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DETERMINATION OF HEAVY METALS IN WATER OF LAKE OHRID AND IN FISH SPECIES – Leuciscus cephallus albus. JURIDICAL MASS FOR PROTECTION OF WATERS FROM POLLUTANTS
Abstract
Metals occur in different forms : as ions dissolved in water, as vapours, or as salts or minerals in rock, sand and soil. They can also be bound in organic or inorganic molecules, or attached to particles in the air. Both natural anthropogenic processes and sources emit metals into air and water. The effects of metals in the environment depend to a large extent on whether they occur in forms that can be taken up by plants or animals. Uptake of metals in an animal involves metal ions crossing a cell membrane. The aim of this paper was analysis and determination of heavy metals like Cu, Zn, Cd and Pb in water samples of different prophiles from Ohrid Lake. Studied water samples were taken in different locations and different depths (0m, 20m, 40m, 75m, 100m and 150m). The presence of toxic heavy metals in food chain was studied in fish species – Klein (Leuciscus Cephallus albus Bp Bonaparte). Determination of analysed heavy metals was done using Atomic Absorphion spectroscophy using a Perkin Elmer 370 A and 370 flame – aer acetylene and AAS Peyunicam 926 model.
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References31
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37. DISTRIBUTION OF YEASTS AND FILA AND NON POLLUTED STREAMS OF Marisa Lopes1 Assis. Prof. Ana Sampaio2 Assis. Prof. Maria do Rosário Costa3 Full Prof. Rui M. Cortes2
1 Msc student in University of Trás-os-Montes
2 Centre for the Research and Technology Sciences (CITAB), Portugal
- Department of Geology, Vila Real, P
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