Natural Radioactivity Measurements of Basalt Rocks in Aden governorate, South of Yemen on Gulf of Aden
Natural Radioactivity Measurements of Basalt Rocks in Aden governorate, South of Yemen on Gulf of Aden
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亚丁湾也门南部亚丁省玄武岩的天然放射性测量
DOI：
10.9790/4861-0563948
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
F. Ahmed
中科院分区：
文献类型：
--
作者：
S. Harb;A. H. El;A. Zahran;A. Abbady;F. Ahmed
对火成岩中的放射性含量进行了调查;从也门南部亚丁省采集了63个玄武岩样品。用NaI（TI）探测器测量了226 Ra、232 Th和40 K的活度浓度。沿着研究区样品的镭当量活度Raeq（Bq/Kg）在51.60 ~ 809.26 Bq/Kg之间，平均值为237.01 Bq/Kg，低于国际上公认的370 Bq/Kg。为了估计这种天然放射性成分对健康的影响，（55 nGyh-1），室内外年有效剂量率Eied（0.11 mSvy-1）和Eoed（0.03 mSvy-1），外部危险指数Hex（0.138）和内部危险指数Hin（0.154），代表性水平指数Iγr（0.386）高于世界平均值。
The amounts of radioactivity in the igneous rocks have been investigated; 63 basalt rock samples were collected from Aden governorate, South of Yemen. The activity concentration of 226 Ra, 232 Th and 40 K were measured using NaI (TI) detector. Along the study area the radium equivalent activities Raeq in Bq/Kg of samples under investigation were found in the range of 51.60to 809.26Bq/Kg with an average value of 237.01Bq/Kg, this value is below the internationally accepted value of 370 Bq/Kg. To estimate the health effects of this natural radioactive composition, the average values of absorbed gamma dose rate D (55 nGyh -1 ), Indoor and outdoor annual effective dose rates Eied (0.11 mSvy -1 ), and Eoed (0.03 mSvy -1 ), External hazard index Hex(0.138) and internal hazard index Hin (0.154), and representative level index Iγr(0.386) have been calculated and found to be higher than the worldwide average values.