Abstract
Chemical distribution of 32P formed by neutron irradiation in a nuclear reactor was studied as a function of degree of hydration, number of acid hydrogen and ionic radii of cations in various orthophosphates, sodium pyrophosphate. sodium phosphite and sodium hypophosphite. The separation of chemical species containing 32P was done by paper partition chromatography.
It was noticed that the chemical distribution of 32P was effected by hydrated water in target materials so as to increase the retention as parent form and to change the stability of reduced species. As the discrepancies between retention values in a series of sodium orthophosphates were correlated to the number of acid hydrogen in samples, it was suggested that these effects were probably caused by the reducing action of acid hydrogen to the distributed species. On the effect of cations to the chemical distribution of 32P in irradiated various tertiaryphosphates, it was found that the percentage in each fraction was dependent upon ionic radii of cations. Three groups were shown in this case according to the valence states of cations. Each group was represented by one curve clearly different from others based on ionic radii of cations. The change of retention as parent form was proportional to the ionic radii of cations.
