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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
Articles

Abstract

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.

Keywords

Gold Analytical Chemistry Hydrochloric Acid Acid Medium Redox Reaction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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