QUALITY MARKERS FOR WATER FROM VENDING MACHINES AND SPRINGS

It is known that the quality of drinking water has a strong impact on the health of modern people. This largely depends on the chemical and microbiological composition of the water consumed. At present, there is no established list of marker indicators to enable conclusions to be drawn about the safety of drinking water from a range of different sources in a minimum timeframe. The paper presents the results of chemical and microbiological analysis of water samples from vending machines of various brands and springs located in the city of Ivanovo and the Ivanovo region. The results show the non-compliance of these types of water with established standards for the period of study under consideration. In the course of identifying marker substances based on the data obtained, regression and correlation analyzes were carried out to characterize the chemical composition of water from the proposed sources. Processing of the obtained dependencies of the content of a particular pollutant on time for springs was carried out by polynomials of the 8th and 9th orders, and for vending machines - by polynomials of the 3rd and 4th orders. Trend equations for these dependencies were also obtained. Conclusions are drawn about the possibility of using the statistical processing methods under consideration, the presence or absence of a stochastic relationship between all analyzed components is determined, a list of indicators is presented, between which it is possible to trace the interdependence of content in the types of water under consideration. The list of chemical substances that can be considered as marker indicators for water from water mats and springs is given, as well as the maximum permissible concentrations of the proposed substances. For citation: Tsvetkov A.S., Buymova S.A., Bubnov A.G. Quality markers for water from vending machines and springs. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2024. V. 67. N 12. P. 113-122. DOI: 10.6060/ivkkt.20246712.7059.