Abstract
An electrochemical investigation of the interaction of TPPS with BSA on a Hg electrode is reported for the first time. The addition of BSA to TPPS solution results in a decrease of both the reduction and the oxidation current with no change of the peak potentials. In presence of BSA, no new peaks appear, and the standard rate constant k s is not significantly changed. The reaction of TPPS with BSA yields a kind of supramolecular complex TPPS-BSA, which is electrochemically non-active. The equilibrium constant for the complex has been calculated. The decrease of the peak current can be used to determine BSA concentrations.
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Received: 2 August 1998 / Revised: 21 September 1998 / Accepted: 24 September 1998
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Zhang, HM., Zhu, Z. & Li, NQ. Electrochemical studies of the interaction of tetraphenylporphyrin tetrasulfonate (TPPS) with albumin. Fresenius J Anal Chem 363, 408–412 (1999). https://doi.org/10.1007/s002160051211
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DOI: https://doi.org/10.1007/s002160051211