Electrochemical Determination of Methyldopa by Graphene Quantum Dot / 1-butyl-3-methylimidazolium hexafluoro phosphate Nanocomposite Electrode

被引：66
|
作者：
Sanati, Afsaneh L. [1 ]
Faridbod, Farnoush [1 ,2 ]
机构：
[1] Univ Tehran, Sch Chem, Coll Sci, Ctr Excellence Electrochem, Tehran, Iran
[2] Univ Tehran Med Sci, Endocrinol & Metab Mol Cellular Sci Inst, Biosensor Res Ctr, Tehran, Iran
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2017年 / 12卷 / 09期
关键词：
Graphene quantum dots; Methyldopa; Carbon paste electrode; Voltammetry; CARBON-PASTE ELECTRODE; TEMPERATURE IONIC LIQUID; SENSITIVE VOLTAMMETRIC SENSOR; CONTINUOUS CYCLIC VOLTAMMETRY; IMPRINTED POLYMER; FABRICATION; ACETAMINOPHEN; IMMUNOSENSOR; ACID;
D O I：
10.20964/2017.09.71
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Methyldopa is one the important catecholamines used for treatment of high blood pressure. In this study, a nanocomposite electrode was made using graphene quantum dots (GQD) and 1-butyl-3-methylimidazolium hexafluorophosphate (1B3MIPF(6)) in a carbon paste matrix (GQD/1B3MIPF(6)/CPE). The used GQD was synthesized and characterized using transmission electron microscopy (TEM). The electro-oxidation behavior of Methyldopa was investigated on the surface of GQD/1B3MIPF(6)/CPE and finally it was used as a working electrode for the electrochemical determination of Methyldopa in some pharmaceutical and biological samples. The results showed an improvement of similar to 3.2 times in electro-oxidation peak of methyldopa in a dynamic linear range of 0.04-750.0 mu M (limit of detection 0.01 mu M).
引用
收藏
页码：7997 / 8005
页数：9
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