Electrochemical behavior of folic acid on mercury meniscus modified silver solid amalgam electrode |
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Authors: | L. Band?uchová ,R. &Scaron ele&scaron ovská ,T. Navrá til,J. Chý lková |
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Affiliation: | aUniversity of Pardubice, Faculty of Chemical Technology, Institute of Environmental and Chemical Engineering, Studentská 573, 532 10 Pardubice, Czech Republic;bJ. Heyrovský Institute of Physical Chemistry of the AS CR, v.v.i., Dolejškova 3, 18223 Prague 8, Czech Republic |
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Abstract: | Voltammetric behavior of folic acid and folates has been investigated using direct current voltammetry, differential pulse voltammetry and adsorptive stripping differential pulse voltammetry at a mercury meniscus modified silver solid amalgam electrode (m-AgSAE). The optimum conditions have been found for their determination in a 1:9 mixture of methanol and aqueous acetate buffer, with the limit of detection about 0.5 nmol L−1. RSD at this concentration level amounted to less than 4%. Practical applicability of the newly developed method was verified by analysis of three vitamin preparations and of two multivitamin juices. |
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Keywords: | Folic acid Vitamins Voltammetry Mercury meniscus modified silver solid amalgam electrode Hanging mercury drop electrode |
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