Abstract.
The electrochemical behaviors of uric acid (UA) at the penicillamine (Pen) self-assembled monolayers modified gold electrode (Pen/Au) have been studied. The Pen/Au electrode is demonstrated to promote the electrochemical response of UA by cyclic voltammetry (CV). The diffusion coefficient D of UA is 6.97 × 10−6 cm2 s−1. In differential pulse voltammetric (DPV) measurements, the Pen/Au electrode can separate the UA and ascorbic acid (AA) oxidation potentials by about 120 mV and can be used for the selective determination of UA in the presence of AA. The detection limit was 1 × 10−6 mol L−1. The modified electrode shows excellent sensitivity, good selectivity and antifouling properties.
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Wang, L., Bai, J., Huang, P. et al. Selective determination of uric acid in the presence of ascorbic acid using a penicillamine self-assembled gold electrode. Microchim Acta 158, 73–78 (2007). https://doi.org/10.1007/s00604-006-0656-0
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DOI: https://doi.org/10.1007/s00604-006-0656-0