title: Complexometric determination of molybdenum(VI).
abstract: In acidic medium molybdenum(VI) forms a stable complex on boiling with excess of DCTA and hydroxylamine hydrochloride. Molybdenum can then be determined by back-titration of the excess of DCTA either with zinc chloride at pH 5-5.5 or with thorium nitrate at pH 3-4.5, Xylenol Orange being used as indicator in both cases. A simple method for the determination of molybdenum in the presence of moderate amounts of tungsten is also described.
authors.affiliation: Laboratory of Analytical Chemistry J. Heyrovský Polarographic Institute Czechoslovak Academy of Sciences Prague 1, Jilská 16 Czechoslovakia.
authors.forename: R
authors.initials: R
authors.lastname: Pribil
authors.forename: V
authors.initials: V
authors.lastname: Veselý