Abstract This work describes the purification and separation of some radionuclides of 210Pb and/or 210Bi that might be used in calibration of nuclear spectroscopic instruments for forensic purposes and environmental studies. The retention and desorption investigations have been done by Dowex HCR-S/S resin as the cationic exchanger by batch mode. Full retention of metal ions was achieved in 0.1 M HNO3 solution after an equilibration period of 2 h at room temperature. The uptake of Pb and Bi is reached to more than 95 and 85%, respectively. Desorption studies by several reagents indicated that 1 M citric acid and ammonium acetate are efficient to elute and separate Bi and Pb. Taking into consideration all the above obtained results, column applications packed by the Dowex HCR-S/S resin were carried out to separate 214,210Pb and 214Bi radionuclides either in TENORM-concentrate or old certified reference of 226Ra solution. The column application results revealed that the recovery of Pb and Bi radionuclides was ∼93%. In the radiochemical part, the eluted Bi was impure due to presence of 23% Pb. In contrast, 70% of pure Pb was obtained. Thus, the radionuclides 210Pb can be recovered from several waste resources by this method. It can be concluded that the Dowex HCR resin can be an alternative economic material that could be used to produce 210Pb from the TENORM wastes generated from some strategic industries.

中文翻译：

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开发一种放射化学方法，用于提取色谱分离法医和环境感兴趣的 Pb 和 Bi 放射性同位素

摘要 这项工作描述了一些 210Pb 和/或 210Bi 放射性核素的纯化和分离，这些放射性核素可能用于法医目的和环境研究的核光谱仪器校准。Dowex HCR-S/S 树脂作为阳离子交换剂以间歇方式进行了保留和解吸研究。在室温下平衡 2 小时后，在 0.1 M HNO3 溶液中实现了金属离子的完全保留。Pb 和 Bi 的吸收率分别达到 95% 和 85% 以上。几种试剂的解吸研究表明，1 M 柠檬酸和醋酸铵可有效洗脱和分离 Bi 和 Pb。综合以上所得结果，采用 Dowex HCR-S/S 树脂填料进行柱应用分离 214、TENORM 浓缩液中的 210Pb 和 214Bi 放射性核素或 226Ra 溶液的旧认证参考。色谱柱应用结果表明，Pb 和 Bi 放射性核素的回收率约为 93%。在放射化学部分，由于存在 23% 的 Pb，洗脱的 Bi 是不纯的。相比之下，获得了 70% 的纯铅。因此，通过该方法可以从多种废物资源中回收放射性核素210Pb。可以得出结论，Dowex HCR 树脂可以成为一种替代经济材料，可用于从某些战略行业产生的 TENORM 废物中生产 210Pb。获得了 70% 的纯铅。因此，通过该方法可以从多种废物资源中回收放射性核素210Pb。可以得出结论，Dowex HCR 树脂可以成为一种替代经济材料，可用于从某些战略行业产生的 TENORM 废物中生产 210Pb。获得了 70% 的纯铅。因此，通过该方法可以从多种废物资源中回收放射性核素210Pb。可以得出结论，Dowex HCR 树脂可以成为一种替代经济材料，可用于从某些战略行业产生的 TENORM 废物中生产 210Pb。