The contents of Cu, Zn, Fe, and Mn in Slovenian freshwater fish
2005
Bajc, Z., Ljubljana Univ. (Slovenia). Veterinary Fac. | Sinigoj-Gacnik, K. | Jencic, V. | Doganoc, D. Z.
From 1999 to 2003, 141 samples of freshwater fish from various Slovenian rivers and brooks were analysed for their content of Cu, Zn, Fe and Mn. The concentrations of elements were determined in the muscle/skin (in natural proportion), head, liver and kidney. Brown trout (Salmo trutta m. fario), marble trout (Salmo marmoratus), brook trout (Salevelinus fontinalis), rainbow trout (Oncorhynchus mykiss), grayling (Thymallus thymallus), chub (Leuciscus c. cephalus), nase (Chondrostoma nasus), Danube roach (Rutilus pigus virgo) and barbel (Barbus barbus) were examined. Flame atomic absorption spectrometry was used. The distribution of trace elements in various tissues was studied. It was found that the distribution is specific for each element and also varied by fish species. The contents of elements were the lowest in fish muscle for all species. The target tissues for the elements examined are the metabolically active ones, such as the liver and kidney.
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