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《Journal of Analytical Science》 2006-03
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Electrocatalystic Investigation of p-Dihydroxybenzene and Catechol with MWCNT Modified Electrode

LI Ming-qi~*,HE Xiao-ying,CAI Duo-chang(College of Chemistry and Chemical Engineering,China West Normal University,Nanchong,Sichuan 637002)  
The electrochemical behavior of p-dihydroxybenzene and catechol on carbon nanotube modified electrode was investigated by cyclic voltammetry and EIS.The catalytic reaction of the two substrate have been compared.The MWCNT modified electrode showed nice electrocatalystic behaviors towards the oxidations and reductions of HQ and CC.The diffusion is the rate determining step of the electrode process.In HAc-NaAc(pH=5.8) solution,the linear range for the determination of HQ is 1.0×10~(-4)~1.0×10~(-2) mol/L with detection limit of 1.0×10~(-5)mol/L.In HAc-NaAc(pH=4.4) solution,the linear range for determination of CC is 4.0×10~(-5)~2.0×10~(-3) mol/L with detection limit of 8.0×10~(-6)mol/L.The modified electrode could be employed for the determination of HQ and CC simultaneously.
【CateGory Index】: O657.1
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