ICP-MSA four pole mass spectrometry device of high sensitivity, the Inductively Coupled Plasma-MS is particularly advantageous for trace determinations of metals like Pb, Cd, Hg, As, etc. and surveying for unknown or unexpected elements. The detection capability of 0.1 ppm at 1% wt. is superior to the often compared ICP-AES of the same sample type. Comparatively, the ICP-MS also has the ability to obtain information about isotopes, which are common for many elements and missed by traditional mass spectrometry.