title: Chemical separation and spectrographic estimation of rare earths and yttrium in PuO(2) and (U,Pu)O(2).
abstract: An emission spectrographic method for the estimation of rare-earth impurities in plutonium oxide and the mixed oxide (U,Pu)O(2) (30% PuO(2)-70% UO(2)) has been developed. Rare-earth impurities are separated from the matrix by solvent extraction with tri-n-octylamine in xylene and are estimated after concentration. Thulium is used as internal standard and LiF-AgCl as carrier. The spectra are excited in a d.c. arc. The detection limits lie in the range 0.004-0.1 mug and the coefficient of variation ranges from 5 to 23%.
authors.affiliation: Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Bombay 400085, India.
authors.forename: A G
authors.initials: AG
authors.lastname: Dalvi
authors.forename: C S
authors.initials: CS
authors.lastname: Deodhar
authors.forename: B D
authors.initials: BD
authors.lastname: Joshi