Electrochemical determination of hydrochlorothiazide and folic acid in real samples using a modified graphene oxide sheet paste electrode

被引：65
作者：
Beitollahi, Hadi [1 ]
Hamzavi, Mozhdeh [2 ]
Torkzadeh-Mahani, Masoud [3 ]
机构：
[1] Grad Univ Adv Technol, Inst Sci & High Technol & Environm Sci, Dept Environm, Kerman, Iran
[2] Grad Univ Adv Technol, Dept Chem, Kerman, Iran
[3] Grad Univ Adv Technol, Dept Biotechnol, Inst Sci & High Technol & Environm Sci, Kerman, Iran
来源：
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2015年 / 52卷
关键词：
Hydrochlorothiazide; Folic acid; Carbon paste electrode; Graphene oxide sheets; SELECTIVE VOLTAMMETRIC DETERMINATION; GOLD NANOPARTICLES; 1ST REPORT; URIC-ACID; CARBON; SENSOR; NOREPINEPHRINE; ACETAMINOPHEN; EPINEPHRINE; METHYLDOPA;
D O I：
10.1016/j.msec.2015.03.031
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
A new ferrocene-derivative compound, 2-chlorobenzoyl ferrocene, was synthesized and used to construct a modified graphene oxide sheet paste electrode. The electrooxidation of hydrochlorothiazide at the surface of the modified electrode was studied. Under optimized conditions, the square wave voltammetric (SWV) peak current of hydrochlorothiazide increased linearly with hydrochlorothiazide concentration in the range of 5.0 x 10(-8) to 2.0 x 10(-4) M and a detection limit of 20.0 nM was obtained for hydrochlorothiazide. The diffusion coefficient and kinetic parameters (such as electron transfer coefficient and the heterogeneous rate constant) for hydrochlorothiazide oxidation were also determined. The prepared modified electrode exhibits a very good resolution between the voltammetric peaks of hydrochlorothiazide and folic acid which makes it suitable for the detection of hydrochlorothiazide in the presence of folic acid in real samples. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：297 / 305
页数：9
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