Welcome to Visit Journal of Electrochemistry,Today is Share:

Journal of Electrochemistry

• Articles • Previous Articles     Next Articles

Electrodeposition of Sol-gel Imprinted Films Modified Electrode and its Application for 3,4-Dihydroxybenzoic Acids Determination

WANG Gui-lin,WANG Rong,WU Xia-qin,ZHANG Zong-rang   

  1. (Department of Chemistry,Shanghai Normal University,Shanghai 200234,China
  • Received:2008-05-28 Revised:2008-05-28 Online:2008-05-28 Published:2008-05-28

Abstract: The sol-gel molecularly imprinted films modified glassy carbon electrode was prepared by electrodeposition of tetramethoxysilane(TMOS) and phenyltrimethoxysilane(PTMOS) with chronoamperometry in the presence of template molecules 3,4-dihydroxybenzoic acid(3,4-DHBA) followed by extraction with ethanol.The modified electrode could successfully avoid the polymerization of oxidized 3,4-DHBA and the interference of 2,4-DHBA.A linear concentration response curve was obtained from 1.0 × 10-5 mol·L-1 to 8.0×10-4 mol·L-1,with the detected concentration limit of 5.0 × 10-6 mol·L-1.

Key words: 3, 4-dihydroxybenzoic acid, 2, 4-dihydroxybenzoic acid, molecular imprinted technique, silica sol-gel molecular imprinted films, modified electrode

CLC Number: