Radiochemistry Pub Date : 2021-03-05 , DOI: 10.1134/s1066362221010112 E. A. Erin , V. N. Momotov , A. Yu. Volkov
Abstract
Experimental results are presented to substantiate conditions and modes of the process of deactivation of materials and articles to remove the surface α-, and γ-radioactive contamination. Compositions of a deactivating solution based on a mixture of nitric and phosphoric acids with addition of divalent silver, which enable a 102–103-fold decrease in the surface radioactive contamination in one deactivation cycle at room temperature. A scheme of silver regeneration for its repeated use was developed. The scheme provides a silver yield of about 95% with a ~105 coefficient of purification to remove radioactive isotopes.
中文翻译:
在银(II)存在下停用材料和物品
摘要
提出了实验结果,以证实材料和物品失活以去除表面α-和γ放射性污染的条件和方式。以硝酸和磷酸的混合物为基础的减活溶液的成分,加上二价银,可使室温下一个失活循环中的表面放射性污染物减少10 2 –10 3倍。开发了一种重复使用的银再生方案。该方案可提供约95%的银收率,并具有〜10 5的纯化系数以去除放射性同位素。