Determination of Rare Earth Elements by ICP-MS in some Geological Samples in (Sulaimani) Kurdistan Region of Iraq.

Abstract

Rare Earth Elements(REEs) were evaluated in three locations in sulaimani, Kurdistan region , five types of rock were selected (alkaline, peralkaline, mafic ,iron ore and intermediate rocks).Decomposition of the rock samples carried out by Lithium MetaBorate fusion ,the final sample solutions were prepared in 4% HNO 3 .ICP-MS technique was selected for analysis of Rare Earth Elements in the rock sample ,results show presence of economic level of some Rare Earth Elements in Qaladza location (Bulfat mountain group),the high grade of Rare Earth Elements deposited in Nepheline synite.The best accuracy and precision were obtained by ICP-MS technique, the D.L for most Rare Earth Elements are between (0.01-0.3 ppm),with (0.999)of correlation coefficient , the solutions of the blank, standard solutions are monitored throughout the analysis and the analysis of duplicate also performed to obtain a good accuracy from our analysis.