Trace analysis for aluminum by furnace atomic absorption spectroscopy and differential pulse polarography

Abstract

The determination of total aluminum in water by furnace atomic absorption spectrometry is best performed with a prior sample treatment with 1% HNO3 + 2% H2O2 or Acid Alizarin Violet N: detection limits of a few μgL−1 are reliably obtained. Ionic aluminum may be measured at levels down to 25 μgL−1 by differential pulse polarography of the aluminum complex with Acid Alizarin Violet N; excesses of Fe3+, Cl−, and EDTA interfere.