Summary
A combined procedure including enrichment by adsorption onto activated carbon and direct current (dc) arc emission spectrography has been investigated for elemental determination. In order to obtain reproducible volatilization of the analyte in the dc arc, the activated carbon was mixed with graphite powder and the arc operated in an argon atmosphere. The procedure has been used to determine some trace impurities in high-purity aluminium metal. The analytical error in the concentration range of 10−3–10−5% was less than 10% and the relative standard deviation was below 12%.
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ElÇi, L., Doĝan, M. Elemental trace determinations in aluminium by enrichment onto activated carbon combined with direct current arc optical emission spectrography. Z. Anal. Chem. 330, 610–613 (1988). https://doi.org/10.1007/BF00473777
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DOI: https://doi.org/10.1007/BF00473777