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. 2010 Oct 4;398(7):3115–3125. doi: 10.1007/s00216-010-4231-5

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© The Author(s) 2010

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Fig. 2 — The Zn isotope data (δ⁶⁶Zn values) determined for London Zn–DS mixtures vs. time of data acquisition for two measurement sessions that had duration of a 3 h and b 23 h. In b, the measured δ⁶⁶Zn values (filled symbols) are corrected for both the absolute offset and the drift in mass bias behavior (open symbols). This improves the precision of the dataset to ±0.04‰ (2 SD, open symbols)