Carbon Paste Electrodes Made from Different Carbonaceous Materials: Application in the Study of Antioxidants

被引：104
作者：
Apetrei, Constantin [2 ]
Mirela Apetrei, Irina [3 ]
Antonio De Saja, Jose [3 ]
Luz Rodriguez-Mendez, Maria [1 ]
机构：
[1] Univ Valladolid, Dept Inorgan Chem, Escuela Ingn Ind, E-47011 Valladolid, Spain
[2] Dunarea de Jos Univ Galati, Fac Sci, Dept Chem, Galati 800008, Romania
[3] Univ Valladolid, Fac Sci, Dept Condensed Matter Phys, E-47011 Valladolid, Spain
来源：
SENSORS | 2011年 / 11卷 / 02期
关键词：
carbon paste electrode; carbonaceous material; carbon nanotube; cyclic voltammetry; antioxidant; ASCORBIC-ACID; VOLTAMMETRIC DETERMINATION; CYCLIC VOLTAMMETRY; PHENOLIC-COMPOUNDS; OLIVE OILS; DISCRIMINATION; SENSORS; TONGUE; ARRAY; WINE;
D O I：
10.3390/s110201328
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
This work describes the sensing properties of carbon paste electrodes (CPEs) prepared from three different types of carbonaceous materials: graphite, carbon microspheres and carbon nanotubes. The electrochemical responses towards antioxidants including vanillic acid, catechol, gallic acid, L-ascorbic acid and L-glutathione have been analyzed and compared. It has been demonstrated that the electrodes based on carbon microspheres show the best performances in terms of kinetics and stability, whereas G-CPEs presented the smallest detection limit for all the antioxidants analyzed. An array of electrodes has been constructed using the three types of electrodes. As demonstrated by means of Principal Component Analysis, the system is able to discriminate among antioxidants as a function of their chemical structure and reactivity.
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收藏
页码：1328 / 1344
页数：17
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