Electroanalysis
Electroanalysis
4 years ago

Adaptation of The Experimental Background (ATEB) Method in Voltammetric Determination of Thujone in Herbal Matrices

Adaptation of The Experimental Background (ATEB) Method in Voltammetric Determination of Thujone in Herbal Matrices
Małgorzata Jakubowska, Łukasz Górski, Mateusz Kowalcze
In this work, a new baseline correction method, named the Adaptation of The Experimental Background (ATEB), based on the subtraction of the blank sample signal (registered for solution without an analyte, for example a supporting electrolyte), was introduced. However, the method was something more than the simple subtraction of the blank sample signal. An innovation of the algorithm consisted in improving of the blank sample signal through application of the polynomials. Operation of the algorithm was demonstrated in determination of thujone in the synthetic and real samples. The synthetic samples were composed of two different mixtures of the quasi-absinthe herbal matrices spiked with 0.7–14 mg L−1 of thujone. The measurements were conducted with or without presence of Cu2+, which is an interfering agent originating from production of absinthe like alcoholic beverages. The real sample was Rodnik's absinthe, likewise spiked with thujone. Application of the ATEB method enabled calculation of the calibration lines with very good correlation (not lower than 0.997).

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/elan.201700307

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