Mercury and selenium concentrations in muscle tissue of different species of predatory freshwater fish and correlation between these elements.
Concentrations of total mercury and selenium were determined in 49 and 42 muscle tissue samples, respectively, of six species of predatory freshwater fish, dace (Leuciscus leuciscus), pike perch (Sander lucioperca), pike (Esox lucius), European catfish (Silurus glanis), rainbow trout (Oncorhynchus mykiss) and asp (Aspius aspius). Muscle selenium concentration did not correlate with the corresponding total mercury concentration (R² < 0.198) in all examined predatory fish species. There was an inverse correlation between the ratio Se/Hg content and the total mercury content in the muscle tissues of dace, pike perch, pike, European catfish and asp. The muscle tissue of rainbow trout exhibits a linear correlation between the ratio Se/Hg content and the total mercury content. The total mercury concentration of all examined samples did not exceed the hygienic limit for Hg for predatory fish.
a Department of Chemistry, Biochemistry and Biophysics , University of Veterinary Medicine and Pharmacy in Košice , Komenského 73 , 041 81 Košice , Slovakia.
Imrich
I
Strapáč
Jozef
J
Sokol
Daniel
D
Žatko
Mária
M
Baranová
D000818:Animals; D002397:Catfishes / Q000254:growth & development / Q000378:metabolism; D003530:Cyprinidae / Q000254:growth & development / Q000378:metabolism; D017859:Esocidae / Q000254:growth & development / Q000378:metabolism; D005399:Fishes / Q000254:growth & development / Q000378:metabolism*; D020387:Food Chain; D005506:Food Contamination; D005618:Fresh Water; D057230:Limit of Detection; D008628:Mercury / Q000032:analysis* / Q000378:metabolism; D018482:Muscle, Skeletal / Q000737:chemistry* / Q000378:metabolism; D017686:Oncorhynchus mykiss / Q000254:growth & development / Q000378:metabolism; D010471:Perches / Q000254:growth & development / Q000378:metabolism; D017747:Seafood / Q000032:analysis*; D012643:Selenium / Q000032:analysis* / Q000378:metabolism; D018154:Slovakia; D013054:Spectrophotometry, Atomic; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
D014874:Water Pollutants, Chemical; D008628:Mercury; D012643:Selenium
AAS; freshwater predatory fish muscle; mercury; selenium