Cathodic stripping voltammetric determination of cefaclor in pharmaceutical formulations
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Marcel Dekker Inc
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A sensitive method is described for the determination of cefaclor by cathodic stripping voltammetry at the hanging mercury drop electrode. cefaclor is accumulated at the electrode surface as a mercury salt, which is reduced at -0.67 V. The optimum accumulation potential and accumulation time were +0.15 V and up to 180 s, respectively. Linear calibration graphs were obtained between 3.9 mu g.L-1 to 39 mu g.L-1 and the limit of determination was evaluated to be 1.9 mu g.L-1. The method was applied successfully to the determination of cefaclor in pharmaceutical formulations.
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cefaclor, pharmaceuticals, stripping voltammetry, hanging mercury drop
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Inglês
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Analytical Letters. New York: Marcel Dekker Inc., v. 32, n. 1, p. 97-109, 1999.
