Open AccessEstimation of thiamine hydrochloride and sulphite using charge transfer complex reaction
Author(s) -
Basima A. A. Saleem
Publication year - 2021
Publication title -
mağallaẗ sāmarrāʾ al-ʿulūm al-ṣirfaẗ wa-al-taṭbīqiyyaẗ
Language(s) - English
Resource type - Journals
eISSN - 2789-6838
pISSN - 2663-7405
DOI - 10.54153/sjpas.2020.v2i3.51
Subject(s) - thiamine , hydrochloride , chemistry , molar absorptivity , chromatography , absorption (acoustics) , nuclear chemistry , inorganic chemistry , organic chemistry , materials science , physics , optics , composite material
A new spectrophotometric method is used for estimating Thiamine hydrochloride in its pure form and pharmaceutical formulations, the present method depends on the reaction between Thiamine hydrochloride and chrome azurol S to form a red complex which exhibit maximum absorption at 510 nm, the addition of Sulphite to the resulted red complex is bleaching it and this step was used for the determination of Sulphite which is considered an attacker of Thiamine hydrochloride, therefore, this method was developed for determination of Thiamine hydrochloride in presence of Sulphite. The linearity of the proposed method was obeyed Beer’s law from 2 to 48 and 0.04 to 2.4 ppm for Thiamine hydrochloride and Sulphite respectively. Also, the method sensitivity was measured by molar absorptivity values 5.9×104 l.mol-1.cm-1 and 1.68×104 l.mol-1.cm-1 for Thiamine hydrochloride and Sulphite respectively. The present method accuracy (average recovery) 100.06% and 100.04% the precision (RSD) of the method is ±0.98 - ±1.27% and ±0.76 - ±1.47 of Thiamine hydrochloride and Sulphite respectively. This method was applied for the estimation of B1 and SO32- in pharmaceutical preparations and various water samples respectively.