Selective and sensitive determination of tannic acid using a 1-benzoyl-3-(pyrrolidine) thiourea film modified glassy carbon electrode
作者： Ümmihan Taşkoparan Yılmaz , Elif Çalık , Demet Uzun , Fatma Karipcin , Haşim Yılmaz
DOI: 10.1016/J.JELECHEM.2016.06.037
关键词: Buffer solution 、 Glassy carbon 、 Orange juice 、 Inorganic chemistry 、 Differential pulse voltammetry 、 Chemistry 、 Thiourea 、 Cyclic voltammetry 、 Detection limit 、 Voltammetry
摘要: Abstract 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 deposited on GC in nonaqueous media by cyclic voltammetry. PrTu-GC demonstrated an electrocatalytic effect oxidation TA differential pulse voltammetry (DPV) method 0.1 M Britton Robinson (BR) buffer solution pH 2. Under optimum conditions, linear calibration graphs were obtained over concentration range 2.0 × 10 − 6 to 4.2 × 10 − 5 M. The limit detection (LOD) found as 0.6 μM. proposed applied spiked tea. also for orange juice samples and results experiments agreement that spectrophotometric comparison method.
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