El-Taher A
Physics Department, Faculty of Science, Al-Azher University, Assuit Branch, 71542 Assuit, Egypt.
Appl Radiat Isot. 2010 Jun;68(6):1189-92. doi: 10.1016/j.apradiso.2010.01.046. Epub 2010 Feb 6.
Uranium isotopes found in soil, rock, water, plants, air, etc., contribute to the natural radiation exposure of the population. U concentrations in some Egyptian environmental samples like Toshki soil, Aswan iron-ore, and phosphate samples from El-Sibayia in the Nile Valley and El-Quseir in the Red Sea coast were determined using instrumental neutron activation analysis (INAA) and delayed neutron activation analysis (DNAA) in the Mainz TRIGA research reactor. The results showed that the phosphate rocks are rich natural sources of uranium among the other minerals forming the earth crust.
在土壤、岩石、水、植物、空气等中发现的铀同位素，会导致人群受到天然辐射照射。利用美因茨TRIGA研究堆中的仪器中子活化分析（INAA）和缓发中子活化分析（DNAA），测定了埃及一些环境样品中的铀浓度，如托什基土壤、阿斯旺铁矿石，以及尼罗河谷的锡巴伊亚和红海海岸的库赛尔的磷酸盐样品。结果表明，在构成地壳的其他矿物中，磷块岩是丰富的天然铀源。
