MAJOR, MINOR AND RARE-EARTH ELEMENT DETERMINATIONS IN 25 ROCK STANDARDS BY ICP ATOMIC-EMISSION SPECTROMETRY

Analytical data for 31 elements in 8 Japanese, 12 South African and 5 Belgian Reference Materials of igneous and (meta-) sedimentary origin are reported. These data have been obtained by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES). For most samples, relative standard deviations are in the range 0.5-3% for major elements, 2-10% for minor elements, and equal to or better than 5% for the REE. Accuracies, as estimated from a comparison with recommended values, are about 10% or better.