title: Rapid spectrophotometric determination of ruthenium with diethazine hydrochloride.
abstract: Diethazine hydrochloride reacts with ruthenium(III) instantaneously at high acidity (sulphuric or hydrochloric acid) to form a red 1:1 complex with absorbance maximum at 515nm. A tenfold molar excess of reagent is necessary for complete complexation. Beer's law is obeyed for 1.0-10.4 ppm of ruthenium(III), with optimum concentration range 2-9 ppm. The molar absorptivity is 5.35 x 10(3) 1.mol(-1) .cm(-1).
authors.affiliation: Postgraduate Department of Chemistry, University of Mysore. Manasa Gangotri, Mysore 570 006, India.
authors.forename: H S
authors.initials: HS
authors.lastname: Gowda
authors.forename: P G
authors.initials: PG
authors.lastname: Ramappa