title: Use of matrix-modifiers in atomic-absorption determination of chromium in argillites.
abstract: The direct atomic-absorption determination of chromium in argillites, without preliminary concentration and separation, has been studied. A map of selective flame zones for determining Cr in argillites has been designed. An express method for determining Cr in Estonian argillites has been suggested.
authors.affiliation: Institute of Chemistry, Estonian Academy of Sciences, Tallinn, Estonian SSR, USSR.
authors.forename: E
authors.initials: E
authors.lastname: Klaos
authors.forename: V
authors.initials: V
authors.lastname: Odinets