کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1240702 | 1495735 | 2009 | 7 صفحه PDF | دانلود رایگان |
In this study, we employ a sectional power-law (SPL) correction that provides accurate and precise measurements of 176Lu/175Lu ratios in geological samples using multiple collector-inductively coupled plasma-mass spectrometry (MC-ICP-MS). Three independent power laws were adopted based on the 176Lu/176Yb 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.
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 64, Issues 11–12, November–December 2009, Pages 1228–1234