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- W3143404080 abstract "Thermal ionization mass spectrometry (TIMS) offers the excellent precision and accuracy of the Sr and Nd isotopic ratio analysis for geological samples, but this method is labour intensive, expensive and time-consuming. In this study, a new analytical protocol by TIMS is presented that aims at improving analytical efficiency and cutting down experimental cost. Using the single-step cation exchange resin technique, mixed Sr and rare earth elements (REEs) fractions were separated from matrix and evaporated to dryness. Afterwards, mixed Sr + REEs fractions were dissolved and loaded onto the same Re filament using 1 L of 2 M HCl. Then, Sr and Nd were sequentially measured without venting using TIMS. In r–Nd isotopes xtraction chromatography hermal ionization mass spectrometry contrast to conventional TIMS methods, the merits of this analytical protocol are its costand timesaving adaptations. The applicability of our method is evaluated by replicated measurements of 87Sr/86Sr and 143Nd/144Nd for nine international silicate rock reference materials, spanning a wide range of bulk compositions. The typical internal precision in this study is ca. 0.001% (RSE) for 87Sr/86Sr and 143Nd/144Nd; the analytical results obtained for these standard rocks show a good agreement with reported values, indicating the effectiveness of the proposed method." @default.
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- W3143404080 date "2012-01-01" @default.
- W3143404080 modified "2023-09-26" @default.
- W3143404080 title "Rapid and precise determination of Sr and Nd isotopic ratios in geological samples from the same filament loading by thermal ionization mass spectrometry employing a single-step separation scheme" @default.
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