Journal of Analytical Chemistry

, Volume 61, Issue 2, pp 119–123 | Cite as

Morin as a spectrophotometric reagent for gold

  • M. Balcerzak
  • A. Kosiorek
  • E. Swiecicka


A reaction of morin with gold(III) in a hydrochloric acid medium has been studied. A redox reaction occurring in the examined system has been identified. The oxidized form of morin (λmax at 291 nm), being the product of the reaction, has been used as the basis of the spectrophotometric method for the determination of gold. Gold can be determined in the concentration range of 0.2–12 μg mL−1 (RSD in the range of 0.89–2.38%). The molar absorptivity at 291 nm is equal to 2.02 × 104 L mol−1. cm−1. The developed method was applied to the determination of gold (0.04%) in a cosmetic cream.


Gold Analytical Chemistry Hydrochloric Acid Acid Medium Redox Reaction 
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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • M. Balcerzak
    • 1
  • A. Kosiorek
    • 1
  • E. Swiecicka
    • 1
  1. 1.Department of Analytical ChemistryWarsaw University of TechnologyWarsawPoland

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