Abstract Samples of Egyptian monazite ore obtained from black sand of Abu-Khashaba, Rashied (Rosetta) area on the Mediterranean Sea coast were analyzed for some lanthanides and coexisting elements using instrumental neutron activation analysis (INAA). The analyses were carried out qualitatively and quantitatively for the elements Ce, Nd, Eu, Gd, Tb, Yb and Sc, La as well as the accompanying elements Co, Cr, Fe, Hf, Nb, Zn, Zr in addition to the actinides Th and U; whereas after relatively longer decay time the following lanthanide elements were analyzed: Ce, Nd, Eu, Gd, Tb, Yb and Sc, beside the accompanying elements Co, Cr, Fe, Hf, Nb, Zn, Zr and Th. Two certified reference materials (CRM) were used in this study. For sorption studies, radioactive isotopes 141Ce, 160Tb, 169Yb, 95Zr, 181Hf, and 95Nb were prepared by neutron irradiation to trace the adsorption behaviors of their corresponding elements under certain conditions. Furthermore, radiochemical separation of the analyzed elements in the irradiated monazite samples in sulfuric acid solutions was carried out. Ion exchange technique was applied under static and dynamic conditions and the employed inorganic ion exchangers were locally synthesized and characterized using FT-IR and scanning electron microscopy (SEM) tools. Good group separation of the analyzed lanthanide elements from the accompanying elements was achieved.

中文翻译：

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独居石样品中镧系元素和共存元素的仪器中子活化分析和使用合成无机离子交换剂的基团分离

摘要 使用仪器中子活化分析 (INAA) 分析了从地中海沿岸拉希德 (Rosetta) 地区 Abu-Khashaba 的黑沙中提取的埃及独居石矿石样品中的一些镧系元素和共存元素。除了锕系元素外，还对元素 Ce、Nd、Eu、Gd、Tb、Yb 和 Sc、La 以及伴随元素 Co、Cr、Fe、Hf、Nb、Zn、Zr 进行了定性和定量分析Th和U；而在相对较长的衰减时间后，分析了以下镧系元素：Ce、Nd、Eu、Gd、Tb、Yb 和 Sc，以及伴随元素 Co、Cr、Fe、Hf、Nb、Zn、Zr 和 Th。本研究中使用了两种有证标准物质 (CRM)。对于吸附研究，放射性同位素 141Ce、160Tb、169Yb、95Zr、181Hf、通过中子辐照制备了 95Nb 和 95Nb，以追踪其相应元素在一定条件下的吸附行为。此外，对硫酸溶液中经辐照的独居石样品中的分析元素进行了放射化学分离。在静态和动态条件下应用离子交换技术，并使用 FT-IR 和扫描电子显微镜 (SEM) 工具局部合成和表征所采用的无机离子交换剂。实现了分析的镧系元素与伴生元素的良好组分离。在静态和动态条件下应用离子交换技术，并使用 FT-IR 和扫描电子显微镜 (SEM) 工具局部合成和表征所采用的无机离子交换剂。实现了分析的镧系元素与伴生元素的良好组分离。在静态和动态条件下应用离子交换技术，并使用 FT-IR 和扫描电子显微镜 (SEM) 工具局部合成和表征所采用的无机离子交换剂。实现了分析的镧系元素与伴生元素的良好组分离。