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 language | English |
|---|---|
| Pages (from-to) | 57-61 |
| Number of pages | 5 |
| Journal | Analytical Letters |
| Volume | 8 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 1975 |
| Externally published | Yes |
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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Cite this
Barek, J., & Berka, A. (1975). The determination of the titre of ascorbic acid standard solutions. Analytical Letters, 8(1), 57-61. https://doi.org/10.1080/00032717508060361