Fluoride Geochemistry and Exposure Risk Through Groundwater Sources in Northeastern Parts of Rajasthan, India

Keesari, Tirumalesh; Roy, Annadasankar; Sinha, Uday Kumar; Jaryal, Ajay; Singh, Manveer; Jain, Swati

doi:10.1007/s00244-020-00794-z

Cited by 26 publications

(4 citation statements)

References 51 publications

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“…The low amount of fluoride in drinking water (<0.5 mg F/l) is one of the most important predisposing factors for dental caries [31]. Amounts of fluorine in drinking water greater than 2 mg F-/l cause dental and over 10 mgF-/l cause bone fluorosis [32]. It has been established that in our climate zone the optimal amount of fluoride in drinking water have to be 1 mg F-/l [33].…”

Section: Discussionmentioning

confidence: 99%

The Correlation Between the DMFT of the 15-year-old Children and the Concentration of Fluoride in Drinking Water from the East Region of the Republic of Macedonia

Ambarkova

Kokoceva-Ivanovska

Stavreva

et al. 2022

Open Access Maced J Med Sci

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AIM: The aim of this study is to determine the correlation between the DMFT index of 15-year-old children from the east region and the concentration of fluoride in drinking water from the populated areas where children live. METHODS: In the examination, 414 children were enrolled, out of seven central secondary schools from four bigger cities from east region, at which the DMFT index was determined. The children live in six different cities and 51 different villages. Fifty-seven water samples were taken from the examined area to determine the fluoride concentration using the electrochemical method using the pH/ISE meter-Thermo-Orion with a special F-electrode (Thermo Orion Ion Plus Fluoride Electrode) at the Institute for public health. Spearman’s method was used to determine the correlation between the specified variables. RESULTS: The total number of children in the examined sample was 414, out of which 226 (54.6%) were male and 188 (45.4%) were female. The prevalence of caries free children was 9.4%. SiC index was 10.22. The average DMFT index in this group of children was 5.77 with a standard deviation of ± 4.02. Maximum concentration of fluorine in drinking water of 0.99 ppmF was determined in the village Raslovci, and 0.87 ppmF in the village Star Karaorman, while the minimum (0.07 ppmF) in the village Dvorishte and (0.10 ppmF) in the village Grad. Correlation of the DMFT index in 15-year-old children from the east region and the concentration of fluorine in the drinking water has a negative, indirect correlation, with the value of the coefficient R = −0.27. CONCLUSION: The correlation between the DMFT index and the concentration of drinking water is a negative, indirect correlation, and statistically, this correlation is highly significant (p < 0.05).

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Section: Discussionmentioning

confidence: 99%

The Correlation Between the DMFT of the 15-year-old Children and the Concentration of Fluoride in Drinking Water from the East Region of the Republic of Macedonia

Ambarkova

Kokoceva-Ivanovska

Stavreva

et al. 2022

Open Access Maced J Med Sci

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“…The suspension is shaken in a polyethylene bottle of about 250 cm capacity on a rotary shaker (40 rpm) at room temperature for 1hour, and then filtered. The filtrates will be titrated with 0.1 mol dm -3 Sodium hydroxide solution in presence of phenolphthalein indicator and the sum of exchangeable alkaline cations will be calculated from the amount of sodium hydroxide solution used [20,21].…”

Section: Physical Parameters Of Soil Samples and Chemical Parameters ...mentioning

confidence: 99%

Physicochemical and Microbiological Evaluation of Soil and Effluent Contaminated with Azo-Dye in Itoku, Abeoukuta Ogun State, Nigeria

