- 作者: Mehmet Aslanoglu,* Aysegul Kutluay, Serpil Karabulut and Sultan Abbasoglu
- 作者服務機構: Department of Chemistry, University of Harran, Sanliurfa 63510, Turkey
- 中文摘要:
A voltammetric method using a poly(1-methylpyrrole) modified glassy carbon electrode was developed
for the quantification of adrenaline. The modified electrode exhibited stable and sensitive current responses
towards adrenaline. Compared with a bare GCE, the modified electrode exhibits a remarkable
shift of the oxidation potentials of adrenaline in the cathodic direction and a drastic enhancement of the
anodic current response. The separation between anodic and cathodic peak potentials (Ep) for adrenaline
is 30mVin 0.1Mphosphate buffer solution (PBS) at pH 4.0 atmodified glassy carbon electrodes. The linear
current response was obtained in the range of 7.5 10-7 to 2.0 10-4Mwith a detection limit of 1.68
10-7 M for adrenaline by square wave voltammetry. The poly(1-methypyrrole)/GCE was also effective to
simultaneously determine adrenaline, ascorbic acid and uric acid in a mixture and resolved the overlapping
anodic peaks of these three species into three well-defined voltammetric peaks in cyclic voltammetry.
The modified electrode has been successfully applied for the determination of adrenaline in
pharmaceuticals. The proposed method showed excellent stability and reproducibility. - 英文摘要: --
- 中文關鍵字: Modified electrodes; 1-Methylpyrrole; Adrenaline; Ascorbic acid; Uric acid.
- 英文關鍵字: --