引用本文:
张升晖, 胡胜水. 多壁碳纳米管修饰玻碳电极测定乙炔雌二醇[J]. 应用化学,
2005, 22(8): 857-860.
Citation: ZHANG Sheng-Hui, HU Sheng-Shui. Voltammetric Determination of Ethynylestradiol Using Multi-wall Carbon Nanotube Modified Glassy Carbon Electrode[J]. Chinese Journal of Applied Chemistry, 2005, 22(8): 857-860.
Citation: ZHANG Sheng-Hui, HU Sheng-Shui. Voltammetric Determination of Ethynylestradiol Using Multi-wall Carbon Nanotube Modified Glassy Carbon Electrode[J]. Chinese Journal of Applied Chemistry, 2005, 22(8): 857-860.
多壁碳纳米管修饰玻碳电极测定乙炔雌二醇
English
Voltammetric Determination of Ethynylestradiol Using Multi-wall Carbon Nanotube Modified Glassy Carbon Electrode
Abstract:
An electrochemical method was developed for the determination of ethynylestradiol based on the electrocatalytic activity of multi-wall carbon nanotube (MWNT).Owing to the unique and extraordinary properties of MWNT,the oxidation peak current of ethynylestradiol increases remarkably on a MWNT-modified glassy carbon electrode (GCE),accompanied by the lowering of oxidation overpotential.The oxidation peak current varies linearly with the concentration of ethynylestradiol in the range from 1×10-7 to 4×10-5 mol/L.The detection limit is 3×10-8 mol/L after open-circuit accumulation for 3 min.The relative standard deviation (RSD) of ten measurements is 6.2% for 1×10-6 mol/L ethynylestradiol,indicating the good reproducibility.This proposed method was successfully employed in detecting ethynylestradiol in ethynylestradiol tablets.
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