In situ Nd isotopic measurement of natural geological materials by LA-MC-ICPMS
会议名称：《中国科学院地质与地球物理研究所2008学术年会》
会议日期：2009年
学科分类：070902[理学-地球化学] 0709[理学-地质学] 07[理学]
基 金：Supported by the National Natural Science Foundation of Chma(Grant Nos. 40773008 and 40325006)
关 键 词：Nd isotope apatite titanite monazite perovskite LA-MC-ICPMS
摘 要：Using newly determined Sm isotopic abundances for correcting the isobaric interference of Sm on Nd and the established mass bias relationship between Sm and Nd,a series of in situ Nd isotopic measurements were conducted for relatively high Nd concentrations of natural geological materials, including apatite,titanite,monazite and perovskite on a Neptune multi-collector inductively coupled plasma mass spectrometry(MC-ICPMS),coupled to a 193 nm ArF excimer laser ablation *** results show that Ce has no significant influence on the precision and accuracy of Nd isotopic analyses for LREE-enriched geological minerals and that our approach is efficient in obtaining reliable Nd/Nd and Sm/Nd ratios for those materials with Sm/Nd1(Sm/Nd0.6).When combined with trace element and U-Pb isotope data,the in situ Nd isotopic data can provide important information on geological processes.