Voltammetric Method for the Simultaneous Determination of Melatonin and Pyridoxine in Dietary Supplements Using a Cathodically Pretreated Boron‐doped Diamond Electrode
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2017-04-10 |
| Journal | Electroanalysis |
| Authors | Nurcan Alpar, Pınar Talay Pınar, Yavuz Yardım, Zühre Şentürk |
| Institutions | Van Yüzüncü Yıl Üniversitesi |
| Citations | 49 |
Abstract
Section titled “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.