Spectrophotometric determination of ruthenium with acenaphthenequinonemonoxime

Abstract

Acenaphthenequinonemonoxime has been found to be a selective and sensitive reagent for the spectrophotometric determination of ruthenium in the pH range 4.6-6.0. The dark blue complex formed shows maximal absorbance at 550 nm. Beer's law is obeyed in the range 0-6.57 p.p.m. of ruthenium, the optimal range for determination being 1.50-5.05 p.p.m. The molar absorptivity is 1.5·104 l mol-1 cm -1. The complex has the composition 1:2 metal : ligand. The method is shown to be selective and moderate amounts of other platinum metals do not interfere. © 1971.