scientific journal
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  • Russian Press: 44722

RARE EARTH ELEMENTS (REE) IN THE SYSTEM WATER — BOTTOM SEDIMENTS — PLANTS OF THE MOSKVA RIVER. PART 2. THE CONTENT OF REE IN HIGHER AQUATIC VEGETATION OF THE MOSKVA RIVER

Published in «Water: chemistry and ecology» № 12 / 2016 , p. 3–9.
Heading:

 

M.V.Gapeeva
Uvarov A.G.

Summary:
The aim of this work was the defi nition of accumulative capacity of rare earth elements (REE) by frequent species of aquatic plants and by various parts of therm, the calculation of bioaccumulation factors (BAF), translocation factors (TF) of REE in Old-World arrowhead (Sagittaria sagittifolia L.), European cow lily (Nuphar lutea (L.) Smith), Flowering rush (Butomus umbrellatus L.), clasping-leaved pondweed (Potamogeton perfoliatus L.) and Meakin (Myriophyllum spicatum L.) The present study was carried out on the Moskva River in the summer of 2010 and 2012. REE concentrations were determined by the ICP MS DRC-e using internal standard In and external calibration. The results of the study show that the distribution of REE in the water and bottom sediments (BS) of the Moskva River is quite variable both in time and in space, along the way from the source to the mouth. In the context of abnormally hot weather in 2010, the level of free-fl owing forms of REE in BS on shallow areas of the river has increased dramatically. Moreover, it is diffi cult to estimate the origin of REE. According to the analysis of samples taken in the high-water period of 2012 and normalized with respect to Russian clay it was shown that the REE in the Moskva River have both natural and anthropogenic origin. In this paper, reliable relationship between REE and BS in the roots of all the studied plants, collected in 2010 were not found. However, in 2012 the correlation between the plants and BS were signifi cant at p> 0.05. The results of two years of research show that all of the studied plant are accumulators but not hyperaccumulators of REE.

Keywords: bottom sediments, macrophytes, Moskva River, rare earth elements

Bibliographic link:
M.V.Gapeeva, Uvarov A.G. RARE EARTH ELEMENTS (REE) IN THE SYSTEM WATER — BOTTOM SEDIMENTS — PLANTS OF THE MOSKVA RIVER. PART 2. THE CONTENT OF REE IN HIGHER AQUATIC VEGETATION OF THE MOSKVA RIVER // Water: chemistry and ecology. — 2016. — № 12. — c. 3–9. — http://watchemec.ru/en/article/28344/

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