, 2012). There are also limitations for the use of the colorimetric method, considering that samples cannot be cloudy or colored, should be distilled before the analysis (APHA et al, 2012;Prasad et al, 2018), and cannot contain free residual chlorine (Dovidauskas et al, 2016).…”

Section: Discussionmentioning

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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“…The colorimetric fluoride assay with SPADNS (sodium 2-[parasulfophenylazo]-1,8-dihydroxy-3,6-naphthalene disulfonate) is based on the reaction between F and the zirconium dye 20 . The intensity of the red color in water samples was measured in a spectrophotometer at a wavelength of 570 nm.…”

Section: Colorimetric Methodsmentioning

confidence: 99%

Comparison between the ion-specific electrode and SPADNS methods for analysis of fluoride concentration in the water supply

Uchida,

Cury,

Tabchoury

et al. 2024

Braz. J. Oral Sci.

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The maintenance of adequate fluoride (F) concentration in the public water supply is fundamental for ensuring that the community use of F can reach the maximum benefit for caries control and minimum risk for dental fluorosis. Thus, surveillance systems must use accurate and valid analytical methods to determine F concentration and, according to the literature, give preference to the ion-specific electrode (F- ISE) analysis. Aim: The objective of this study was to compare the accuracy of the ISE and SPADNS methods in the determination of the F concentration in the same water sample. Methods: Duplicate water samples were taken from 30 sampling sites in the municipality of Maringá, state of Paraná, monthly for 12 months, totaling 276 samples. An aliquot was analyzed by the FOP-UNICAMP Oral Biochemistry laboratory, using the F- ISE method, and the other one, by the SANEPAR laboratory in Maringá/PR, using the SPADNS method. Descriptive analysis and Pearson’s correlation test were applied, with a significant level of p<0.05. Results: Results were expressed as ppm F (mg F/L), and a very strong positive correlation (r= 0.91; p<0.001) was detected between the two methods of analysis. Conclusion: Our findings suggest that the determination of f luoride concentration in water can be made with accuracy by the SPADNS method, a standardized analysis protocol.

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Fluoride concentration in drinking water samples in Fiji

Cited by 11 publications

References 4 publications

Chemical and microbiological assessment of drinking water quality

Chemical and microbiological assessment of drinking water quality

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

Comparison between the ion-specific electrode and SPADNS methods for analysis of fluoride concentration in the water supply

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