THE RESIDUAL AMOUNT OF LITHIUM IN THE MEAT OF BROILER CHICKENS UNDER PHARMACOLOGICAL PREVENTION OF STRESSES

The article presents the assessment of residual amounts of lithium in meat of broiler chickens after the application of the pharmacological complex of SPAO in the prevention of pre-slaughter stresses. The concentration of lithium in biological objects was determined by the method of atomic absorption spectroscopy (AAS). Sample preparation for AAS-determination of metals was carried out by the method of dry mineralization. A sample of 100 grams of forcemeat was burned in a muffle furnace with stepwise heating (at 50 °C every 0,5 hours) to temperature of 500 °C. The ash was wetted with a solution of HNO3 at a dilution of 1:1 and dried. The dry residue was diluted with 1N HCl solution, filtered through the «blue tape” filter and the volume of acidic extract was adjusted to 25 ml. The detected concentrations of lithium in meat are safe and meet the standards for the intake of this essential element to men with food.