Distribution of oil products in bottom sediments of the Irtysh River in the urban area

Abstract

It was shown that urbanized territories contribute to the pollution of bottom sediments of a watercourse by the example of a large river. It was established that the places of localization of the infrastructure of oil refineries, even after their transfer, continue to pollute the environment with oil products, with a periodic excess of the maximum permissible concentration of 20 mg·kg-1. The dynamics of the distribution of oil products in the bottom sediments of a watercourse depends on the meandering of the river, the presence of zones of active operation of the fleet and time of year. The smallest concentrations of oil products was observed at the site located upstream from the studied urbanized area adjacent to the city.

Water Elemental Composition and Toxicity in Kazakhstan’s Transboundary Rivers

“…: Sb) entering these rivers, although the relevance of such studies is obvious. Simultaneously, the monitoring results show that the Yertys (IR) River (Chemagin, 2020) is also exposed to As, Ba, Cr, Zn, Fe, and Ca pollution inside Kazakhstan, evidenced by the values between two control points -IR (at the river's entry into country) and PR (at its exit to Russia).…”