Input of Conservative Impurities into Small Urban Rivers of the South of Western Siberia During the Spring Flood (Barnaulka River as a Case Study)

An analysis was conducted of the spatial distribution of microcomponents of total forms of heavy metals (Fe, Ti, Ba, Al, Mn, Zn) along a 10-km section of the Barnaulka River within the city of Barnaul. Sampling was carried out in April 2025, followed by analysis using inductively coupled plasma mass spectrometry (ICP-MS). Areas with the highest levels of contamination were identified, and the main sources of pollutants were determined. Areas with maximum pollution levels were identified, and the main sources of contaminant inflow were determined. At sites with peak total metal content, the analysis of dissolved forms revealed exceedances of fishery standards (MPC_fish) for Fe and Mn. The impact of wastewater discharges on the total heavy metal content in the Barnaulka River was assessed.