title: Use of cupferron as a precipitant for the determination of impurities in high-purity iron by ICP-AES.
abstract: Impurities in high-purity Fe were determined by ICP-AES using zinc as an internal standard after a precipitation-separation with cupferron. The detection limits (in microg/g) of the impurity elements were as follows: V 0.03, Hf 0.1, Mo 0.1, Nb 0.1, Ga 0.3, Zr 0.6 and Ti 0.9.
authors.affiliation: Institute for Materials Research, Tohoku University, 2-1-1, Katahira, 980-77, Aoba, Sendai, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Danzaki