Adsorptive Cathodic Stripping Voltammetric Determination of Dexamethasone in Formulations and Biological Fluids
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منابع مشابه
Development of square-wave adsorptive stripping voltammetric method for determination of acebutolol in pharmaceutical formulations and biological fluids
A validated simple, rapid, sensitive and specific square-wave voltammetric technique is described for the determination of acebutolol (AC) following its accumulation onto a hanging mercury drop electrode in a Britton-Robinson universal buffer of pH 7.5. The optimal procedural conditions were: accumulation potential Eacc = - 0.8 V versus Ag/AgCl/KCl, accumulation duration tacc = 30 s, pulse-ampl...
متن کاملAdsorptive Stripping Voltammetric Determination of Chlorotetracycline in Pharmaceuticals and Biological Fluids through Complexation with Zn (ii)
A sensitive and reliable stripping voltammetric method was developed to determine chlorotetracycline drug. This method is based on the adsorptive accumulation of the complex of this drug with Zn (II) at a hanging mercury drop electrode and then a negative sweep was initiated, which yield a well defined cathodic peak at – 928 mV versus Ag/AgCl reference electrode. To achieve high sensitivity, va...
متن کاملA Validated Adsorptive Stripping Voltammetric Determination of Antidiabetic Agent Pioglitazone HCl in Tablets and Biological Fluids
Square-wave adsorptive cathodic stripping voltammetry was used to determine pioglitazone HCl in Britton Robinson buffer of pH5. The adsorptive cathodic peak was observed at -1.5 V vs. Ag/AgCl. The peak response was characterized with respect to pH, supporting electrolyte, frequency, scan increment, pulse-amplitude, accumulation potential and pre-concentration time. Under optimal conditions, the...
متن کاملVoltammetric characteristics of miconazole and its cathodic stripping voltammetric determination.
Miconazole is reduced at mercury electrode above pH 6 involving organometallic compound formation, responsible for an anomalous polarographic behavior. The electrodic process presents a large contribution of the adsorption effects. The drug can be determined by cathodic stripping voltammetry from 8.0 x 10(-8) to 1, 5 x 10(-6) molL-1 in Britton-Robinson buffer pH 8.0, when pre-accumulated for 30...
متن کاملAdsorptive Cathodic Stripping Voltammetric Determination of Ciprofloxacin in Bulk Powder, Pharmaceutical Dosage Forms and Urine
Purpose: To investigate the electro-reduction behaviour and determination of ciprofloxacin using a hanging mercury drop electrode. Methods: Cyclic voltammograms of ciprofloxacin recorded in Britton – Robinson buffers pH 2 – 5 exhibit a single irreversible cathodic peak. The dependence of the peak current and peak potential values on buffer (nature, pH and concentration) and accumulation conditi...
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ژورنال
عنوان ژورنال: Journal of AOAC INTERNATIONAL
سال: 2009
ISSN: 1060-3271,1944-7922
DOI: 10.1093/jaoac/92.2.597