Neutron activation analysis of traces in electrolytic zinc sulphate solutions : Part II. determination of molybdenum and rhenium

A neutron activation analysis has been devised for the determination of traces of molybdenum and rhenium in an electrolytic zinc sulphate solution. The activities due to the daughter ^99mTc and to ¹⁸⁶Re were counted. The chemical separation was performed on an anion-exchange resin. The matrix activities were separated by elution with 0.5 N nitric acid. The separation of technetium and rhenium was performed by an elution with 0.2 N perchloric acid. To avoid errors in the molybdenum determination, the uranium present in the sample was separated before the irradiation.