Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 1
Written by Petya ZAHARIEVA, Diana KIRIN
This study presents the result of investigations of heavy metals (Cu, Cd) and metalloids (As) in the liver, skin and muscles of Chondrostoma nasus (Linnaeus, 1758), as well as in waters and sediments of the Danube River (Kudelin village, Vidin region), Bulgaria. The highest levels of Cu (23.05 ± 16.14 mg.kg-1), Cd (0.08 ± 0.04 mg.kg-1) and As (9.24 ± 4.79 mg.kg-1) was found in samples of liver. The content of the studied elements decreased in the following order: liver>skin>muscle. The highest values for As content (0.07 ± 0.05 mg.l-1) were found in surface waters, while the highest values for Cu content (204.09 ± 121.05 mg.kg-1) were found in sediments. The circulation of the studied elements in the freshwater ecosystem was investigated. The excesses in the values of the obtained results were analyzed against regulated national and international standards.
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