title: [Determination of 14 rare earth impurities in Y2O3 by petroleum sulfoxide extraction chromatography].
abstract: Petroleum sulfoxide-NH4SCN extraction chromatography was developed for the separation of Y from other rare earth elements. Some chromatographic parameters were chosen and separation factors between Y and other rare earth elements were determined. A column of resin coated with petroleum sulfoxide was used. The Y in the sample was eluted with NH4SCN, then titrated with EDTA. The recovery was 67%-120% and relative standard deviation +/- 4.0%-19.4%. This method can be applied to the determination of trace amounts of rare earth impurities in Y2O3 with a purity of 99.9999%-99.99999%.
authors.affiliation: Changchun Institute of Applied Chemistry, Academia Sinica, 130021 Changchun.
authors.forename: W
authors.initials: W
authors.lastname: Li
authors.forename: C
authors.initials: C
authors.lastname: Peng
authors.forename: P
authors.initials: P
authors.lastname: Yuan
authors.forename: W
authors.initials: W
authors.lastname: Qi