The determination of the titre of ascorbic acid standard solutions

J. Barek, A. Berka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A new method for the determination of the titre of ascorbic acid standard solutions employing potassium dichromate as a primary standard has been developed. In a pyrophosphate medium, the pyrophosphate complex of divalent manganese is oxidized by dichromate to the pyrophosphate complex of tervalent manganese; the latter oxidizes o-tolidine reversibly with formation of the corresponding quinonediinline, which is visually titrated by the ascorbic acid standard solution.

Original languageEnglish
Pages (from-to)57-61
Number of pages5
JournalAnalytical Letters
Volume8
Issue number1
DOIs
Publication statusPublished - 1 Jan 1975
Externally publishedYes

Keywords

  • ascorbic acid
  • dichromate
  • o-tolidine
  • pyrophosphate complex of tervalent manganese
  • titre

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Spectroscopy
  • Clinical Biochemistry
  • Biochemistry, medical
  • Electrochemistry

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