TY - JOUR A2 - Richter, Pablo AU - Kowalcze, Mateusz AU - Wyrwa, Jan AU - Dziubaniuk, Małgorzata AU - Jakubowska, Małgorzata PY - 2018 DA - 2018/02/20 TI - Voltammetric Determination of Anethole on La2O3/CPE and BDDE SP - 2158407 VL - 2018 AB - In this work, DPV determination of anethole was presented using various carbon, two-diameter (1.5 and 3 mm) electrodes, that is, BDD, GC, CP, and CP doped by La2O3 and CeO2 nanoparticles. La2O3/CPE to our best knowledge was proposed first time. Cyclic voltammograms confirmed totally irreversible electrode electrooxidation process, controlled by diffusion, in which two electrons take part. The most satisfactory sensitivity 0.885 ± 0.016 µA/mg L−1 in 0.1 mol L−1 acetate buffer was obtained for La2O3/CPE with the correlation coefficient r of 0.9993, while for BDDE it was 0.135 ± 0.003 µA/mg L−1 with r of 0.9990. The lowest detection limit of 0.004 mg L−1 was reached on La2O3/CPE (3 mm), what may be compared with the most sensitive conjugate methods, but in the proposed approach, no sample preparation and analyte separation was needed. Anethole was successfully determined in specially prepared ethanol extracts of herbal mixtures of various compositions, which imitated real products. The proposed procedure was verified in analysis of commercial products, that is, anise essential oil, which contains a large concentration of anethole, and in alcohol drinks like Metaxa, Ouzo, and Rakija, in which the considered analyte occurs on trace levels. Structure and properties of the considered nanopowders and graphite pastes were investigated by EDX, SEM, and EIS. SN - 2090-8865 UR - https://doi.org/10.1155/2018/2158407 DO - 10.1155/2018/2158407 JF - Journal of Analytical Methods in Chemistry PB - Hindawi KW - ER -