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Abstract
A capacitive immunosensor for the detection of the interaction between benzo[a]pyrene-bovine serum albumin (BaP-BSA) and a monoclonal antibody (designated as MAb10c10) specific to BaP has been developed. MAb10c10 was immobilized on a gold electrode through a self-assembled monolayer of cystamine. Linear sweep voltammetry showed that the charging current decreased with BaP-BSA binding to the antibody on the electrode, and calibration curves were constructed for BaP-BSA and Pyrene-BSA in the range of 0.01 μM-6.00 μM. Selectivity over structurally related analytes is observed.