Evaluation of Multielement Capability of ICP-MS

摘要: Results obtained from an EPA multilaboratory study of the inductively coupled plasma mass spectrometry (ICP-MS) method are compared with results for graphite furnace atomic absorption (GFAAS) elements As, Pb, Se, and Tl, emission (ICP-AES) Al, Sb, Ba, Be, Cd, Ca, Cr, Co, Cu, Fe, Mg, Mn, Ni, K, Ag, Na, V, Zn. A representative matrix set 6 waters, 10 soils, a predigested group 18 samples was used. complete two-way analysis variance carried out. The statistical indicates that analytical concentrations averaged over all ICP-MS laboratories agree those reference methods number in each set. There is highly significant variation among laboratories, but replicate determinations within satisfactory. show poor agreement values low analyte concentrations. Detection capabilities greater most elements, proportion outliers comparable. Moreover, separate comparing two types instruments disagreement some elements.