Analysis of Germanium in the Ore Samples by UV-Visible Spectroscopy

Abstract

A simple, rapid, reproducible and selective UV-Visible spectrophotometric method has been developed for determination of germanium in a week acid medium (pH = 3.0) in the presence of mandelic acid (MA) and malachite green (MG). A single extraction in chlorobenzene was used for the analysis. The germanium-MA ion association complex exhibits an absorption maximum at max = 618 nm with MG as counter ion and has an apparent molar absorptivtity of 1.313 × 105 L mol-1 cm-1. The values obtained by this UV-Visible spectrophotometric method are in good agreement with the values from inductively coupled plasma-mass spectrometer analysis.