利用阳离子交换法分离Ac/Ra的实验研究
Nuclear Electronics & Detection Technology(2021)
Abstract
采用阳离子交换法分离Ac/Ra,在AG50W-X8树脂中使用檬酸为载带剂,HNO3为浓度梯度洗脱剂,对228Ra标准溶液中的228Ac/228Ra和稳定的Ba/La混合标准溶液进行分离实验.结果表明:在HNO3浓度为3mol/L时,可分离洗脱Ra,且其洗脱率可达到90%以上;在HNO3浓度为6mol/L时,可分离洗脱Ac,且其洗脱率可达95%.同时,在HNO3浓度为3mol/L时,Ba的洗脱率可以达到100%;在HNO3浓度为6mol/L时,La的洗脱率只达到85%.
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