Annual Effective Dose of Radon-222 in Well Water Samples in Male Adults: Idah, Nigeria

摘要

A total of 25 well water samples from various locations of Idah and environs including Ofukolo, Ega, Ede - Adejo, and Ede - Alaba, have been investigated for their ~(222)Rn concentrations using liquid scintillation counter manufactured by Packard Instrument Company. The concentration of ~(222)Rn in the well water samples was found to vary in the range 3.0±2.00 - 18.24±1.50 Bq/L and a mean concentration of 9.64 Bq/L with An average mean concentration of 10.23 Bq/L recorded respectively. The results showed that ~(222)Rn concentration in well water sources were greater than the maximum concentration limit (MCL) of 11.1Bq/L set by USEPA and 10.0 Bq/L set by WHO. The annual effective dose by ingestion for adult male was found to be in the range 0.0198 mSv/y to 0.1198 mSv/yand an average of 0.0721 mSv/y which are lower than the annually received effective dose as set by ICRP.