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  • Title: [Voltammetric behaviors of diethylstilbestrol and its determination at multi-wall carbon nanotubes modified glassy carbon electrode].
    Author: Sun YY, Wu KB, Hu SS.
    Journal: Yao Xue Xue Bao; 2003 May; 38(5):364-7. PubMed ID: 12958841.
    Abstract:
    AIM: To fabricate multi-wall carbon nanotube (MWNT) modified electrode and study the electrochemical behaviors of diethylstilbestrol at the MWNT-modified electrode. METHODS: Cyclic voltammetry and linear sweep voltammetry. RESULTS: The oxidation peak current of diethylstilbestrol increased remarkably and the peak potential shifted negatively at the MWNT-dihexadecyl hydrogen phosphate (DHP) modified glassy carbon electrode (GCE), in contrast to that at the bare GC electrode and DHP-modified GC electrode. The oxidation peak current is linear with the concentration of diethylstilbestrol over the range from 1 x 10(-8) to 2 x 10(-6) mol.L-1. The detection limit was 2.5 x 10(-9) mol.L-1. The relative standard deviation (n = 10) was 2.9% for 1 x 10(-6) mol.L-1 diethylstilbestrol. CONCLUSION: The MWNT-DHP modified GCE exhibits catalytic activity to the oxidation of diethylstilbestrol.
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