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In this paper, the characteristics of some trace elements and rare earth elements (REEs) in oil shales were examined by inductively coupled plasma mass spectrometry (ICP-MS). It was noted that the content of most trace elements under study ranged from 1 to 50 µg/g. Trace elements with a content < 1 µg/g and > 50 µg/g were also determined. Elements whose abundance in the Earth's crust is high have a high content in oil shale as well. Rare earth elements in oil shale are closely connected withdoi:10.3176/oil.2014.3.06 fatcat:37yny6s3s5fvxd7nzxjuy7zuxu