- abstract:
A method for the determination of major, minor and trace elements in silicate samples by ICP-QMS and ICP-SFMS applying isotope dilution-internal standardisation (ID-IS) and multi-stage internal standardisation has been developed. Samples with an enriched isotope of 149 Sm (spike) were decomposed by a HF/HClO4 mixture and stepwise drying and finally diluted. In ID-IS for trace element analyses by Q-pole type ICP-MS (ICP-QMS), the Sm concentration was determined by ID, while other trace elements (Li, Be, Rb, Sr, Y, In, Cs, Ba, La, Ce, Pr, Nd, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Tl, Pb, Bi, Th and U) were determined using the 149 Sm intensity as an internal standard. Major and minor elements were determined by multi-stage internal standardisation, with Na, Mg, Al, P, Ca, V, Mn, Fe and Co measured by sector magnetic field type ICP-MS (ICP-SFMS) at middle resolution (MR; M/∆M = ~ 3000) using Sr determined by ICP-QMS in the sample as the internal standard. Potassium, Sc, Ni, Cu, Zn and Ga were measured at high resolution (HR; M/∆M ~ 7500) using the Sr concentration obtained by ICP-QMS or the Mn concentration obtained by ICP-SFMS at MR as internal standard. The merit of ID-IS is that accurate dilution of the sample is not required. Matrix effects on elemental ratios down to a dilution factor (DF) of 600 were not observed in either types of mass spectrometry. Pseudo-flow injection (FI), where transient signals were integrated, was used in ICP-QMS, while conventional continuous sample introduction was used in ICP-SFMS, resulting in total required sample solutions of 0.026 ml and 0.08 ml, respectively. Detection limits were low enough to determine these elements in depleted ultramafic rocks, and typical reproducibilities for basalts were 3% (Li-Be), 1% (Rb-U), 5% (In, Tl and Bi), 7% (Sc-Ga) and 3% (major elements). Carbonaceous chondrites including Orgueil (CI1), Murchison (CM2) and Allende (CV3), as well as reference materials, JB-1, -2, -3, JA-1, -2, -3 and JP-1 (GSJ), BHVO-1, AGV-1, PCC-1 and DTS-1 (USGS), were analysed to show the applicability of this method.
- doi: 10.1111/j.1751-908X.2006.tb01066.x
- modified at 16 h ago
@article{20160819190828-080638,
author = "Makishima, Akio and Nakamura, E.",
title = "Determination of Major, Minor and Trace Elements in Silicate Samples by ICP-QMS and ICP-SFMS Applying Isotope Dilution-Internal Standardisation (ID-IS) and Multi-Stage Internal Standardisation",
journal = "Geostandards and Geoanalytical Research",
year = "2006",
number = "3",
volume = "30",
pages = "245--271",
doi = "10.1111/j.1751-908X.2006.tb01066.x",
}| caption | ID | assembly | stone | ||
|---|---|---|---|---|---|
| Table 7.Analytical results for basalt reference materials in this study pub | 20191018152853-393636 | major-trace (Max et al., 2006) | 4 | ||
| Table 8.Analytical results for andesite reference materials in this study pub | 20191018151800-370260 | major-trace (Max et al., 2006) | 4 | ||
| Table 9.Analytical results for peridotite reference materials in this study pub | 20191018152537-862722 | major-trace (Max et al., 2006) | 3 | ||
| Table 10.Analytical results for carbonaceous chondrites pub | 20191018152658-280119 | major-trace (Max et al., 2006) | 6 | ||