[Studies of certain trace elements in selected internal organs and meat of bulls].

The aim of the study was to determined lead, cadmium, copper, zinc, and iron contents in certain internal organs and meat of young bulls. The material comprised kidney, liver and muscle tissues of 60 bulls from an agricultural region (control group). Contents of lead, cadmium, iron, copper and zinc were determined by atomic absorption spectrometry. It was found that the levels of lead and cadmium in kidney and liver of the bulls from Kraków voivodship, as compared with the agricultural region, were several times higher.