Voltammetric Method for the Simultaneous Determination of Melatonin and Pyridoxine in Dietary Supplements Using a Cathodically Pretreated Boron‐doped Diamond Electrode. Issue 7 (10th April 2017)

• Record Type: Journal Article
• Authors: Alpar, Nurcan; Pınar, Pınar Talay; Yardım, Yavuz; Şentürk, Zühre
• Is Part Of: Electroanalysis. Volume 29:Issue 7(2017)
• Page Start: 1691
• Page End: 1699
• Publication Date: 2017-04-10
• Subjects: Melatonin -- Pyridoxine -- Simultaneous determination -- Boron-doped diamond electrode -- Dietary supplements; Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.201700077
• Languages: English
• ISSNs: 1040-0397

Abstract

Abstract: The simultaneous voltammetric determination of melatonin (MT) and pyridoxine (PY) has been carried out at a cathodically pretreated boron‐doped diamond electrode. By using cyclic voltammetry, a separation of the oxidation peak potentials of both compounds present in mixture was about 0.47 V in Britton‐Robinson buffer, pH 2. The results obtained by square‐wave voltammetry allowed a method to be developed for determination of MT and PY simultaneously in the ranges 1–100 μg mL −1 (4.3×10 −6 –4.3×10 −4 mol L −1 ) and 10–175 μg mL −1 (4.9×10 −5 –8.5×10 −4 mol L −1 ), with detection limits of 0.14 μg mL −1 (6.0×10 −7 mol L −1 ) and 1.35 μg mL −1 (6.6×10 −6 mol L −1 ), respectively. The proposed method was successfully to the dietary supplements samples containing these compounds for health‐caring purposes. Abstract :