Determination of multiple trace elements in coal by inductively coupled plasma mass spectrometry

The inductively coupled plasma mass spectrometry(ICP-MS) could detect 12 kinds of trace elements in under-test solution after the treatment of low-temperature ashing coal sample and mixed acid digestion processing coal ash.The experiment proved that: choosing the right working conditions of inductively coupled plasma mass spectrometry could get the result with low detection limit and fine precision,which controlled the relative standard deviation within 1.82%~4.86%;the results of multiple trace elements in coal,soil,rock standard sample agreed with the recommend value;in the recovery experiments of coal samples,the recovery rate ranged from 80% to 120%;the advantages of ICP-MS were simple,rapid,reproducible and accurate.