THE CONTENT OF HEAVY METALS IN THE COW BLOOD OF THE NORTHERN- EASTERN BIOGEOCHEMICAL ZONE AT DIFFERENT TECHNOLOGIES OF KEEPING

In the article the results of research of Cd, Pb, Al, As content in the blood of cow from the farms of Chernihiv region (northern-eastern biogeochemical zone) at different technologies of keeping are presented. The content of heavy metals was investigated by atomic emission spectrometry using Optima 210 DV. In the blood of cows of the northern-eastern biogeochemical zone at stable pasture system of keeping was observed that the Cadmium content is 0.03±0.03 mg/l, the content of Plumbum is 0.08±0.05 mg/l, the content of Aluminium is 2.02±1.39 mg/l. The content of Arsene is 0.47±0.43 mg/l that exceeds MPC in 9.4 times. In the blood of cows of the northern-eastern biogeochemical zone at loose keeping system was observed that the concentration of Aluminum is 0.47±0.17 mg/l; of Cadmium is 0.005±0.002 mg/l that is lower in 10 times at the MPC; the content of Plumbum is 0.05±0.02 mg/l in twice lower at the MPC; the content of Arsene is 0.16±0.22 mg/l that exceeds it in 3.2 times. In the blood of cows of the northern-eastern biogeochemical zone at stable system of keeping the Aluminum content is 0.63±0.37 mg/l; the Cadmium content is 0.001±0.001 mg/l that is lower at the MPC in 10 times; the content of Arsene is 0.48±0.14 mg/l that exceeds in 9.6 times at the MPC; and the content of Plumbum is 1.76±1.81 mg/l that exceeds in 17 times at the MPC