Electrochemical determination diethylstilbestrol by a single-walled carbon nanotube/platinum nanoparticle composite film electrode |
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| Authors: | Junjie Fei Xiaoqin Wen Lanhua Yi Fang Ge Ying Zhang Meihua Huang Xiaoming Chen |
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| Affiliation: | (1) Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan, 411105, PR China;(2) Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Xiangtan, Hunan, 411105, China |
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| Abstract: | Platinum nanoparticles (Ptnano) were prepared and used in combination with single-wall carbon nanotube (SWNT) for fabricating electrochemical sensors with
remarkably improved sensitivity toward diethylstilbestrol (DES). The glassy carbon (GC) electrode modified with SWNT/Ptnano composite film exhibited excellent electrochemical behaviors toward the redox of DES. Compared with the bare GC electrode
and SWNTs film modified GC electrode, the redox peak currents at the SWNTs/Ptnano composite film modified GC electrode was enhanced greatly. The experimental parameters, which influence the peak current
of DES, were optimized. Under optimal conditions, a linear response of DES was obtained in the range from 1.0 × 10−7 to 2.0 × 10−5 mol L−1 (R = 0.997) and with a limit of detect (LOD) of 1.5 × 10−8 mol L−1. The proposed procedure was successfully applied to determine the active ingredient in the DES tablet with satisfactory results. |
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| Keywords: | Diethylstilbestrol Platinum nanoparticles Single-walled carbon nanotube Voltammetry |
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