Determination and Comparison of Macro, Trace and Toxic Element Content of Some Roughages by ICP OES Technique

It is critical to determine the amount of mineral and toxic elements in roughages, which play an important role in animal nutrition. In this study, macro (Ca, K, Na, Mg, P), trace (Fe, Mn, Zn, Cu, Ni, Co, Cr, Sn, V, Si, Se, Sr, Sb, B), and toxic element (Al, As, Be, Cd, Pb) analysis of 14 roughages were determined by the Inductively Coupled Plasma Optik Emission Spectrometry (ICP OES) method. CRM (NCS DC 73350, poplar leaves) confirmed the accuracy of the method. The samples were solubilized according to the microwave wet digestion method. The macro, trace and toxic element contents of 14 roughages were compared and evaluated according to the results of the analyses. Furthermore, the hierarchical clustering analysis (HCA) displayed the groups as dendrograms. Toxic elements like As, Be, Cd, Co, and Sb were not found in any of the samples. The only one that was found was Pb, which was 0.181±0.12, 0.45+0.07, and 0.40+0.13 mg kg-1 in grain corn leaf, sorghum leaf, and lentil straw, in that order. On the other hand, Sn was found as 0.01+0.005 mg kg-1 only in fodder pea stalk and Si was identified as 1015+140 mg kg-1 only in chickpea straw. In the study, it can be suggested that different roughages contain macro and trace elements at varying rates, and these roughages can be included in the rations according to these element ratios.