ACCUMULATION OF MACRO- AND MICROELEMENTS BY DUCKWEED (LEMNA MINOR) IN CONDITIONS OF LOW AND SIGNIFICANT ANTHROPOGENIC LOADING
Published: 12 Sep 2020
Abstract: Wide utilization of duckweed in phytoremediation of industrial and municipal wastewater supposes its significant role in maintaining ecological balance in polluted water bodies. Using ICP-MS method, peculiarities of macro- and microelements accumulation by Lemna minor L. in abundant flooded quarry near phosphorgypsum (PG) storage site and in unpolluted lake of Yoshkar-Ola was investigated. Duckweed biological accumulator factor (BAF) of macro-elements in conditions of elevated pollution was significantly lower than in unpolluted area. The same phenomenon was revealed for As, Sr, Cu and Ni contrary to Cr, Pb, V, Cd and Al with higher BAF values in conditions of increased pollution. The highest value of BAF (more than a million) was shown for Mn in unpolluted. During summer concentrations of P, Zn, Co, Cr. Cd, Ni, Al, Mn, Si, Cu and As in water flooded quarry decreased 13.25, 8, 4.2, 2.27, 2.0, 1.75, 1.75, 1.6, 1.44 and 1.41 times accordingly. Concentration of all microelements and heavy metals except Sr, Mn, Se and B also decreased. The period of intensive duckweed growth (summer) was accompanied by significant changes in BAF values: increase of macro-elements BAF; for Cr, Al, Pb, and V- intensive decrease of BAF values and among microelements intensive BAF increase only for Zn and Mn.
Keywords: lemna minor, phytoremediation, multifactorial pollution
Cite this article: Helen Kekina, Nadezhda Golubkina, Ulyana Plotnikova, Fedor Golubev, Pavel Scherbakov. ACCUMULATION OF MACRO- AND MICROELEMENTS BY DUCKWEED (LEMNA MINOR) IN CONDITIONS OF LOW AND SIGNIFICANT ANTHROPOGENIC LOADING. Journal of International Scientific Publications: Ecology & Safety 14, 45-54 (2020). https://www.scientific-publications.net/en/article/1002035/
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