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  • Title: Voltammetric determination of mefenamic acid at lanthanum hydroxide nanowires modified carbon paste electrodes.
    Author: Liu L, Song J.
    Journal: Anal Biochem; 2006 Jul 01; 354(1):22-7. PubMed ID: 16707085.
    Abstract:
    Lanthanum hydroxide nanowires modified carbon paste electrode (LNW/CPE) exhibiting an electrocatalytic response toward the oxidation of mefenamic acid (MFA) is described. The catalytic action of the LNW/CPE on the oxidation of MFA via one-electron and one-proton transfer is attributed to the formation of the porous construction and the increase of efficient surface of the electrode due to the adulteration of LNW with carbon powders. Using the LNW/CPE, a linear sweep voltammetric method for the determination of MFA and other drugs with diphenylamine parent is proposed. A linear range of 2.0 x 10(-11) to 4.0 x 10(-9)mol L(-1) is obtained along with a detection limit of 6.0 x 10(-12)mol L(-1).
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