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Spectrophotometric microgram determination of copper in organic compounds by wet or oxygen flask combustion

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Spectrophotometric Microgram Determination of Copper in Organic Compounds by Wet or Oxygen Flask Combustion

A spectrophotometric method for the microgram (2–30 ppm) determination of copper in organic compounds after wet digestion or oxygen flask combustion has been developed. The copper content is determined through the formation of the molybdenum blue complex, which is formed by the addition of 1 ml of each of 1% KCN, 1% phosphomolybdic acid and 1M HCl solutions, in the order mentioned. The absorbance is measured at 725 nm. A series of 10 compounds with 10–40% copper gave highly satisfactory results. The total average error is ±0.05% and the overall standard deviation value is 0.220. The method described is rapid, simple and accurate; the reagents required are cheap and readily available.

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Author notes

  1. M. E. M. Hassouna

    Present address: Chemistry Department, Faculty of Science at Beni-Suef, Cairo University, Cairo

Authors and Affiliations

  1. Microanalytical Research Laboratory, National Research Centre, Dokki, Cairo, Egypt

    Y. A. Gawargious, M. E. M. Hassouna & H. N. A. Hassan

Authors
  1. Y. A. Gawargious
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  2. M. E. M. Hassouna
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  3. H. N. A. Hassan
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Gawargious, Y.A., Hassouna, M.E.M. & Hassan, H.N.A. Spectrophotometric microgram determination of copper in organic compounds by wet or oxygen flask combustion. Mikrochim Acta 87, 15–21 (1985). https://doi.org/10.1007/BF01201982

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  • DOI: https://doi.org/10.1007/BF01201982

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