Cerimetric determination of dithionate and polythionates
Talanta
|April 1, 1971
Summary
Ceric sulphate quantitatively oxidizes dithionate, tri-, and tetrathionates to sulfate in acidic conditions. This enables cerimetric determination of these sulfur anions individually or in mixtures with other methods.
Area of Science:
- Analytical Chemistry
- Inorganic Chemistry
Background:
- Polythionates and dithionate are sulfur-containing anions with complex analytical challenges.
- Accurate quantification of these species is crucial in various chemical and environmental contexts.
Purpose of the Study:
- To establish a quantitative cerimetric method for determining dithionate, tri-, and tetrathionates.
- To explore the applicability of cerimetry for analyzing mixtures of these sulfur anions.
Main Methods:
- Oxidation of dithionate, tri-, and tetrathionates using ceric sulphate in a boiling strongly acidic medium.
- Quantitative analysis of the resulting sulfate ions.
Main Results:
- Ceric sulphate quantitatively oxidizes dithionate, tri-, and tetrathionates to sulfate.
- The cerimetric method allows for the individual determination of these anions.
Conclusions:
- Cerimetric titration is a reliable method for the quantitative analysis of dithionate, tri-, and tetrathionates.
- Combining cerimetry with established methods can address the analysis of complex polythionate mixtures.
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