Colorimetric method for determining thiols
Abstract
Abstract METHOD OF ANALYSIS OF PRINCIPAL UTILITY IN DETERMINING THE PRESENCE OF THIOLS IN VARIOUS SAMPLES BY SELECTIVE VISUALIZATION IN THIN-LAYER OR PAPER CHROMATOGRAPHY, OR ELECTROPHORESIS, BUT WHICH ALSO ADAPTS ITSELF, WHEN WORKING WITH ORGANIC SOLUTIONS, TO THE USE OF SPECTROPHOTOMETOGRAPHIC OR SIMPLE COLORIMETRIC DEVICES. THE PROCESS IS ONE WHEREIN THE REAGENT CHEMICAL 2,2''-DITHIOBIS-(5NITROPYRIDINE) REACTS RAPIDLY AND IRREVERSIBLY WITH THE THIOL COMPOUND TO FORM A THIONE DERIVATIVE OF THE REAGENT CHEMICAL AND A DISULFIDE OF THE THIOL COMPOUND. THE RESULTING THIONE MANIFESTS A CHARACTERIZING SPECTRUM HAVING ABSORPTION AT USEFUL WAVELENGTHS, FROM AN ANALYTICAL STANDPOINT IN BOTH THE ULTRAVIOLET AND THE VISUAL RANGES.
Inventors
- 👤 Davide R Grassetti
Bibliographic Details
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