Selective and sensitive determination of tannic acid using a. 1-benzoyl-3-(pyrrolidine) thiourea film modified glassy carbon electrode


Yilmaz U. T., Calik E., UZUN D., KARİPCİN F., Yilmaz H.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, cilt.776, ss.1-8, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 776
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.jelechem.2016.06.037
  • Dergi Adı: JOURNAL OF ELECTROANALYTICAL CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1-8
  • Anahtar Kelimeler: Surface modification, Voltammety, Tannic acid, AMMONIUM PYRROLIDINE DITHIOCARBAMATE, AQUEOUS-SOLUTION, GOLD NANOPARTICLES, CYCLIC VOLTAMMETRY, PASTE ELECTRODE, CHEMILUMINESCENCE, SPECTROSCOPY, DERIVATIVES, SURFACE, FUNCTIONALIZATION
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study the selective determination of tannic acid (TA) was performed using a glassy carbon (GC) electrode modified with 1-benzoyl-3-(pyrrolidine) thiourea (PrTu). PrTu was deposited on the GC electrode in nonaqueous media by cyclic voltammetry. PrTu-GC electrode demonstrated an electrocatalytic effect on the oxidation of TA using differential pulse voltammetry (DPV) method in 0.1 M Britton Robinson (BR) buffer solution of pH 2. Under optimum conditions, linear calibration graphs were obtained over the TA concentration range 2.0 x 10(-6) to 4.2 x 10(-5) M. The limit of detection (LOD) was found as 0.6 M. The proposed electrode was applied to the determination of spiked TA in tea. The proposed method was also applied for the determination of TA in orange juice samples and the results of the experiments were in agreement with that obtained by the spectrophotometric comparison method. (C) 2016 Elsevier B.V. Altrights reserved.