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DISTRIBUTION OF DISSOLVED ORGANIC MATTER IN GROUNDWATER SOURCES FOR HUMAN CONSUMPTION WITHIN THE EASTERN PART OF THE NOVOSIBIRSK REGION​

D. A. Novikov 1,2, F. F. Dultsev 1, V. V. Chernykh 1, N. I. Yandola 1, A. A. Khvashchevskaya 3

1 Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia; 2 Almetyevsk State Technological University «Higher School of Oil», Almetyevsk, Republic of Tatarstan, Russia; 3 National Research Tomsk Polytechnic University, Tomsk, Russia​

We have analyzed distributions of dissolved organic substances in groundwater sources for drinking and domestic use within the eastern areas of the Novosibirsk Region. The established therein concentrations of total organic carbon (TOC), which is composed of a diverse array of organic compounds occurring both in dissolved and undissolved form in groundwaters, are in the range from 0.06 to 87.6 mg/dm3. The highest concentrations (>50 mg/dm³) were reported from groundwaters which are Devonian-Carboniferous in age. In 57 studied samples, TOC levels were found to be two times (and more) higher than the maximum permissible concentrations. The pattern for permanganate oxidizability (PO) differs drastically, with a smaller portion (41.5%) of the studied samples showing an excess in the maximum allowable concentrations, while solitary samples demonstrated a fivefold (and more) excess. Within the study area, the maximum level of TOC contamination is reported from the city of Novosibirsk, and that of permanganate oxidizability – from Chulymsky District of the Novosibirsk Region.

Keywords: dissolved organic matter, hydrogeochemistry, contamination, drinking groundwater, Novosibirsk Region, Western Siberia.​

DOI 10.20403/2078-0575-2026-1-102-112

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