Analysis of the Spatial and Temporal Variability of Hydrochemical Components of the Rivers of the Lena Basin

Abstract

Purpose. The spatial-temporal variability of the hydrochemical components of the rivers of the Lena basin is analyzed. Materials and methods. The results of the analysis of the spatial and temporal variability of the content of the most informative hydrochemical components for two periods (2010-2015 and 2016-2019) in the Lena River basin in accordance with the existing most stringent standards for fisheries use reservoirs are presented. Result. Maps of the time dynamics for the main hydrochemical indicators (water mineralization, sulfates, chlorides; petroleum products) are constructed.; phenols, iron and copper compounds). Conclusions. It was revealed that copper, iron, organic substances and phenols most often exceed the maximum permissible concentrations for fishery purposes, less often - petroleum products.