• Elemental characterisation of aluminium used in reactors by optical emission spectroscopic methods

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    • Keywords


      Aluminium; optical emission spectroscopy; excitation sources; precision; elemental characterisation

    • Abstract


      Using AC spark, AC arc and DC arc excitations in optical emission spectroscopic systems, the Al metal used in reactors can be characterised for its minor or trace element composition. The best precision of ± 6% is obtained with an AC spark in which the rod sample is taken as a self electrode and elements Cu, Fe, Mn, Si and Ti are determined in the concentration range 0·01–1%. The oxide powder sample with DC arc excitation provides best minimum detection limits of 10 ppm in general and 21 trace elements are determined by it. The AC arc method also uses oxide powder standards prepared synthetically and determines B and Mg in addition to the elements determined in AC spark excitation with a precision of ±9%.

    • Author Affiliations


      L C Chandola1

      1. Spectroscopy Division, Bhabha Atomic Research Centre, Trombay, Bombay - 400 085, India
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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