In-situ determination of trace elements in clinopyroxene from mantle rocks by LA-ICP-MS: Comparison of different external standards

Trace elements in clinopyroxenes, separated from mantle rocks in the Asan and Pyeongtaek area of Korea, were successfully determined using different standards, NIST 612 and USGS GSE, by LA-ICP-MS. Data qualities of the LA-ICP-MS analysis with both standards are reasonable, with no significant difference in expected values determined by conventional ICP-MS. However, USGS GSE, which has similar element compositional patterns compared to clinopyroxenes, is a more useful external standard to determine relatively low mass element compositions in clinopyroxenes, such as of Li, V, and Sr, than NIST 612 standard.