Preparation of no-carrier-added 211At solutions by a simple dry distillation method in the 209Bi(4He, 2n)211At reaction
Preparation of no-carrier-added 211At solutions by a simple dry distillation method in the 209Bi(4He, 2n)211At reaction
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209Bi(4He,2n)211At反应中简单干馏法制备无载体211At溶液
DOI：
10.1007/s10967-020-07308-0
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发表时间：
2020
影响因子：
1.6
通讯作者：
Azim Mohammad A.
中科院分区：
文献类型：
--
作者：
Nishinaka Ichiro;Ishioka Noriko S.;Watanabe Shigeki;Sasaki Ichiro;Azim Mohammad A.
209 Bi（4 He，2n）211 At反应产生211 At。通过基于干馏的简单方法从辐照的铋靶中分离产物。用γ-能谱仪测定了样品中的放射性活度，研究了方法的最佳条件。未添加载体的211 At溶液用洗脱剂制备，即蒸馏水、乙醇、甲醇或氯仿。通常，利用1.6mL洗脱液获得的回收率为26- 75%。将纯化的211 At溶液进行薄层色谱和高效液相色谱以鉴定存在的化学物质。
211At was produced in the209Bi(4He, 2n)211At reaction. The yield was separated from the irradiated bismuth target by a simple method, based on dry distillation. The optimized conditions of the method were studied by monitoring the astatine radioactivity with gamma-ray spectrometers. The no-carrier-added211At solutions were prepared with eluents, namely distilled water, ethanol, methanol, or chloroform. Generally, the recovery yields obtained with the utilization of 1.6 mL of the eluent were 26–75%. The prepared211At solutions were subjected to thin-layer chromatography and high-performance liquid chromatography to identify the chemical species present.