来源：Journal of Analytical Atomic Spectrometry, 2018, 33(1): 141-150.
DOI：10.1039/c7ja00322f
摘要
The external reproducibility (2σSD) of Ca stable isotope ratio measurements (δ44/40Ca) using double-spike (43Ca–48Ca) thermal ionization mass spectrometry (TIMS) is better than 0.08 ‰ using our proposed loading technique.
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