Abstract
The presence of radon and heavy metals in water is considered as a potential threat to public health. This study aimed to estimate the health risk related to radon concentration and heavy metals in drinking water samples, which taken from in Kalisa sub-district of Ra-ngae district, Narathiwat province. Radon concentration was measured by a solid state nuclear track detector (SSNTD, CR-39). The measured values ranged from 0.17 to 7.63 Bq l−1, which is much below the safe limits proposed by the US Environmental Protection Agency (US EPA) and UN Scientific Committee on the Effects of Atomic Radiation. The mean annual effective dose calculated for these samples was also found to be within the limits provided by WHO and EU council. Three mineral water sources were also analyzed for concentration of certain heavy elements like As, Fe, and, Pb by using inductively coupled plasma-optical emission spectrometer, (ICP-OES). Out of these, concentrations of As were found to exceed the permissible limits suggested by WHO. However, safety limit of national standard for arsenic in drinking water remains at 0.05 mg l−1.
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