Assessment of Metal(loid) Accumulation in the Surficial Sediment of Meyil Lake

Abstract

This study detected eight heavy metal (Cu, Pb, Zn, Ni, Mn, Fe, Cr, Al) and one metalloid (As) amounts in the sediment of Meyil Lake. The findings obtained were compared with the limit values of sediment quality guidelines (SQGs) such as PEL (probable effect level), TEL (threshold effect level), ERL (effects range low) and ERM (effects range median). In addition its probable toxic effects were investigated via different sediment evaluation methods. As a result, the value of the metal concentrations tested was below the limit value. The contamination factor of all the metal(loid)s tested was found to be below 1 (C_f^i<1). Also the mean ERM quotient (m-ERM-q) and mean PEL quotient (m-PEL-q) values revealed that there was no risk for the lake. The total toxic unit (Σ TU) method revealing the toxic effect of the metal(loid)s, also supported this result. The accumulation relations of metals (loids) are also revealed by correlation analysis.

Keywords

• Sinkhole
• karst lake
• sediment quality guidelines
• heavy metal

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