Assessment of the Quality Characteristics of Two Lakes (Koronia and Volvi) of N. Greece |
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| Authors: | N Gantidis M Pervolarakis K Fytianos |
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| Institution: | (1) National Agricultural research Fundation (N.AG.RE.F.), 57001, Thermi, Thessaloniki, Greece;(2) Environmental Pollution Control Laboratory, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece |
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| Abstract: | Quality parameters from 17 sampling stations from Lake Koronia and 18 from Lake Volvi were determined during sampling period
of one year. Physicochemical parameters (pH, conductivity, DO) did not show remarkable differences neither between sampling
sites nor between sampling periods. Nutrient concentrations (nitrogen and phosphorus compounds) were higher in lake Koronia
than in Volvi showing relatively small temporal and spatial variations. As far as heavy metals in sediments, lake Koronia
is considerably more polluted than Volvi lake especially with the metals Fe, Mn, Zn, Pb and Cd. The mean total concentrations
of metals in lake Koronia decrease in the order Mn > Zn > Cr > Pb > Cu > Fe > Cd. The mean total concentrations of metals
in lake Volvi decrease in the order Mn > Zn > Cr > Cu > Pb > Fe $>$ Cd. |
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| Keywords: | Lake sediments Water Heavy metals Nutrients Physicochemical parameters |
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