Transboundary aspects of river water pollution and water quality estimation of the Middle Ob river

Abstract

The Middle Ob is the part of the Ob river reach running through the central part of Western Siberia within Khanty-Mansi Autonomous Okrug, and brings its waters through the territory of Yamalo-Nenets Autonomous Okrug to the Gulf of Ob of the Arctic Ocean. The data on hydrochemical characteristics of the Middle Ob river and its anabranches during 2003-2008 and 2014-2018 in aspects of transboundary transfer is presented in the article. Composition of salt, organic compounds, heavy metals, petroleum hydrocarbons, biogenic ions in water and bottom sediments are described. The influence of oilfields and urban territories in water catchment area of the Middle Priobie is revealed. The main pollutants of the Middle Ob river are phenols, hydrocarbons, iron, manganese, chrome, cooper, phosphate-ions from technogenic and natural originating. We investigated that the level of the Middle Ob river water pollution was increased from 2003-2008 till 2014-2018.

Estimation of the capacity for self‐purification of transformed rivers of Khanty‐Mansi Autonomous Okrug‐Yugra (Russia)

“…The Ob River brings its waters further down through the territory of Yamalo‐Nenets Autonomous Okrug to the Gulf of Ob of the Kara Sea. The Ob River pollution is considered to have transboundary aspects for Arctic water bodies (Holmes et al, 2000; Rusak et al, 2019).…”

“…(B) Sampling points characteristics. 2003-2006, Surgut region: 1-Bolshaya Mokhovaya, 2-Malaya Mokhovaya, 3-Pochekuyka, 4-Kalinina,5-Glukhaya, 6-Minchimkina, 7-Bystryi Kul'yegan, 8-Anoshkina, 9-Kemchayakha, 10-Ai-Pim, 11, 12, 13-Pim, 14-Bolshoy Yugan, 15, 16-Sortym'yegan, 17, 18-Ik-Yakh;2018-20192018-2019…”

The experience of application of microbiological indicators in monitoring procedures of aquatic ecosystems in the Middle Ob basin

“…Therefore, the anthropogenic loading on the Middle Ob basin is extremely intensive. It has considerably increased from the middle of the 20th century [11][12].…”