Ali, Hoshyar SaadiAbdullah, Abdullah A.Pinar, Pinar TalayYardim, YavuzSenturk, Zuhre2025-05-102025-05-1020170039-91401873-357310.1016/j.talanta.2017.04.0372-s2.0-85017509104https://doi.org/10.1016/j.talanta.2017.04.037https://hdl.handle.net/20.500.14720/12002Senturk, Zuhre/0000-0002-0356-9345; Talay Pinar, Pinar/0000-0003-1027-1456; Ali, Hoshyar/0000-0002-9138-485X; Yardim, Yavuz/0000-0002-9587-096XThis paper describes an electroanalytical method for the simultaneous determination of vanillin (VAN) and caffeine (CAF) using an anodically pretreated boron-doped diamond electrode. Selective determination of one compound in the presence of other one was also realized. Both compounds yielded a single irreversible oxidation peak using cyclic voltammetry. The nature of the electrode reaction was found to be diffusion controlled with contribution of adsorption. By using square-wave adsorptive stripping voltammetry after 60 s accumulation under open-circuit voltage, method allowed simultaneous determination of VAN and CAF in phosphate buffer, pH 2.5, with detection limits of 0.234 g (1.54x10(-6) M) and 0.071 mu g mL(-1) (3.66x10(-7)M), respectively. The proposed method was successfully applied in the selective and simultaneous determination of VAN and CAF in commercial food and beverage samples. In addition, for the comparison, high-performance liquid chromatographic method with diode-array detection was developed for the first time for their simultaneous determination.eninfo:eu-repo/semantics/closedAccessVanillinCaffeineSimultaneous Voltammetric DeterminationAnodically Pretreated Boron-Doped Diamond ElectrodeHigh-Performance Liquid ChromatographyCommercial Food And Beverage SamplesArticle170Q1Q138439128501185WOS:000402343200052