Potentiometric Flow Injection Analysis of Drotaverine Hydrochloride in Pharmaceutical Preparations

Ibrahim, Hosny and Issa, Yousry M. and Abu‐Shawish, Hazem M. (2005) Potentiometric Flow Injection Analysis of Drotaverine Hydrochloride in Pharmaceutical Preparations. Analytical Letters, 38 (1). pp. 111-132. ISSN 0003-2719

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Official URL: https://www.tandfonline.com/doi/full/10.1081/AL-20...

Abstract

Five poly (vinyl chloride) (PVC) membrane electrodes for the determination of drotaverine hydrochloride (DvCl) were constructed and fully characterized in terms of composition, life span, response time, usable pH range, working concentration range, and temperature. The membranes of these electrodes consist of drotaverinium‐silicotungstate (Dv‐ST), silicomolybdate (Dv‐SM), phosphotungstate (Dv‐PT), phosphomolybdate (Dv‐PM), or tetraphenylborate (Dv‐TPB) ion associations dispersed in PVC matrix with dibutyl phthalate plasticizer. The electrodes showed near‐Nernstian response over the concentration range of 2.0 × 10−6 to 1.0 × 10−2 M DvCl and were applied to the potentiometric determination of drotaverinium ion in pharmaceutical preparations in steady‐state and flow injection (FI) conditions with average recoveries of 98.1–102.2% and relative standard deviation of 0.308–1.310%. The electrodes exhibit good selectivity for DvCl with respect to a large number of inorganic cations, organic cations, sugars, and amino acids. The sensitivities of these electrodes are high enough to measure as low as 0.87 µg/mL of DvCl which permits the determination of the K sp values of the ion associates used.

Item Type: Article
Subjects: Q Science > QD Chemistry
Depositing User: أ.د. حازم محمد عبد الحميد أبو شاويش
Date Deposited: 02 Apr 2018 08:10
Last Modified: 02 Apr 2018 08:10
URI: http://scholar.alaqsa.edu.ps/id/eprint/574

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