Abstract
The concentration of 35 elements (Al, As, B, Ba, Be, Ca, Cd, Co, Cl, Cr, Cu, Fe, K, Mg, Mn, Mo, N, Na, Ni, P, Pb, Rb, S, Sb, Sc, Si, Sr, Tb, Th, Ti, U, V, Yb, Zn and Zr) in six different imported, NPK, NP and K fertilizers were determined by ICP-OES in two different laboratories and by INAA. The fertilizers were labeled as 24/12 (Belgium), 46/18 (Morocco), 50% ammonium sulfate 50% K2O (Belgium), New 24/12 (Belgium), 16.8.24 (France) and 17.17.17 (France). It is clear that these fertilizers vary widely in their heavy metals and uranium content, and the accumulation of certain elements in vitally important media such as water, soil and food is undesirable from the medical point of view. The results obtained were acceptable and intercomparison between various methods was carried out.
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