Goldschmidt Abstracts 2020
DOI: 10.46427/gold2020.571
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Effect of Fractionation Rate on High-Precision Multidynamic TIMS Sr Isotope Analysis and the 84Sr Abundance of the Earth

Abstract: The multidynamic acquisition mode in TIMS isotopic analysis can effectively minimize the bias in isotopic ratios due to Faraday cup deterioration [1, 2]. However, a potential problem of this mode is that the normalising and normalised ratios are not measured simultaneously. If the fractionation is fast, this can lead to a bias in the fractionation-corrected isotopic ratios, as demonstrated in the recent studies on highprecision multidynamic Nd isotope analysis [2, 3]. Here we show that this effect can be prono… Show more

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