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Health Risk Assessment of Nitrate in Groundwater Resources of Iranshahr Using Monte Carlo Simulation and Geographic Information System (Gis) Publisher



Shalyari N1 ; Alinejad A2 ; Hashemi AHG3 ; Radfard M4 ; Dehghani M4
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 Public Health, Fasa University of Medical Sciences, Fasa, Iran
  3. 3. Department of Otolaryngology, Loghman Educational Hospital, School of Medicine, Shahid Beheshti, University of Medical Sciences, Tehran, Iran
  4. 4. Department of Environmental Health Engineering, School of Public Health, Shiraz University of Medical, Sciences, Shiraz, Iran

Source: MethodsX Published:2019


Abstract

Because of exposure to a wide range of chemical contaminants such as nitrate via potable water resources, the use of the approaches to set standards for drinking water quality and also to do a risk assessment is necessary for maintaining the public health. High levels of nitrate in drinking water can have adverse health effects; primarily for infants and pregnant women. So, the present study aimed to the assessment of nitrate health risk in drinking water resources of the Iranshahr city, Sistan and Baluchistan province and also, evaluation of the uncertainty of nitrate and the probability of contamination occurrence by Monte-Carlo Simulation (MCS) technique. Besides, the geographic information system (Arc GIS, Ver 10.3) was applied to mapping the nitrate concentration in groundwater resources of the studied area. For these aims, the numbers of 66 samples were collected from rural groundwater resources, and nitrate concentration was measured using a Spectrophotometer in wavelength of 220 nm. According to the results, the nitrate concentration was in the range of 6.49 mg/L, and its average level was 6.15 mg/L. Also, the simulation results with 90% confidence showed that the hazard equitant (HQ) in the infant groups, children-teenagers and adults was less than 0.331, 0.311, 0.312, and 0.3, respectively. © 2019 The Authors
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