The paper analyzes the basic ions, heavy metals and organic compounds content in the waters of different types of mires of the southern taiga subzone of Western Siberia under natural conditions, under the influence of background transfer of pollutants and at the stage of recovery after a fire event. The water chemistry was determined by titrimetry, spectrophotometry, flame photometry, volt-amperometry, IR and chromatograph mass spectrometry. Data analysis showed a tendency for an increase in the concentration of Ca, Mg, Na, HCO, as well as Fetotal from raised bogs to fens, which is consistent with a change in sources of water and mineral nutrition. The chemical composition of the waters of the burnt-out mire is characterized by an increase in the pH value, as well as concentrations of Ca, Mg, SO and biogenic elements Fe, H, NO, Pb, Cu, Cd, and a low content of organic compounds. The content of heavy metals in the waters of pristine mires indicates their background input from forest fires and vehicle exhaust. Organic compounds in waters of all studied mires are represented by biogenic structures formed as a result of leaching from peat deposits, and in two of them also by anthropogenic inclusions (pollutants of oil genesis). Biomolecules of waters are represented by a wide range of cyclic biologically active steroids, di- and triterpenoids, as well as acyclic fatty acids and their esters, ketones and high-molecular diketones, aldehydes, alcohols, -alkanes and squalene, the proportion of -alkanes in the composition of acyclic structures of waters decreases in the series: raised bogs – transitional mires – fens.
Yu.A. Kharanzhevskaya (Wed,) studied this question.