Ibitoye

Imarhiagbe²,

Ekhaise³

2022

MRJI

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The global industrialization of chemical dyes used for household products has resulted in various dyes leaching into the soil. Azo dye textile contamination could lead to infertile soil. This study investigates the ecological effect of azo textile dye contamination on bacterial biomass, selective pressure, and associated physicochemical changes in soil samples contaminated with textile azo dye in Itoku, Abeokuta, Nigeria. Microbiological and physicochemical changes of the soil and effluent samples collected were determined using standard procedures. Results revealed that the average count of total viable bacteria in the contaminated sampling sites ranged from 0.82±021 x 106 cfu/g to 1.65±0.02 x 106 cfu/g which was significantly lower than the control bacterial counts. The dye contaminated and the control soil samples each contained a heterogenous population of bacteria which included Paenibacillus validus, Bacillus licheniformis, Bacillus niacin, Seratia liquefaciens, Staphylococcus gallinarum, Bacillus subtilis, and Bacillus coagulans. The physicochemical analysis of the soil revealed high levels of pH in the azo dye contaminated soil (10.4–11.1) and electrical conductivity was also highest in the effluent (1250 to 2943 units) compared to the control (430 to 480). Importantly, the control samples were higher in all of the other tested soil parameters including cation exchange, the mean value of the organic matter, water holding capacity, particle density, moisture content, and total porosity. Conclusion- Azo dye contamination caused decreases in bacterial density and many other soil parameters along with higher PH and electrical conductivity which suggests that azo textile dye contaminated soil is unfavorable for agricultural purposes and potentially toxic to the ecosystem.

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“…Dental and bone problems on the interviewed inhabitants were described, conceivably related to Finhalation (dusts and gases) and ingestion (hand-to-mouth, food and drinking water). Association between fluorides geochemistry and health is well studied [e.g., 40,41,42]. Fluoride metabolism varies with solubility, structure, reactivity, and release of F − ions.…”

Section: Ambient Pm10 and Outdoor Dust Samples From Rooftopsmentioning

confidence: 99%

Fogo Volcano (Cape Verde) 2014-2015 Eruption: Dust Characterization and Impacts on Environment and Human Health

Candeias¹,

Ávila²,

Alves³

et al. 2021

Preprint

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Fogo (Fogo island, Cape Verde Republic) is the youngest and most active volcano of the archipelago. The last eruption occurred in 2014–2015. Aiming at studying dust emissions and transport during the eruption period and assessing their impact on air quality and human health, a mineralogical and chemical characterization was undertaken in outdoor dust from all over the island, as well as in the lava resulting from this event. Air quality monitors were used to obtain concentrations of atmospheric particulate matter (PM) and gaseous pollutants. The mineralogical constitution of the samples was analysed by X-ray diffraction and Electron Microprobe, while the chemical characterization was performed through X-ray Fluorescence Spectrometry and ICP-MS. The volcanic rock was found to be tephritic to basanitic, with high potassium content. Several minerals were identified, such as titanian augite with ilmenite, basaltic hornblendes, pyrrhotites, apatites, pyroxenes, basaltic hornblendes and hematites. Concentrations of the particulate matter inhalable fraction (PM10) exceeded the 24-hour mean of 50 µg/m3 recommended by the World Health Organization. Nevertheless, total volatile organic compounds (TVOCs) showed levels lower than the worrying range. The highest levels of CO2 were recorded in more populated villages and farthest from the volcano. The Pollution Load Index (PLI) for outdoor dust collected on rooftops was always above 1, suggesting enrichment, with higher values in the dust size fraction < 63 µm. In the same way, the Contamination Factor pointed to high enrichment of As, Ni and Pb, and very high enrichment of Cd in the same size fraction. The Non-carcinogenic Hazard Quotient and Hazard Index estimated for Children suggest that health problems may arise. The Carcinogenic Risk, for all size fractions, was above the target risk. The element that most contributed to the global risk was As, followed by Pb and Co. Ingestion was the main exposure route for all size fractions. The dust size fraction that represented the highest risk was < 63 µm, mostly due to the As concentration.

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Fluoride Geochemistry and Exposure Risk Through Groundwater Sources in Northeastern Parts of Rajasthan, India

Cited by 26 publications

References 51 publications

The Correlation Between the DMFT of the 15-year-old Children and the Concentration of Fluoride in Drinking Water from the East Region of the Republic of Macedonia

The Correlation Between the DMFT of the 15-year-old Children and the Concentration of Fluoride in Drinking Water from the East Region of the Republic of Macedonia

Physicochemical and Microbiological Evaluation of Soil and Effluent Contaminated with Azo-Dye in Itoku, Abeoukuta Ogun State, Nigeria

Fogo Volcano (Cape Verde) 2014-2015 Eruption: Dust Characterization and Impacts on Environment and Human Health

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