Separation of trace elements from high-purity metals by simulaneous electrolytic dissolution and electrodeposition of the matrix on a mercury cathode: Part 1. Determination of aluminum in iron by electrothermal atomic absorption spectrometry

Abstract

High-purity iron is effectively dissolved by anodic oxidation and the resulting matrix ions are immediately deposited on a flowing mercury cathode from 2 ml of sodium acetate/potassium chloride electrolyte. Aluminium (5 ng) in this electrolyte was determined by direct injection into a graphite furnace for atomic absorption spectrometry. The high-purity iron was found to contain 0.34 (±0.03) μg g −1 aluminum.