title: Spectrophotometric determination of titanium with N-m-Tolyl-N-phenylhydroxylamine and its application to environmental samples.
abstract: N-m-Tolyl-n-phenylhydroxylamine is proposed for the spectrophotometric determination of titanium. The reagent forms a yellow chloroform-soluble complex with titanium in media with a hydrochloric acid concentration of at least 9M. The apparent molar absorptivity at 380 nm is 7.4 x 10(3) 1.mole(-1).cm(-1). The optimum final concentration range is 0-54 mug of titanium in 10 ml of chloroform. The complex contains the metal and reagent in 1:2 ratio. The proposed method has been successfully applied to the determination of titanium in coal, coal fly-ash, pond sediment and asphalt.
authors.affiliation: Department of Environmental Engineering, Kitami Institute of Technology, Kitami-shi, 090 Japan.
authors.forename: S
authors.initials: S
authors.lastname: Inoue
authors.forename: S
authors.initials: S
authors.lastname: Hoshi
authors.forename: M
authors.initials: M
authors.lastname: Matsubara