scholarly journals Electrochemical Oxidation and Reduction of Flavin Mononucleotide Adsorbed on a Mercury Electrode Surface

1981 ◽  
Vol 54 (3) ◽  
pp. 884-890 ◽  
Author(s):  
Tadaaki Kakutani ◽  
Kenji Kano ◽  
Shinji Ando ◽  
Mitsugi Senda
Keyword(s):  
Electrochemical Oxidation ◽  
Electrode Surface ◽  
Mercury Electrode ◽  
Flavin Mononucleotide

The Effect of p-Toluidine on the Two-Step Electroreduction of Zn(II) in Water-Methanol and Water-Dimethylformamide

1999 ◽  
Vol 64 (4) ◽  
pp. 585-594 ◽  
Author(s):  
Barbara Marczewska
Keyword(s):  
Electron Transfer ◽  
Binary Mixtures ◽  
Rate Constant ◽  
Rate Constants ◽  
Electrode Surface ◽  
Mercury Electrode ◽  
Forward Rate ◽  
Solvent Molecules ◽  
Activated Complex

The acceleration effect of p-toluidine on the electroreduction of Zn(II) on the mercury electrode surface in binary mixtures water-methanol and water-dimethylformamide is discussed. The obtained apparent and true forward rate constants of Zn(II) reduction indicate that the rate constant of the first electron transfer increases in the presence of p-toluidine. The acceleration effect may probably be accounted for by the concept of the formation on the mercury electrode an activated complex, presumably composed of p-toluidine and solvent molecules.

Reactions of Phospholipase A2at a Mercury Electrode Surface

1997 ◽  
Vol 101 (2) ◽  
pp. 167-174 ◽  
Author(s):  
Shaowei Chen ◽  
Héctor D. Abruña
Keyword(s):  
Electrode Surface ◽  
Mercury Electrode

Interaction of polyphosphate with the mercury electrode surface

1968 ◽  
Vol 16 (3) ◽  
pp. 313-318 ◽  
Author(s):  
Vladimír Vetterl ◽  
Jiří Boháček
Keyword(s):  
Electrode Surface ◽  
Mercury Electrode

scholarly journals Quantitative determination of glycyrrhizinic acid by square-wave voltammetry and high-pressure liquid chromatography

2003 ◽  
Vol 48 ◽  
pp. 3-8
Author(s):  
Aneta Dimitrovska ◽  
Valentin Mircevski ◽  
Svetlana Kulevanova
Keyword(s):  
High Pressure ◽  
Quantitative Determination ◽  
Electrode Surface ◽  
Square Wave Voltammetry ◽  
Mercury Electrode ◽  
Voltammetric Method ◽  
Square Wave ◽  
Glycyrrhizinic Acid ◽  
Wave Voltammetry

Novel adsorptive stripping square-wave voltammetric method as well as a new high-pressure liquid chromatographic method for direct determination of glycyrrhizinic acid in dosage pharmaceutical preparation, used against virus infections, have been developed. Glycyrrhizinic acid is an electrochemically active compound, which undergoes irreversible reduction on a mercury electrode surface in an aqueous medium. Its redox properties were studied thoroughly by means of square-wave voltammetry, as one of the most advanced electroanalytical technique. The voltammetric response depends mainly on the pH of the medium, composition of the supporting electrolyte, as well as the parameters of the excitement signal. It was also observed that the voltammetric properties strongly depend on the accumulation time and potential, revealing significant adsorption of glycyrrhizinic acid onto the mercury electrode surface. Upon this feature, an adsorptive stripping voltammetric method for quantitative determination of glycyrrhizinic acid was developed. A simple, sensitive and precise reversed phase HPLC method with photodiode array UV detection has also been developed, mainly for comparison and conformation of the results obtained with the voltammetric method.

Sign in / Sign up

Export Citation Format

Share Document