Adsorptive and Catalytic Cathodic Stripping Voltammetric Determination of Timonacic
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چکیده
منابع مشابه
Voltammetric 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...
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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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The electroreduction behaviour and determination of cefoperazone using a hanging mercury drop electrode were investigated. Cyclic voltammograms of cefoperazone recorded in universal Britton-Robinson buffers pH 3-6 exhibited a single irreversible cathodic peak. The process was adsorption-controlled. Britton-Robinson buffer 0.04 M pH 4.0 was selected as a supporting electrolyte for quantitative p...
متن کاملCathodic adsorptive stripping voltammetric determination of prednisolone in pharmaceutical preparation and human urine.
Differential pulse cathodic adsorptive stripping voltammetric method was developed for the determination of prednisolone based on electrochemical reduction of the drug at a hanging mercury drop electrode (HMDE) in 0.04 M Britton-Robinson buffer pH 3.5. The peak current varied linearly over the concentration range 7.21-144.2 ng/ml prednisolone with limit of detection and limit of quantification ...
متن کاملDetermination of ultra trace Uranium in Lichen by Adsorptive-Cathodic Stripping Voltammetric Technique
Cathodic Stripping Voltammetric (DPAdCSV) method was optimized and validated for the determination of uranium (U) in lichen using choranilic acid (CAA) as complexing agent. The complex can be used for a selective and ultra-trace determination of 'U' by adsorptive cathodic stripping voltammetry (AdCSV) using a hanging mercury drop electrode (HMDE) as working electrode. The method was validated b...
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ژورنال
عنوان ژورنال: Portugaliae Electrochimica Acta
سال: 2011
ISSN: 1647-1571
DOI: 10.4152/pea.201102115