Anthropogenic impact on behavior of nutrients and potentially toxic elements in the Moskva River water Lomonosov Moscow State University, Faculty of Geography, Moscow, Russian Federation Galina Shinkareva, Oxana Erina, Maria Tereshina, Dmitriy Sokolov, and Mikhail Lychagin
[email protected] PTEs dissolved Mo, mkg/L 1000 Kc August 2019 March 2020 100 10 1 0.1 W Cs Ni Cd Rb Al Sr Fe Cu Sb B Li Mo As V Co Be Ti Y Cr Pb Nb U Ba Mn Zn Bi Th • At average background PTEs concentrations in Moskva River have been lower than world average (Gaillardet et al., 2003, doi:10.1016/B0-08-043751-6/05165-3). The exceptions have been found for B, Zn, Nb Sb (Kc) (1,5 – 20-fold excess over world average). • Only basin average W, Cs, Ni, Cd, Rb, and Al concentrations exceeded the Moskva background values (4–42- fold). • The most polluted river part have been revealed – from Kuryanovsk aeration station to the Moskva River confluence with Oka River. During low water period high concentrations of Cs, Sb, Mo, Ni have been common there, and during high water in spring high concentrations of Cs, Mo, Co, Ni have been detected. • Downstream of Lytkarino aeration station high concentrations of Sr have been measured. Nutruents August source mouth • As a result of the urban wastewater influx downstream Moscow city, the total mineralization of water increased, the content of the main ions changed to the predominance of sulfates and chlorides, the content of nitrogen and phosphorus increased sharply (mainly due to dissolved mineral forms).