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ANALYSIS OF HEAVY METALS IN THE BOTTOM SEDIMENTS OF THE MOSKVA RIVER IN THE LOWER REACHES
Abstract
The purpose of this work is to assess the ecological state of the Moskva River on the content of heavy metals in bottom sediments by the method of L. Hokanson. The method of determining the coefficient of bottom accumulation (CBA) was also used. The content of metals was determined by the X-ray fluorescent method according to the approved procedure. The analysis of the obtained data made it possible to draw a number of conclusions. First, the average level of some heavy metals (zinc, nickel, copper, manganese) was established in the bottom sediments of the Moskva River in the lower reaches. Second, comparison of the obtained data with background indices allowed to characterize the pollution degree of these bottom sediments as significant. Increased content of heavy metals in bottom sediments may be caused by anthropogenic load of the territory located outside the city of Moscow in the south-east. Third, the conducted studies showed that in comparison with river waters pollution levels in bottom sediments are higher.
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