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Abstract
A neutron-activation analysis method for the determination of traces of iron in samples of purified platinum is described. The nuclear reactor BEPO at Harwell has been used as the neutron source. A rapid radiochemical separation procedure using carriers has been employed to decontaminate the iron activity from most other induced activities. The analysis is completed by discriminated γ-scintillation counting. Results of analyses of seven samples of platinum are quoted. The method of analysis has the advantage that it obviates difficulties caused by “reagent blanks” or by contamination from traces of inactive iron after irradiation. Interference resulting from nuclear reactions of elements other than iron in the samples appears to be of no consequence in the present case.
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