[Atomic absorption determination of heavy metals in the milk and meat from several regions of Bulgaria].
By AAS after wet digestion of the samples the results were 20% higher (for milk) and 41% higher (for meat) in comparison with dry coshing. Cow and ewe milk and pork, beef, and mutton were sampled in six regions of the country and were studied with regard to residual amounts of four trace elements. Highest appeared to be the content of zinc, and lowest--the content of cadmium. The results were compared with data of workers abroad. On the basis of results of personal investigations and studies of authors abroad a temporary standard norm for the content of cadmium was fixed at 0.15 mg/kg, and for that of lead--at 0.40 mg/kg. A system of technologic and sanitary-and-technical measures are suggested (higher chimneys, catching installations, filters) for the regions of Plovdiv and Kurjali with a view to lowering the concentration of toxic elements and avoiding the pollution of the environment.
D000818:Animals; D002031:Bulgaria; D002417:Cattle; D008460:Meat / Q000032:analysis*; D008670:Metals / Q000032:analysis*; D008892:Milk / Q000032:analysis*; D012756:Sheep; D013054:Spectrophotometry, Atomic / Q000379:methods*; D013552:Swine
D008670:Metals
Atomno-absorbtsionno opredeliane na tezhki metali v mliako i meso ot niakoi raĭoni na stranata.