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Journal of Analytical Chemistry

, Volume 57, Issue 11, pp 1025–1029 | Cite as

12-Molybdophosphoric Acid as an Analytical Reagent for Greater Celandine (Celadonium) Alkaloids

  • Ya. V. Stepnevskaya
  • N. I. Karandeeva
  • L. P. Tsyganok
  • V. I. Tkach
Article
  • 37 Downloads

Abstract

The conditions for determining the total greater celandine alkaloids resulting from a plant by acid infusion were studied. The interaction between the organic cations of alkaloids and the heteropoly anion PMo12O3-40 with the formation of a sparingly soluble stable associate of total celandine alkaloids was examined using UV and IR spectroscopy and quantum-chemical calculations. The associate composition (Alk)3PMo12O40 was found by amperometric titration, and the ionic solubility product was calculated to be equal to (3.0 ± 0.2) × 10–27 at P = 0.95 and n = 5. The synthesized associate was used as an electrode-active substance in the development of an ion-selective electrode with a plasticized membrane that is reversible and selective for the organic cations of greater celandine alkaloids. Procedures for determining total alkaloids in extracts, infusions, and medicinal forms were developed using potentiometry with ion-selective electrodes and amperometric titration.

Keywords

Titration Alkaloid Potentiometry Acid Infusion Solubility Product 
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” 2002

Authors and Affiliations

  • Ya. V. Stepnevskaya
    • 1
  • N. I. Karandeeva
    • 2
  • L. P. Tsyganok
    • 1
  • V. I. Tkach
    • 2
  1. 1.Dnepropetrovsk National UniversityDnepropetrovskUkraine
  2. 2.Dnepropetrovsk State University of Chemical TechnologyDnepropetrovskUkraine

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