Abstract
In 0.1mol/L phosphate buffer solution (pH 3.0), the voltammetry behaviors of curcumin at a glassy carbon electrode have been studied.One pair of current peaks of the voltammogram may be attributed to a reversible one-electron transfer of curcumin molecules at the glassy carbon electrode.A new method, the differential pulse voltammetry,for curcumin determination is described. The adsorptive potential of curcumin is (+0.8) V(vs. SCE),while its peak potential of curcumin is +0.386V(vs. SCE).The peak current is proportional to the concentration of curcumin over the rage of 1.0×10~(-8)mol/L ~2.5×10~(-7)mol/L.A detection limit of 4.0×10~(-9)mol/Lof curcumin can be estimated. The method is simple, rapid, sensitive and reliable.
Keywords
Curcumin, Glassy carbon electrode, Differential pulse voltammetry
Publication Date
2005-08-28
Online Available Date
2005-08-28
Revised Date
2005-08-28
Received Date
2005-08-28
Recommended Citation
Ping WU, Wei CHEN, Ya-feng ZHANG, Xin-hua LIN.
Electrochemical Behavior and Determination of Curcumin[J]. Journal of Electrochemistry,
2005
,
11(3): 346-349.
DOI: 10.61558/2993-074X.1667
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol11/iss3/21
