Dairy products are rich in various nutrients: micro- and macroelements, vitamins, proteins, fats, etc. Thin-layer (planar) chromatography (TLC). It is a method of analysis of various substances and mixtures of compounds, which is used in the centers of State Sanitary and Epidemiological Surveillance for standardization and metrology. Thin-layer chromatography is used in the analysis of dairy products for mineral substances in order to assess and control quality. In this paper, the analysis of different milk samples for the content of microelements, such as iron (III), copper (II), cobalt (II), nickel (II) ions, is carried out by TLC. The indicators of the retention factor – Rf are presented. The expediency of using the thin-layer chromatography method in the analysis of the quantitative and qualitative composition of food products is demonstrated. The content of microelements obtained during the study was compared with the values of the maximum permissible concentration (MPC) according to the state standard. The studied samples comply with the specified quality standards; therefore, they are safe for human health.
