Non-Exchange of Radiocyanide and Radiosulfide Ions with Aqueous Thiocyanate Ion.

摘要

The exchange reactions of C14N(-) and S85(-) ions with thiocyanate ion have been investigated with essentially negative results. The KC14N solution was prepared from BaC1403 by the method of Adamson, and that of Na2S35 by the addition of sulfate-free BaS35. The exchange experiments were carried out by mixing the appropriate solutions in small centrifuge tubes which were then sealed. Those containing sulfate were sealed in a nitrogen atmosphere. After the elapse of the desired time the separation of radiocyanide and thiocyanate ions was carried out by the precipitation of zinc cyanide. The zinc cyanide was purified by reprecipitation and then treated by the distillation and sample preparation method previously reported. jg.