Determination of Salicylic Acid by Differential Pulse Voltammetry Using ZnO/Al2O3 Nanocomposite Modified Graphite Screen Printed Electrode

被引:31
作者
Ganjali, Mohammad Reza [1 ,2 ]
Nejad, Fariba Garkani [3 ]
Tajik, Somayeh [4 ]
Beitollahi, Hadi [4 ]
Pourbasheer, Eslam [5 ]
Larijanii, Bagher [6 ]
机构
[1] Univ Tehran, Ctr Excellence Electrochem, Sch Chem, Coll Sci, Tehran, Iran
[2] Univ Tehran Med Sci, Biosensor Res Ctr, Endocrinol & Metab Mol Cellular Sci Inst, Tehran, Iran
[3] Grad Univ Adv Technol, Dept Chem, Kerman, Iran
[4] Grad Univ Adv Technol, Environm Dept, Inst Sci & High Technol & Environm Sci, Kerman, Iran
[5] Payame Noor Univ, Dept Chem, POB 19395-3697, Tehran, Iran
[6] Univ Tehran Med Sci, Endocrinol & Metab Res Ctr, Endocrinol & Metab Mol Cellular Sci Inst, Tehran, Iran
来源
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2017年 / 12卷 / 11期
关键词
Salicylic acid; ZnO/Al2O3; nanocomposite; Graphite screen printed electrode; Voltammetry; Real sample analysis; CARBON-PASTE ELECTRODE; CONTINUOUS CYCLIC VOLTAMMETRY; SUPERPARAMAGNETIC FE3O4 NANOPARTICLES; ELECTROCHEMICAL-BEHAVIOR; URIC-ACID; PHARMACEUTICAL FORMULATIONS; IMPRINTED POLYMER; AU MICROELECTRODE; SENSING PLATFORM; ASCORBIC-ACID;
D O I
10.20964/2017.11.49
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A simple strategy for determination of salicylic acid (SA) based on ZnO/Al2O3 nanocomposite modified graphite screen printed electrode (ZnO/Al2O3/SPE) is reported. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were employed to evaluate the performance of the sensor. The ZnO/Al2O3/SPE demonstrated noticeable electrochemical catalytic activity. The oxidation of salicylic acid at ZnO/Al2O3/SPE was accompanied by the considerable decrease in overpotential and dramatic increase in peak current. The response of salicylic acid under the optimized conditions is linear within the ranges of 0.5-80.0 mu M. A low detection limit of 0.25 mu M was found for salicylic acid target. The function of this modified electrode in the concentration measurement of the real samples such as urine and pharmaceuticals was acceptable and approved its practical application.
引用
收藏
页码:9972 / 9982
页数:11
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