Spectrophotometric determination of ajmaline and brucine by Folin Ciocalteu’s reagent

Author:

Singh Dhruv1,Srivastava Bhavana1,Sahu Archana1

Affiliation:

1. Analytical Research Laboratory, Department of Chemistry, Harcourt Butler Technological Institute, Kanpur - 208 002, India

Abstract

Arapid and simple spectrophotometric procedure is described for the determination of ajmaline and brucine. The method is based on the development of blue colored product due to reduction of tungstate and/or molybdate in Folin Ciocalteu?s reagent (FCR) by ajmaline and brucine in alkaline medium. The color is stable for more than 48 h. The chromogenic reaction has ?max at 540 nm with molar absorptivity 1.64 x 104 and 2.37 x 103 l mol-1 cm-1 in the Beer?s law range 1?8 ?g ml-1 and 10?100 ?g ml-1 for ajmaline and brucine, respectively.

Publisher

National Library of Serbia

Subject

General Chemistry

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