Radon and radium concentrations in drinkable water supplies of the Thu Duc region in Ho Chi Minh City, Vietnam

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
Cong Hao LeQuoc Bao Le

Abstract

The results of (222)Rn and (226)Ra activity measurements in drinkable water supplies of the Thu Duc region in Ho Chi Minh City, Vietnam, are presented in this paper. The measurements were performed using a RAD 7 radon detector manufactured by Durridge Company, Inc. Mean concentrations of (222)Rn and (226)Ra were found to be 0.11±0.01Bql(-1) and 0.11±0.02Bql(-1) in 14 drinking water samples. They are 0.12±0.01Bql(-1) and 0.10±0.02Bql(-1) in 15 tap water samples, respectively. The mean (222)Rn concentration of 1.40±0.03Bql(-1) in the 20 groundwater samples of this study is also lower than the WHO advised level of 100Bql(-1). Fifty percent of groundwater samples analysed have (226)Ra levels in excess of the USEPA recommended maximum contaminant level of 0.185Bql(-1). The occurrence of elevated concentrations of (226)Ra in groundwater samples was explained by pH and alkaline conditions.

References

Mar 31, 2004·Journal of Environmental Radioactivity·R M R AlmeidaO Sracek
Sep 16, 2004·Radiation Protection Dosimetry·M Galán LópezV Gómez Escobar
Jun 10, 2008·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Boonsom Porntepkasemsan, Kanitha Srisuksawad
Dec 16, 2011·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Natasa TodorovicMiroslav Veskovic
Feb 19, 2013·Radiation Protection Dosimetry·Latife SahinMutlu Içhedef

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