Arabi A M El, Ahmed N K, Din K Salahel
Physics Department, Faculty of Science at Qena, South Valley University, Egypt.
Radiat Prot Dosimetry. 2006;121(3):284-92. doi: 10.1093/rpd/ncl022. Epub 2006 Feb 23.
The concentrations of the natural radionuclides (226)Ra, (232)Th and (40)K in 15 different water samples from Elba protective area, south-eastern desert of Egypt, have been determined using NaI(Tl) detector. Gamma ray spectrometric analysis was performed and the concentrations obtained for each of the radionuclides expressed in Bq l(-1) ranging from 1.6 to 11.1 for (226)Ra, 0.21 to 0.97 for (232)Th and 9.1 to 23 for (40)K. A reasonable correlation was found between (226)Ra, (232)Th concentrations and pH, although no general trend was observed with conductivity and total dissolved solids. The mean effective doses of 0.56 mSv y(-1) for (226)Ra, 0.065 mSv y(-1) for (232)Th and 0.04 mSv y(-1) for (40)K were estimated for the ingestion of these waters by adults.
使用碘化钠（铊）探测器测定了埃及东南部沙漠厄尔巴保护区15个不同水样中天然放射性核素镭-226、钍-232和钾-40的浓度。进行了伽马射线光谱分析，所获得的每种放射性核素的浓度以贝克勒尔每升（Bq l⁻¹）表示，其中镭-226的浓度范围为1.6至11.1，钍-232为0.21至0.97，钾-40为9.1至23。尽管未观察到与电导率和总溶解固体的一般趋势，但发现镭-226、钍-232浓度与pH值之间存在合理的相关性。估计成年人摄入这些水时，镭-226的平均有效剂量为0.56毫希沃特每年（mSv y⁻¹），钍-232为0.065毫希沃特每年，钾-40为0.04毫希沃特每年。
