An analytical method of 6Li, 10B and 113Cd concentrations in aqueous solutions using 14MeV neutron generator

Transmissions of 14 MeV neutrons for the samples were determined from the radioactivities of Dy2O3 targets. Semi-log plots of transmissions against the concentrations fell on straight lines. From the slope of the lines, detection limits and standard deviations were calculated, and were found to be 5 x 10-3, 2 x 10-3, 6 x 10-4M and 5.2, 5.2, 4.5%. A plot of the slope against absorption cross sections of the isotopes for thermal neutrons also fell on a straight line. The neutron transmission for aqueous solution samples was formulated. From the results of interference by other elements for the analysis, the permitted concentrations in systems of 10B-Cl and 113Cd-Hg, were 1.5 M of Cl and 0.04 M of Hg, respectively. In the systems of 6Li-Na and 113Cd-Zn, interference was not observed. (auth.)