Al-Ghamdi Hanan, El-Nahal M A, Saleh I H, Elsafi Mohamed, Sayyed M I, Almuqrin Aljawhara H
Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.
Department of Environmental Studies, Institute of Graduate Studies and Research, Alexandria University, Alexandria 21526, Egypt.
Materials (Basel). 2022 Jul 23;15(15):5130. doi: 10.3390/ma15155130.
Uranium-238 (U) and potassium-40 (K) are important naturally occurring radionuclides. Gamma spectroscopy is a direct, non-destructive method used to determine radionuclide concentrations, but it suffers from the interference of gamma lines. K gamma spectroscopy is affected by background interference, which leads to a reduction in the minimum detectable activity. The energy dispersive X-ray analytical technique is quick, with fewer interference problems or background effects. However, it is an indirect method for calculating and deducing the concentrations of isotopes. The aim of the present study was to compare and evaluate both techniques so that they can be utilized efficiently. The results of U and K were measured by well-calibrated gamma spectroscopy and energy dispersive X-ray techniques. the results indicated that Halayeb White granite is the most environmentally safe compared to the other two types because it contains a very low concentration of uranium 238 and potassium 40.
铀-238（U）和钾-40（K）是重要的天然放射性核素。伽马能谱法是一种用于测定放射性核素浓度的直接、非破坏性方法，但它受到伽马射线的干扰。钾伽马能谱法受到背景干扰的影响，这导致最低可探测活度降低。能量色散X射线分析技术速度快，干扰问题或背景效应较少。然而，它是一种计算和推导同位素浓度的间接方法。本研究的目的是比较和评估这两种技术，以便能够有效地利用它们。通过校准良好的伽马能谱法和能量色散X射线技术测量了铀和钾的结果。结果表明，与其他两种类型相比，哈拉伊卜白花岗岩在环境方面最安全，因为它所含的铀238和钾40浓度非常低。
