Separation of no-carrier-added ^66,67Ga produced in heavy ion-induced cobalt target using alginate biopolymers

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• 作者：Dalia Nayak ; Anupam Banerjee ; Susanta Lahiri
• 关键词：Th/U dating ; Sea level ; Mollusk shells ; Quaternary ; 5e interglacial substage ; High Atlas ; Morocco
• 刊名：Applied Radiation and Isotopes
• 出版年：2007
• 期刊代码：6_09698043
• 类别：ce
• 出版时间：August 2007
• 卷：65
• 期：8
• 页码：891-896
• 文件大小：319 K

摘要

Heavy ion activation of natural cobalt foil with 84 MeV ¹²C results in the formation of no-carrier-added (nca) ^66,67As radionuclides, along with their corresponding decay products, ^66,67Ge and ^66,67Ga, in the matrix. Because arsenic and germanium radionuclides are short-lived, after a cooling period of 10 h only nca gallium radionuclides remain in the matrix. We attempted to separate the nca gallium radionuclides from the target matrix cobalt by biopolymeric calcium alginate (CA) and Fe-doped calcium alginate (Fe-CA) beads. A complete separation has been achieved by adsorbing ^66,67Ga and a lesser amount of bulk cobalt at pH 3 on Fe-CA beads, followed by desorbing cobalt from the beads with 0.4 M NaNO₂.