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Journal of Analytical Chemistry

, Volume 55, Issue 5, pp 454–456 | Cite as

Redox-potentiometric determination of polyethylene glycol-20 000 by its reaction with iodine

  • N. N. Golovnev
  • A. I. Andreev
  • O. S. Romanova
  • O. N. Andronova
Articles
  • 118 Downloads

Abstract

A simple and rapid procedure for the potentiometric determination of polyethylene glycol with a molecular mass of 20000 (PEG-20000) was proposed. The procedure is based on the empirically found stoichiometry of the reaction of PEG-20000 precipitation with iodine. Titration was performed to a constant potential of the I 3 /3I−1 redox couple measured with a platinum electrode. The relative standard deviation for PEG-20000 concentrations from 6.0 to 19.9 g/L was ≤5%.

Keywords

Iodine Polyethylene Glycol Redox Couple Constant Potential Iodine Solution 
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” 2000

Authors and Affiliations

  • N. N. Golovnev
    • 1
  • A. I. Andreev
    • 1
  • O. S. Romanova
    • 1
  • O. N. Andronova
    • 1
  1. 1.Department of ChemistryKrasnoyarsk State UniversityKrasnoyarskRussia

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