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​ARSENIC CONTAMINATION OF GROUNDWATER ON THE RIGHT BANK OF OB RIVER​

N. I. Yandolа 1, D. А. Novikov 1,2, А. S. Derkachev 1, F. F. Dultsev 1, А. А. Khvashchevskaya 3

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

For the first time, the data on the spatial distribution of arsenic and its levels in groundwater on the right bank of Ob River (within the Novosibirsk Region) are presented and the population health risks associated with using these drinking water sources are assessed. Excess over the maximum permissible arsenic concentration was identified in 17.5% of the analyzed samples (in some, up to 27 times). Given the fact that than 25% of the samples collected within the Sovietsky District (Novosibirsk), and Novosibirsky, Cherepanovsky, Iskitimsky, Maslyaninsky and Toguchinsky Districts of the Novosibirsk Region are characterized by high and extremely values of individual carcinogenic risk (CR) coefficient for arsenic, these drinking-water sources should be deemed as unsafe.

Keywords: hydrogeochemistry, arsenic, carcinogenic risk, hazard coefficient, oncological diseases, Novosibirsk Region, Western Siberia.

DOI 10.20403/2078-0575-2025-3-77-87

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