Bestimmung von Selen in Lebensmitteln und in Mineralien mittels Neutronenaktivierungs-analysen

Abstract

The determination of Se became important, since it was recognized that this trace element is essential for the human and animal diet. Lately, it was found that most patients suffering from a cancer disease manifest very low values of Se in their blood plasma. Activation analysis is a well suited technique to measure the concentrations of Se in a vast range of materials with very different concentrations. At the lower end of concentrations, a radiochemical separation of Se following the irradiation is mandatory to obtain reliable results in the determination.