[Voltammetric behaviors of diethylstilbestrol and its determination at multi-wall carbon nanotubes modified glassy carbon electrode].
OBJECTIVE
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.


CONCLUSIONS
The MWNT-DHP modified GCE exhibits catalytic activity to the oxidation of diethylstilbestrol.
Sun
Yan-yi
YY
Department of Chemistry, Wuhan University, Wuhan 430072, China.
Wu
Kang-bing
KB
Hu
Sheng-shui
SS
D002244:Carbon / Q000737:chemistry*; D004054:Diethylstilbestrol / Q000032:analysis* / Q000737:chemistry; D004563:Electrochemistry; D004566:Electrodes; D006863:Hydrogen-Ion Concentration; D036103:Nanotechnology
D004054:Diethylstilbestrol; D002244:Carbon