Dissolved Organic Matter in the River Waters of Moscow’s Water Supply Sources: The Effect of Reservoirs

Sokolov, D.I.; Erina, O.

Авторы: Sokolov D.I., Erina O.
Сборник: Dissolved Organic Matter (DOM): Properties, Applications and Behavior. Pokrovsky O.S., Shirokova L.S. (Editors)
Глава в коллективной монографии
Год издания: 2017
Место издания: Nova Science Publishers, Inc., United States New York
Первая страница: 81
Последняя страница: 114
Аннотация: This chapter describes the main features that characterize the annual variations in the content of dissolved organic matter (DOM) for three reservoirs of different types: the Ivankovo Reservoir and the Ucha Reservoir on the Volga River and the Mozhaysk reservoir on the Moskva River. These three reservoirs belong to the water supply system of Moscow. Based on extensive empirical data obtained over years of hydrological and hydrochemical surveys, we quantified the effect of the reservoirs on the content of DOM in river waters using a unified balance calculation procedure. We found that the content of allochthonous organic matter in the reservoirs decreases under the influence of autochthonous processes. The decrease is most pronounced for the true color of water (its value drops by no less than 40%) and least pronounced for the chemical oxygen demand determined by the dichromate method. The retention of DOM in reservoirs is inversely proportional to their water exchange intensity. The relations between the decrease in the content of DOM and the flushing rate of the reservoirs are characterized by significant correlation coefficients. Moreover, these relations agree well with the available data of studies on other water bodies. In the tailwater below the dam, the fraction of humic substances in DOM is lower and the variation in the content of DOM is several times less pronounced than in the tributaries of the reservoirs. The reduction of these parameters is also inversely proportional to the water exchange intensities of the reservoirs.
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Dissolved Organic Matter in the River Waters of Moscow’s Water Supply Sources: The Effect of Reservoirsстатья

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