Specific Activity of Radium-226 in Groundwater in the Area of Roi Et Province

Abstract

This work aimed to study specific activity of Radium-226 in groundwater in the area of Roi Et province. Totally, 20 groundwater samples were collected and examined. Radium in groundwater samples was absorbed by manganese fibers technique. In addition, specific activity of Radium-226 was analyzed using a low background HPGe Gamma ray spectrometer. Results showed that the specific activity of Radium -226 in groundwater samples are ranged from <6 - 177 mBq/L. The results showed that the annual dose equivalent obtained in the present study was much lower than the recommended reference dose level as reported by WHO