Content of selected metals in muscle of cyprinid fish species from the Nitra River, Slovakia.
OBJECTIVE
This study presents a rate of bioaccumulation of some metal concentrations in the muscle of five common cyprinid fish species (gudgeon - Gobio gobio, Europen chub - Leuciscus cephalus, barbel - Barbus barbus, roach - Rutilus rutilus, and nase - Chondrostoma nasus).


METHODS
Besides, correlations among selected metals as well as standard length and total weight and order of metal accumulation in the fish muscle were determined.


RESULTS
Recorded metal concentrations (mg/kg wet weight basis) ranged as follows: Fe 4.23-22.95, Mn 0.10-0.72, Zn 16.26-166.90, Cu 15.39-25.97, Ni 0.00-3.72, Pb 0.00-1.81, and Cd 0.00-0.11.


CONCLUSIONS
The Slovak permissible limit for Cu (10.0 mg/kg), Ni (0.5 mg/kg), Pb (0.2 mg/kg) and Cd (0.05 mg/kg) defined in the Codex Alimentarius for safe human consumption exceeded in 100%, 12%, 6% and 10% of analyzed samples for Cu, Ni, Pb and Cd respectively. On an average, the order of metal concentrations in the fish muscle was: Zn>Cu>Fe>Mn>Ni>Pb>Cd.
Department of Poultry Science and Small Animal Husbandry, Slovak University of Agriculture, Nitra, Slovak Republic. Jaroslav.Andreji@uniag.sk
Jaroslav
J
Andreji
Petr
P
Dvorak
Zuzana
Z
Dvorakova Liskova
Peter
P
Massányi
Ivan
I
Stranai
Pavel
P
Nad
Magdalena
M
Skalicka
D000818:Animals; D002104:Cadmium / Q000378:metabolism / Q000633:toxicity; D003300:Copper / Q000378:metabolism / Q000633:toxicity; D003530:Cyprinidae / Q000378:metabolism*; D004784:Environmental Monitoring; D005506:Food Contamination; D006801:Humans; D007501:Iron / Q000378:metabolism / Q000633:toxicity; D007854:Lead / Q000378:metabolism / Q000633:toxicity; D008345:Manganese / Q000378:metabolism / Q000633:toxicity; D008670:Metals / Q000378:metabolism / Q000633:toxicity*; D018482:Muscle, Skeletal / Q000378:metabolism; D009532:Nickel / Q000378:metabolism / Q000633:toxicity; D045483:Rivers / Q000737:chemistry*; D018154:Slovakia; D014874:Water Pollutants, Chemical / Q000378:metabolism / Q000633:toxicity*; D015032:Zinc / Q000378:metabolism / Q000633:toxicity
D008670:Metals; D014874:Water Pollutants, Chemical; D002104:Cadmium; D007854:Lead; D008345:Manganese; D003300:Copper; D009532:Nickel; D007501:Iron; D015032:Zinc