REACTION FEATURES OF 18-MOLIBDODIPHOSPHATE AND FOLIN-CIOCALTEU REAGENT WITH PHENOLIC COMPOUNDS
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چکیده
منابع مشابه
Colorimetric determination of potassium by Folin-Ciocalteu phenol reagent.
A method for the colorimetric estimation of manganese by reduction of the phosphomolybdicphosphotungstic acid phenol reagent has been described (Abul-Fadl, 1948). Cobalt was also found to give a similar colour reaction in the presence (but not in the absence) of amino-acids. Conversion of cobalt into the cobaltinitrite did not affect its response to this reaction. As methods for the estimation ...
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In this study we have reported a new, fast and extraction free spectrophotometric procedure for the assessment of caroverine in pharmaceutical raw and tablet dosage forms. In the reported visible spectrophotometric procedure tungstate in Folin-Ciocalteu phenol reagent is reduced in alkaline medium and produces the blue colored chromogen that shows Λmax at 740nm with the calibration range of 2-2...
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ژورنال
عنوان ژورنال: Аналитика и контроль
سال: 2015
ISSN: 2073-1442,2073-1450
DOI: 10.15826/analitika.2015.19.3.001