[en] The distribution coefficients K for Dy-, Er-, and Y-nitrate between TBP and 8 to 1 M-HNO3 were determined for a wide range of concentrations. Ksub(Er) was higher than Ksub(Y) for the whole range investigated, the separation coefficient reaching its maximum at lowest acidities. The relative place of Dy changed with acidity. On addition of 1 M-NH4NO3 all distribution coefficients were raised. (author)
Original Title
Die Verteilungskoeffizienten von Dysprosium-, Erbium- and Yttriumnitrat zwischen Tributylphosphat und 8 bis 1 M-Salpetersaeure