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The voltammetric behavior of the plasmin‐modified carbon paste electrode in the presence of an electrogenic substrate
Author(s) -
Longchamp Sylvie,
Randriamahazaka Hyacinthe N.,
Nigretto JeanMaxime
Publication year - 1996
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140080217
Subject(s) - substrate (aquarium) , electrode , catalysis , adsorption , electrochemistry , chemistry , cyclic voltammetry , inorganic chemistry , plasmin , carbon paste electrode , chemical engineering , organic chemistry , enzyme , oceanography , engineering , geology
The catalytic properties of plasmin (Pln), irreversibly adsorbed on carbon paste electrodes are considered. The assay of the immobilized enzyme could be achieved with the availability of a specific and electrogenic substrate contained in the solution. The synthesis of this substrate, designated as S2644, was specially initiated for this purpose. The electrochemical properties of the electrode surface upon exposure to solutions containing the substrate or the products involved in the catalysis, or both, were examined by performing cyclic voltammetric measurements directly at the modified electrode. Results showed the dependence of the electrode potential conditions on the surface catalytic activities and the effect of the adsorbed species in the heterogeneous catalysis.