Contamination rate of fish muscle by heavy metals from the upper Nitra river
2009
Andreji, J., Slovenská poľnohospodárska univ. v Nitre (Slovak Republic) | Stráňai, I. | Naď, P. | Skalická, M.
This study presents a rate of heavy metals accumulation in the muscle of five common cyprinid fish species – barbel (Barbus barbus), gudgeon (Gobio gobio), European chub (Leuciscus cephalus), roach (Rutilus rutilus), and nase (Chondrostoma nasus) from the upper Nitra River near the Opatovce nad Nitrou village. The samples were collected in September 2005, analyzed by AAS and evaluated in mg per kg of fresh matter. Concentrations of heavy metals in the muscle were as follows: Cu 15.39–25.97, Ni 0.00–3.72, Pb 0.00–1.81, and Cd 0.00–0.11. Statistically significant differences in relationship between heavy metals concentration and standard length (Sl) and weight (w) were confirmed only in Cu and Cd. Exceeding limit of contaminants was recorded for Cu (100%), Ni (12%), Pb (6%) and Cd (10 %). In average, the order of metal concentrations in the fish muscle was: Cu more than Ni more than Pb.
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