Automated multi-column chromatographic separation of short-lived 242g, 240Am, 237U and 72Ga from fresh fission products

被引：0
作者：
Jinlong Fan
Yufeng Wang
Zhiming Li
Xiufang Zhai
Xiangbo Zhang
Pei Shang
Li Duan
Gongshuo Yu
Jianfeng Liang
Tao Bai
机构：
[1] Northwest Institute of Nuclear Technology,
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2023年 / 332卷
关键词：
Short-lived Am; Short-lived U; Short-lived Ga; Activation product; Automated separation; Column chromatography; Fission products;
D O I：
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学科分类号：
摘要：
We present an automated separation method to simultaneously isolate short-lived activation products 242g, 240Am, 237U, 72Ga from fresh fission products prior to gamma spectrometric analysis. On the basis of multi-column chromatographic units (HDEHP resin, TBP resin, DGA resin, TEVA resin, Al2O3, activated carbon) assembly, smart media compatibility between adjacent columns, chromatographic conditions optimization and process automation design, a modularized and streamline separation procedure was developed. The established method allows better recoveries of 93%, 91% and 97% for americium, uranium and gallium separately and excellent decontamination factors of more than 105 for fission products even for large volume of samples. Because of highly efficient removal of interferents, this method coupled with well-type high-purity germanium (HPGe) gamma spectrometers achieved highly sensitive and selective analysis of activation products in spiked complicated matrix samples.
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页码：2667 / 2678
页数：11
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