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Journal of Analytical Chemistry

, Volume 56, Issue 4, pp 364–367 | Cite as

Solvent Extraction–Photometric Determination of Palladium Using Complexation with 1-(2-Pyridylazo)-2-Naphthol

  • T. V. Popova
  • V. L. Tolmachev
  • S. V. Al' Ansari
  • N. V. Shcheglova
Article
  • 52 Downloads

Abstract

Palladium(II) complexation with 1-(2-pyridylazo)-2-naphthol (PAN) in aqueous solutions followed by extraction with chloroform and photometric detection was studied. The best conditions were found for the formation of the complex in an aqueous solution and for its extraction with chloroform that provided a sufficient degree of binding palladium ions. The stability constant of the complex cation PdX+, which is extracted by chloroform as an ion pair [PdX]+[An] (An– CH3COO), was calculated using the methods proposed by Rossotti (log Kstab= 18.73) and Komar' (log Kstab= 18.82). The equilibrium constant of the complexation reaction was also calculated (5.45 × 104). It was shown that components of nonferrous alloys affect the determination of palladium by photometry as its complex or ion pair with PAN in chloroform.

Keywords

Aqueous Solution Analytical Chemistry Chloroform Palladium Solvent Extraction 
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

© MAIK “Nauka/Interperiodica” 2001

Authors and Affiliations

  • T. V. Popova
    • 1
  • V. L. Tolmachev
    • 1
  • S. V. Al' Ansari
    • 1
  • N. V. Shcheglova
    • 1
  1. 1.Maryi State UniversityIoshkar OlaRussia

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