title: Spectrophotometric determination of cobalt with phenanthrenequinone monoxime.
abstract: Phenanthrenequinone monoxime reacts with cobalt to form a yellow-orange insoluble 1:3 (cobalt:ligand) complex which is extractable into chloroform in the pH range 4.45-8.0. The determination of cobalt is carried out at 470 mmu. Beer's law is obeyed over the concentration range 0-3.0 ppm of cobalt. The sensitivity is 0-00336 mug of Co/cm(2) for 0.001 absorbance. The effect of a number of foreign ions has been studied.
authors.affiliation: Department of Chemistry University of Delhi, Delhi-7, India.
authors.forename: K C
authors.initials: KC
authors.lastname: Trikha
authors.forename: M
authors.initials: M
authors.lastname: Katyal
authors.forename: R P
authors.initials: RP
authors.lastname: Singh