title: Extraction-spectrophotometric determination of thallium in high-purity indium.
abstract: Trace amounts of thallium in high-purity indium are separated from the matrix by extraction from 6M hydrochloric acid by di-isopropyl ether. On shaking the extract with Brilliant Green in 0.15M hydrochloric acid, an ion-association complex is formed in the organic phase. Interference of other elements is removed by their reduction with metallic copper and scrubbing. The proposed method permits determination of 10(-5)-10(-6)% thallium in high-purity indium with good precision and accuracy.
authors.affiliation: Department of Analytical Chemistry Warsaw Technical University Warsaw, Poland.
authors.forename: Z
authors.initials: Z
authors.lastname: Marczenko
authors.forename: H
authors.initials: H
authors.lastname: Kałowska
authors.forename: M
authors.initials: M
authors.lastname: Mojski