Browsing by Author "Burc, M."

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • Placeholder
    ArticlePublicationMetadata only
    Electrochemical determination of ceftriaxone using polyurethane-modified electrode containing caffeic acid and chitosan
    (Taylor & Francis, 2022-04-13) Hassinea, Chedia Ben Ali; Güngör, Ö.; Burc, M.; Özcan, İ.; Köytepe, S.; Duran, S. T.; Hassinea, Chedia Ben Ali
    The aim of this work was to develop an electrochemical sensor based on caffeic acid and chitosan-containing polyurethane (CAC-PU) films modified platinum electrode for ceftriaxone (CFX) determination. For this aim, firstly the CAC-PU structures were synthesized from three different diisocyanates and these structures were characterized with spectroscopic, thermal and surface analysis techniques. Then, these CAC-PU structures were coated on bare Pt electrode surface for the preparation of CFX selective sensors. Throughout this study several analytical parameters, such as film thickness, electrolyte type, pH effect, and scan rate were investigated by using differential pulse voltammetry (DPV) method. Under the optimized conditions, the voltammetric test results showed best analytical performances for CFX detection with a linear range from 0.1 to 1.5 mM. Limit of detection (LOD) and correlation coefficient (R-2) were obtained 52 mu M and 0.9991 using CAC-PU modified electrode, respectively. Stability of the modified electrode was found to be 96.78% by using reproducibility experiments (n = 10). Applicable of the presented sensor was tested in two synthetic urine samples and recoveries values were obtained 98.7% and 110%, respectively. The prepared modified electrode exhibits high repeatability, fast response, and high sensitivity, which makes it suitable for the detection of CFX in urine samples.
  • Thumbnail Image
    ArticlePublicationOpen Access
    Voltammetric determination of resveratrol using poly(l-phenylalanine)-modified gold electrode
    (Society of Chemists and Technologists of Macedonia, 2020) Gungor, O.; Hassıne, Chedıa Ben Alı; Burc, M.; Duran, S. T.; Hassıne, Chedıa Ben Alı
    In this study, we investigated the electrochemical modification of a gold electrode using poly(L-phenylalanine) and its applicability for the quantification of resveratrol (RESV). The gold electrode was modified with L-phenylalanine employing cyclic voltammetry (CV) in aqueous solution. The detection of RESV with the modified electrode was investigated by square wave voltammetry (SWV) in a phosphate buffer solution (PBS) (pH = 1.2). The analytical calibration curve for RESV showed a linear response with concentration in the oxidation peak current range from 50 to 1000 mu M, with a limit of detection (LOD) of 35.16 mu M and limit of quantitation (LOQ) of 105.5 mu M. The application of the prepared electrochemical sensor was carried out with a standard addition method in red wine samples.