METHODS AND OBJECTS OF CHEMICAL ANALYSIS ISSN title: "Metody i obʺekty himičeskogo analiza" An international journal devoted to all aspects of Analytical chemistry ISSN 2413-6166 (Online), ISSN 1991-0290 (Print)
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IDENTIFICATION OF GEOGRAPHICAL ORIGIN OF VEGETABLES AND FRUITS WITH THE USE OF CHEMOMETRIC AND STATISTICAL METHODS.

Ya.N. PUSHKAROVA, A.B. SLEDZEVSKAYA, P.V. SEMYBRATOVA, A.G. GARBUZ, A.N. NEKOS, Yu.V. KHOLIN.

 The paper focuses on the identi-fication of geographical origin of fruits and vegetables based on their composition using statistical and chemometric methods. 58 samples of potatoes and 22 samples of apples from various districts of Kharkiv city and Kharkiv region (Ukraine) were analyzed. Concentrations of Fe, Mn, Zn, Cu, Ni, Pb, Al, Co, Cr, and Cd ions in the samples were determined with the use of atomic absorption spectroscopy. Ar-rays of analytical results were processed with the use of different statistical and chemometric methods, including calculation of the Spearman’s rank correlation coefficients, Kruskal-Wallis and Wilcoxon-Mann-Whitney tests, Principal Component Analysis. Probabilistic neural network were shown to be the efficient tool for identification of geographical origin of potatoes and apples samples.