Azhar Ali, Sami M A.
Cyclic voltammetric study of a–Methyldopa at carbon paste electrode.
Pak J Pharm Sci Jan ;18(1):6-17.

The cyclic voltammetric behaviour of ?-methyldopa at a silicon oil carbon paste electrode has been reported. This allowed the development of a quantitative method to determine ?-methyldopa in LiCl, KCl, NaCl, HCl, H2SO4 and CH3COOH as supporting electrolytes. For qualitative characteristics, a-methyldopa showed an ECC mechanism in terms of electron transfer reaction (placing it in DPI zone) at carbon paste electrode. The values of transfer coefficients ? and ? were determined. The larger ?Ep values were obtained due to the use of unmodified carbon paste electrode (CPE) has decreased the rate of electron transfer at the surface of the test electrode. The first order rate constant values (ko) were within 0.10-7.78?0.1x10-3 s-1. Adsorption of analyte was also determined at CPE using repeated scan method.

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