Indirect Spectrophotometric Determination of Thiamine Hydrochloride in Presence of Sulphite Via Chromium-1,5-Diphenylcarbazide Complex
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منابع مشابه
Specific extraction of chromium as tetrabutylammonium-chromate and spectrophotometric determination by diphenylcarbazide: speciation of chromium in effluent streams.
A very specific, selective, simple, and inexpensive procedure was developed for the speciation of CrVI and CrIII. This method is based on the quantitative extraction of chromate and CrIII (previously oxidized to CrVI) as a tetrabutylammonium-chromate ion-pair in methyl isobutyl ketone (MIBK), and then back extraction and preconcentration with an acidic diphenylcarbazide (DPC) solution. Back ext...
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Zenovia Moldovan and Irinel Adriana Badea Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, 92-96, Sos. Panduri, Bucharest-5, 050663, Romania Andrei A. Bunaciu CROMATEC_PLUS SRL, Analytical Research Department, 18 Sos. Cotroceni, Bucharest 6, 060114, Romania Hassan Y. Aboul-Enein* Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industr...
متن کاملCatalytic Spectrophotometric Determination of Chromium
chromium(III) up to 100 ng mL−1, and for chromium(VI) up to 200 ng mL−1) were obtained, using the “fixed time” method with detection limits of 4.9 ng mL−1 and 3.8 ng mL−1, respectively. The results suggest that at the reaction conditions chromium(VI) is reduced and chromium(III) is oxidized to an intermediate oxidation state and the catalytic action of chromium is due to the formation of an act...
متن کاملNormal and reverse flow injection–spectrophotometric determination of thiamine hydrochloride in pharmaceutical preparations using diazotized metoclopramide
Simple and sensitive normal and reverse flow injection methods for spectrophotometric determination of thiamine hydrochloride (THC) at the microgram level were proposed and optimized. Both methods are based on the reaction between THC and diazotized metoclopramide in alkaline medium. Beer's law was obeyed over the range of 10-300 and 2-90 μg/mL, the limits of detection were 2.118 and 0.839 μg/m...
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International Journal of Pharmaceutical Sciences Review and Research Available online at www.globalresearchonline.net © Copyright protected. Unauthorised republication, reproduction, distribution, dissemination and copying of this document in whole or in part is strictly prohibited. © Copyright protected. Unauthorised republication, reproduction, distribution, 55 K. P. Roopa*, B. K. Jayanna, P....
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ژورنال
عنوان ژورنال: Rafidain Journal of Science
سال: 2013
ISSN: 2664-2786
DOI: 10.33899/rjs.2013.77817