title: [Determination of trace rare earth impurities in the high-purity lanthanum oxide by chemical spectrographic analysis].
abstract: The determination of trace rare earth impurities in the high-purity Lanthanum oxide by chemical spectrographic analysis is reported in this paped. The matrix, La2O3, was separated by the extraction-eluating resin P507. The remained rare earth impurities were absorpted by carbon powder. The rare earth impurities absorpted were determinated in carrier KBH4 by spectrographic analysis. The trace rare earth impurities in 99.9999% La2O3 can be determinated by this method.
authors.affiliation: National Analytical Research Center of Electrochemistry and Spectroscopy Changchun Institute of Applied Chemistry, Academia Sinica, 130022 Changchun.
authors.forename: S
authors.initials: S
authors.lastname: Wang
authors.forename: W
authors.initials: W
authors.lastname: Li
authors.forename: X
authors.initials: X
authors.lastname: Yan
authors.forename: C
authors.initials: C
authors.lastname: Peng