{"title":"Determinations of soil radioactivity, indoor radon concentration levels and their correlation in Oke-Ogun area, Southwestern Nigeria","authors":"A. Ademola, R. Obed","doi":"10.1504/IJLR.2016.10002362","DOIUrl":null,"url":null,"abstract":"Indoor radon concentration measurements in 116 rooms and gamma activity measurements in the soil samples around the rooms were carried out in Oke-Ogun area (Southwestern, Nigeria). The mean activity concentrations of 40K, 232Th, and 238U in the soil were 3±5, 25±7 and 212±99 Bqkg−1, respectively. The mean absorbed dose rate (D) and the effective dose estimated were 44±8 nGy h−1 and 45±8 μSv y−1, respectively. Radon concentrations in the rooms varied from 148 Bqm−3 to 627 Bqm−3 with mean of 282±99 Bqm−3. The estimated mean annual effective dose is 7±2 mSv y−1. It is therefore advisable for the inhabitants of the study area to ventilate their houses regularly, to reduce the possible risk of contracting lung cancer. Radon concentration in the rooms surveyed show a good correlation (R² = 0.702) with 238U/226Ra activity in soil samples.","PeriodicalId":14141,"journal":{"name":"International Journal of Low Radiation","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Low Radiation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1504/IJLR.2016.10002362","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Medicine","Score":null,"Total":0}
引用次数: 0
Abstract
Indoor radon concentration measurements in 116 rooms and gamma activity measurements in the soil samples around the rooms were carried out in Oke-Ogun area (Southwestern, Nigeria). The mean activity concentrations of 40K, 232Th, and 238U in the soil were 3±5, 25±7 and 212±99 Bqkg−1, respectively. The mean absorbed dose rate (D) and the effective dose estimated were 44±8 nGy h−1 and 45±8 μSv y−1, respectively. Radon concentrations in the rooms varied from 148 Bqm−3 to 627 Bqm−3 with mean of 282±99 Bqm−3. The estimated mean annual effective dose is 7±2 mSv y−1. It is therefore advisable for the inhabitants of the study area to ventilate their houses regularly, to reduce the possible risk of contracting lung cancer. Radon concentration in the rooms surveyed show a good correlation (R² = 0.702) with 238U/226Ra activity in soil samples.
期刊介绍:
The IJLR is a peer-reviewed journal dedicated to the publication of research articles, review papers and technical notes in all domains related to low-dose radiation, among which are the biological and health effects in humans and the biota, in vitro and in vivo research on low radiation effects, regulatory and policy aspects, risk estimation and public perception.