CORRELATION ANALYSIS OF METAL DISTRIBUTION IN THE WATER/SEDIMENT SYSTEM OF MODRAC LAKE

The purpose of the correlation analysis between the metal concentration in water and the metal concentration in the sediment is to examine whether there is a connection between these phenomena and to what extent. The coefficient of linear correlation r is used to explain the correlation analysis process. Correlation is made for metal ions of Cu, Zn and Pb. The content of Cu, Zn and Pb in water varied depending on the location and seasons, but did not exceed the Maximum Allowable Concentration. Based on the analysis of metals in water and the analysis of metals in the sediment, the calibration curves for dependence of lnCw and lnCs (Cw metal concentration in water, Cs metal concentration in sediment) were constructed. The inclination of the dependence direction represents the value of the constant 1/n, and the section on the ordinates is the value of the constant K. The Freundlich constant K is about the energy heterogeneity of the surface, is related to the sediment capacity, and the Freundlich exponent n is related to the free adsorption process energy. The analysis showed that the Freundlich exponent n > 1 for Cu and Zn, while the deviation occurred in Pb where n < 1.