Studies on the Polarographic Catalytic Wave of Cinnamic Acid-Bu4NBr-H2O2 System

A new-type of polarographic catalytic wave of organic compound,the polarographic catalytic wave of cinnamic acid (CA) in the presence of tetra-butylammonium bromide (Bu₄NBr) and H₂O₂, is reported based on the combination of the reduction current of adsorbed CA induced by Bu₄NBr with the catalytic current of CA caused by H₂O₂. The dual enhancement of both Bu₄NBr and the oxidizing agent H₂O₂ on the polarographic current of CA produces excellent sensitivity.