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espanolEficiencia de bioconcentration de Lemna minor L. and Lemna gibba L. para metales traza en tres embalses del sureste de Bulgaria La lenteja de agua se utiliza en el tratamiento de aguas residuales para eliminar sustancias nocivas, minerales y contaminacion organica. El proposito del presente estudio fue investigar la eficiencia de bioconcentracion de metales pesados en Lemna minor y Lemna gibba provenientes de tres embalses del sureste de Bulgaria: el canal de la ciudad de Elhovo, el canal del lago Vaja y el canal del lago Mandra. Se analizaron los contenidos de proteina cruda, lipidos y ceniza en las especies estudiadas de Lemna. Los metales pesados en agua y plantas acuaticas se determinaron con un espectrometro de absorcion atomica (AAS) "A Analyst 800" - Perkin Elmer. Las concentraciones de metales en L. minor y L. gibba mostraron una tendencia descendente: Mn>Fe>Zn>Cu>Ni> Cr>Pb>Cd en las tres masas de agua. EnglishDuckweed is used in wastewater treatment to remove inorganic substances, mineral and organic contamination. The purpose of present study was to investigate a Lemna minor and Lemna gibba bioconcentration efficiency of trace metals in three southeast Bulgarian water reservoirs. Three waterbodies located on the territory of South East Bulgaria: water canal town Elhovo, water canal Vaja Lake and water canal Mandra Lake was studied. Crude protein, lipid, ash content in studied species of Lemna were analyzed. The trace metal content in water and aquatic plants was determined on an atomic absorption spectrometer (AAS) "A Analyst 800" - Perkin Elmer. The concentrations of metals in both L. minor and L. gibba and for all sites showed a downward trend: Mn>Fe> Zn>Cu>Ni>Cr>Pb>Cd.

Bioconcentration efficiency of Lemna minor L. and Lemna gibba L. for trace metals in three southeastern Bulgarian water reservoirs