The Effect of the Physicochemical Properties and the Composition of Dubna River Water on the State of the Processes of Lipid Peroxidation in Biological Systems

Abstract

The dynamics of water physicochemical properties and hydrochemical characteristics in the Dubna River was studied from April 18, 2021 to July 4, 2021. The study showed an increase in pH with increasing water temperature and considerable variation in the concentrations of ammonium, nitrite, and phosphate ions in it. Promising approaches were shown to be the use of mathematical processing of UV-spectra of water samples by Gauss method and model biological systems based on natural lipids (low-temperature oxidation of lecithin, and its ability to spontaneously aggregate in a polar environment) for assessing the quality of natural water and its effect on the regulation of oxidation processes in biological objects. Thus, analysis of UV-spectra revealed the presence in water of hydrophobic organic compounds throughout the observation period, compounds with conjugated double bonds and N-containing compounds in late April, free fatty acids, organic compounds with a carbonyl group and P-containing compounds at the end of May and an increase in the diversity of components in water samples in late June. Water samples taken in summer, increased the rate of lecithin oxidation by a factor of more than 1.8, and, throughout the observation period, they caused staged changes in the size of aggregates formed by it and produced a considerable effect on their dzeta-potential.