Anthropogenic factors affecting the Moskva River water quality: levels and sources of nutrients and potentially toxic elements in Moscow metropolitan area

被引:4
作者
Shinkareva, Galina [1 ]
Erina, Oxana [1 ]
Tereshina, Maria [1 ]
Sokolov, Dmitriy [1 ]
Lychagin, Mikhail [1 ]
Kasimov, Nikolay [1 ]
机构
[1] Lomonosov Moscow State Univ, Fac Geog, Leninskie Gory 1, Moscow 119991, Russia
基金
俄罗斯科学基金会;
关键词
Water quality; Potentially toxic elements; Nutrients; Levels of contaminants; Urban water system; HEAVY-METAL CONTAMINATION; RISK-ASSESSMENT; DRINKING-WATER; ROAD RUNOFF; ARSENIC CONTAMINATION; GEOCHEMICAL BARRIERS; DISSOLVED METALS; ORGANIC-MATTER; TRACE-ELEMENTS; SEDIMENTS;
D O I
10.1007/s10653-022-01393-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This study aims to identify the main patterns of distribution and sources of pollutants in the Moskva River and their influence on river water quality under different levels of anthropogenic stress caused by the largest megacity in Europe - Moscow. For this study, we determined concentrations of 18 trace elements, nutrient elements and major ions, chemical and biochemical oxygen demand, and physical parameters of water at 45 stations on the Moskva River and 20 stations on its tributaries during spring flood and low water of 2019 and 2020 to identify the extent and mechanisms of urban impact on its water chemistry. Chemical elements concentrations have been determined using ICP-MS and ICP-AES methods. Mn, Al, Cu, Sr, Zn, B, Mo, and inorganic nitrogen were outlined as key pollutants according to various drinking water and environmental guidelines. Using correlation and factor analysis, five groups of elements were identified, corresponding to different drivers controlling their unequal distribution within the watershed: mineral sources (Sr, Li, B, Mo, Ca), sewage and road runoff (TN, TP, Sb, Ni, N-NO2, BOD5, COD, V, Zn), impact of acidic wetlands (Al, COD, Zr, Bi), groundwater and landfills leachate (V, As, Pb, U, Sb), and industrial activities (Zn, Cu). Water quality in the Moskva Basin on the whole is good according to the CCME Water Quality Index. Local deterioration of water quality to marginal and even fair (depending on the reference water quality guideline) is confined to the Moskva River part downstream from the Kuryanovo aeration station to the Moskva mouth and to the mouths of several heavily contaminated tributaries.
引用
收藏
页码:3113 / 3141
页数:29
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