期刊
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
卷 64, 期 11-12, 页码 1228-1234出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.sab.2009.09.006
关键词
Lutetium; Sectional power law; Isotope dilution; Multiple collector ICP-MS
类别
资金
- National Nature Science Foundation of China [40672029, 40973011, 40821061, 40673019]
- Ministry of Education of China [306021, B07039]
- National Basic Research Program of China [2003CA214600]
- Program for New Century Excellent Talents in University [NCET-07-0687]
- Fok Ying Tong Education Foundation [111018]
- State Key Laboratory of Continental Dynamics
In this study, we employ a sectional power-law (SPL) correction that provides accurate and precise measurements of Lu-176/Lu-175 ratios in geological samples using multiple collector-inductively coupled plasma-mass spectrometry (MC-ICP-MS). Three independent power laws were adopted based on the Lu-176/Yb-176 ratios of samples measured after chemical chromatography. Using isotope dilution (ID) techniques and the SPL correction method, the measured lutetium contents of United States Geological Survey rock standards (BHVO-1, BHVO-2, BCR-2, AGV-1, and G-2) agree well with the recommended values. Results obtained by conventional ICP-MS and INAA are generally higher than those obtained by ID-TIMS and ID-MC-ICP-MS; this discrepancy probably reflects oxide interference and inaccurate corrections. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
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