Square-Wave Voltammetry of Decamethylferrocene at the Three-Phase Junction Organic Liquid/Aqueous Solution/Graphite

2001 ◽  
Vol 66 (3) ◽  
pp. 434-444 ◽  
Author(s):  
Šebojka Komorsky-Lovrić ◽  
Milivoj Lovrić ◽  
Fritz Scholz
Keyword(s):  
Aqueous Solution ◽  
Linear Relationship ◽  
Square Wave Voltammetry ◽  
Aqueous Electrolyte ◽  
Graphite Electrode ◽  
Organic Liquid ◽  
Aqueous Electrolytes ◽  
Square Wave ◽  
Wave Voltammetry ◽  
Three Phase

Drops of nitrobenzene and 1,2-dichloroethane with 0.1 M decamethylferrocene (dmfc) are attached to the surface of a paraffin-impregnated graphite electrode and immersed into various aqueous electrolytes. The oxidation of dmfc and the reduction of dmfc+ cation are enabled by simultaneous transfers of anions between the aqueous electrolyte and the organic solvents. Square-wave voltammetry of this reaction is reported. A linear relationship was observed between the peak potentials of dmfc and the standard Galvani potential differences of the anions. The influence of the anion concentration on this relation is explained.

Disposable Pencil Graphite Electrode for Ciprofloxacin Determination in Pharmaceutical Formulations by Square Wave Voltammetry

2020 ◽  
Author(s):  
Guilherme Figueira Alves ◽  
Thalles Pedrosa Lisboa ◽  
Lucas Vinícius Faria ◽  
Davi Marques Farias ◽  
Maria Auxiliadora Costa Matos ◽  
...  
Keyword(s):  
Square Wave Voltammetry ◽  
Graphite Electrode ◽  
Pharmaceutical Formulations ◽  
Pencil Graphite Electrode ◽  
Square Wave ◽  
Wave Voltammetry

Oxidation of Protopine at a Pyrolytic Graphite Electrode Using Cyclic and Square-Wave Voltammetry

2010 ◽  
Vol 22 (24) ◽  
pp. 2879-2883 ◽  
Author(s):  
Eva Vrublová ◽  
Jitka Ulrichová ◽  
Vilím Šimánek ◽  
Miroslav Fojta ◽  
Jan Vacek
Keyword(s):  
Square Wave Voltammetry ◽  
Graphite Electrode ◽  
Pyrolytic Graphite ◽  
Square Wave ◽  
Wave Voltammetry ◽  
Pyrolytic Graphite Electrode

Square-Wave Voltammetric Determination of Acetaldehyde in Povidone

1987 ◽  
Vol 70 (3) ◽  
pp. 566-568
Author(s):  
Robert M Lanniello ◽  
Regina Colonnese ◽  
Nancy Machnicki
Keyword(s):  
Direct Measurement ◽  
Square Wave Voltammetry ◽  
Aqueous Electrolyte ◽  
Accurate Method ◽  
Voltammetric Determination ◽  
Polyvinyl Pyrrolidone ◽  
Square Wave ◽  
Wave Voltammetry

Abstract A rapid, precise, and accurate method is described for the determination of acetaldehyde in povidone (polyvinyl pyrrolidone). The sample is dissolved in a basic aqueous electrolyte and analyzed using square-wave voltammetry. The proposed method allows for direct measurement of acetaldehyde under gentle conditions, thus avoiding loss of analyte due to volatility of acetaldehyde. The method is specific for acetaldehyde in the presence of other aldehydes and povidone process impurities.

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