Natural radioactivity level and elemental composition of soil samples from a high background radiation area on Eastern Coast of India (Odisha)
Natural radioactivity level and elemental composition of soil samples from a high background radiation area on Eastern Coast of India (Odisha)
复制标题
印度东海岸（奥里萨邦）高本底辐射区土壤样品的自然放射性水平和元素组成
DOI：
10.1093/rpd/ncw052
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发表时间：
2016
影响因子：
1
通讯作者：
G. S. Gusain and R.C. Ramola
中科院分区：
文献类型：
--
作者：
S.K. Sahoo;R. Kierepko;A. Sorimachi;Y. Omori;T. Ishikawa;S. Tokonami;G. S. Gusain and R.C. Ramola
对印度东海岸奥迪萨邦高本底辐射区不同地点土壤样品的放射性浓度进行了综合研究。剂量率测量范围为0.2 5~1.2µSv h−1。能谱测量表明，Th系元素是辐射增强水平的主要贡献者，并使作者得到2 2 6Ra、2 2 8和40K的平均活度浓度(±SD)分别为130±97、1110±890和360±140Bq kg−1。根据有效剂量率估算人体室外放射性核素暴露剂量率范围为0.14±0.02~2.15±0.26 mSv，高于UNSCEAR全球年平均值0.07 mSv。此外，X射线荧光分析还提供了样品中主要元素含量的信息，表明土壤中钛的含量很高(7.4±4.9%)。
A comprehensive study was carried out to determine the radioactivity concentration of soil samples from different sites of a high background radiation area in the eastern coast of India, Odisha state. The dose rate measuredin situvaried from 0.25 to 1.2 µSv h−1. The gamma spectrometry measurements indicated Th series elements as the main contributors to the enhanced level of radiation and allowed the authors to find the mean level of the activity concentration (±SD) for226Ra,228Th and40K as 130±97, 1110±890 and 360±140 Bq kg−1, respectively. Human exposure from radionuclides occurring outdoor was estimated based on the effective dose rate, which ranged from 0.14±0.02 to 2.15±0.26 mSv and was higher than the UNSCEAR annual worldwide average value 0.07 mSv. Additionally, X-ray fluorescence analysis provided information about the content of major elements in samples and indicated the significant amount of Ti (7.4±4.9 %) in soils.