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Cathodic stripping voltammetry of orotic acid vitamin b 13 at the hanging mercury drop electrode hmde



Cathodic stripping voltammetry of orotic acid vitamin b 13 at the hanging mercury drop electrode hmde



Fresenius Zeitschrift fuer Analytische Chemie 330(2): 146-148



Controlled adsorptive accumulation of orotic acid (vitamin B13) at the hanging mercury drop electrode (HMDE) provides the basis for the direct stripping measurement of that compound in nanomolar concentration. Differential pulse voltammetry applied to a sample at pH 11.20 fixed in NaOH has a detection limit of 5.0 .times. 10-10 mol/l of orotic acid (with 3 min of preconcentration). The cathodic stripping response is evaluated with respect to experimental parameters such as preconcentration time, preconcentration potential, bulk concentration and other parameters. Cathodic stripping voltammetry can be proposed for the determination of the orotic acid, the reproducibility of this method was studied.

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Accession: 004888596

Download citation: RISBibTeXText

DOI: 10.1007/bf00470728


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