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Assessment of Chemical Pollution and Water Quality of Rivers in the Southeastern Part of Kaliningrad Oblast
https://doi.org/10.31857/S2587556624040086
EDN: RPLLON
Abstract
The article discusses the results of researches on chemical pollution and water quality of the Angrapa, Pissa, Krasnaya and Russkaya rivers, which belong to the Pregolya River basin and form the basis of the river network of the southeastern part of Kaliningrad oblast. Monitoring of these watercourses was planned and carried out at 16 sites during the 2022–2023 hydrological seasons. Hydrological measurements and sampling for subsequent chemical analysis were carried out on October 15, 2022, January 15, 2023, April 23, 2023, and July 19, 2023. The main pollutants in the rivers were identified: petroleum products, iron, sulfates, ammonium, nitrites, phosphates and non-compliance with MPC standards in terms of BOD, COD and dissolved oxygen. The specific combinatorial index of water pollution and the water pollution index were calculated and presented cartographically. The spatial differentiation of water quality in the studied rivers reflects a natural deterioration from the headwaters to the estuaries due to the increased accumulation of river runoff from agricultural lands, settlements and individual households. During the study period, the following phases of the water regime were observed: autumn low water, winter floods, spring high water, and the absence of summer low water. This factor, together with anthropogenic impacts, has a significant impact on the water quality, which varies from polluted to extremely polluted. It can be said that the ecological state of the studied watercourses and their river basins is unfavorable.
Keywords
dynamics of watercourse pollution,
Angrapa River basin,
hydrochemical analysis,
water quality,
mapping of river pollution,
comparative analysis of pollution,
anthropogenic impacts
Supporting agencies: Mapping and GIS work were carried out in the IGRAS within the framework of the state assignment no. FMWS-2024-0007.
About the Authors
S. I. Zotov
Immanuel Kant Baltic Federal University
Russian Federation
Russian Federation
Kaliningrad
Yu. A. Spirin
Institute of Geography, Russian Academy of Sciences
Russian Federation
Russian Federation
Moscow
V. S. Taran
Immanuel Kant Baltic Federal University
Russian Federation
Russian Federation
Kaliningrad
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Review
For citations:
Zotov S.I., Spirin Yu.A., Taran V.S. Assessment of Chemical Pollution and Water Quality of Rivers in the Southeastern Part of Kaliningrad Oblast. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2024;88(4):554-567. (In Russ.) https://doi.org/10.31857/S2587556624040086. EDN: RPLLON
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