Brilliant Green as a Releasing Agent in Atomic Absorption Spectrometric Determination of Rhodium

Abstract

In atomic absorption spectrometric determination of rhodium, the interfering effects of different cations and anions can be completely eliminated by addition of excess of brilliant green. Brilliant green has two roles: first, it forms stable complex with the analyte, so that the rhodium species reaching the flame will be normally independent of the original composition of the solution, secondly, the high excess of brilliant green scavenge the oxidizing species in the flame producing favourable condition for rhodium atomization.