Interferences determination on determining Cu, Zn, Cd and Pb in biological materials by atomic absorption spectrometry
2007
Vukašinović, M., Veterinary Specialist Institute Kraljevo, Kraljevo (Serbia) | Kaljević, V., Veterinary Specialist Institute Kraljevo, Kraljevo (Serbia) | Matović, K., Veterinary Specialist Institute Kraljevo, Kraljevo (Serbia) | Nikolić, S., Faculty of Chemistry, Belgrade (Serbia) | Živkov-Baloš, M., Scientific Veterinary Institute Novi Sad, Novi Sad (Serbia)
The quantity of Cu, Zn, Cd, and Pb was determined in biological material (water, complete feeds, muscular tissue, liver and kidneys of fattened bullocks) by atomic absorption spectrometry (AAS). As the matric of biological material is complex, other elements present in high concentrations influence the determination of the mentioned elements by AAS method. In order to establish interferences on determining Cu, Zn, Cd and Pb by AAS method, the concentrations of manganese (Mn), iron (Fe), magnesium (Mg), potassium (K), sodium (Na) and calcium (Ca) were determined as they are the most important interferents in the analyzed materials. Individual and group interferences were determined, with and without application of background corrections. The interferences were determined by preparing synthetic solutions in three levels of concentrations of the determined elements and interferents. Interferences were high on determination of Cd and Pb in the highest concentrations of the interferents. The possibility of interferents removal by applying 8- hydroxyquinoline and potassium-sodium tartrate was also examined.
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