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Spatial Distribution Variation and Probabilistic Risk Assessment of Exposure to Fluoride in Ground Water Supplies: A Case Study in an Endemic Fluorosis Region of Northwest Iran Publisher Pubmed



Yousefi M1 ; Asghari FB1 ; Zuccarello P2 ; Conti GO2 ; Ejlali A3 ; Mohammadi AA4 ; Ferrante M2
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Medical Sciences, Surgical and Advanced Technologies “G.F. Ingrassia�–Hygiene and Public Health, Laboratory of Environmental and Food Hygiene (LIAA), University of Catania, Catania, 95123, Italy
  3. 3. Health Center of Urmia, Urmia University of Medical Sciences, Urmia, Iran
  4. 4. Department of Environmental Health Engineering, Neyshabur University of Medical Sciences, Neyshabur, Iran

Source: International Journal of Environmental Research and Public Health Published:2019


Abstract

Prevalence of fluorosis is a worldwide public health issue, especially in the West Azerbaijan province of Iran. The aim of this study was to investigate fluoride concentration in drinking water resources within Maku city, in both the warm and cold seasons, to perform a health risk assessment. Fluoride were measured using UV-visible spectrophotometry. The spatial distribution was calculated by the software ArcGIS and Hazard Quotients (HQs) were calculated according to the US EPA method. The fluoride concentrations ranged between 0.29 to 6.68 and 0.1 to 11.4 mg/L in the cold and warm seasons, respectively. Based on this report, 30.64 and 48.15% of the samples revealed a fluoride level higher than the permissible level in the cold and warm seasons, respectively. Moreover, results showed that the HQ value in the warm season for different age groups was higher than the HQ value in the cold season. In both seasons, the non-carcinogenic risks of fluoride for the four exposed populations varied according to the order: children > teenagers > adults > infants. The HQ values for three age groups (children, teenager and adults) for both seasons were higher than 1 with a high risk of fluorosis. The results of this study, support the requests that government authorities better manage water supplies to improve health quality. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
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