Krähenbühl, UrsUrsKrähenbühlBurger, MarioMarioBurger2024-10-252024-10-251989https://boris-portal.unibe.ch/handle/20.500.12422/160854Some refractory trace elements are important target elements for Spallation reactions in meteorites. These elements also serve to characterize the investigated meteorites. The elements Ti, Y, Zr, Hf, W and Ta were measured after radiochemical separation in chondrites from China. After acid digestion of the irradiated sam-ples, the group separations were obtained by precipitation reac-tions. The necessary radiochemical purification of the pure β emitter Y was realized on a Lewatite OC 1026 column. For all the other elements discrete gamma radiation was measured.en500 - Science::570 - Life sciences; biology500 - Science::540 - Chemistryarticle10.7892/boris.11504810.1524/ract.1989.47.1.21