Journal of Analytical Methods in Chemistry / 2018 / Article / Tab 3 / Research Article
High-Precision In Situ 87 Sr/86 Sr Analyses through Microsampling on Solid Samples: Applications to Earth and Life Sciences Table 3 Accuracy and reproducibility on reference standard material (NIST-SRM987 and BHVO-2).
Standard Sr content 87 Sr/86 Sr2 SD n Reference Within run measurement on international standard NIST-SRM987 Large size loading (ng) SRM987 150 0.710253 0.000016 59 Long-term reproducibility (from 2013) SRM987 150 0.710248 0.000011 427 Thirlwall [59 ] Small size loading SRM987 10 0.710252 0.000016 47 This study SRM987 12 0.710259 0.000018 92 Charlier et al. [54 ] Drilling procedure on BHVO-2 glass BHVO-2 glass <10 0.703490 0.000092 9 This study BHVO-2 glass 10 0.703492 0.000094 3 Charlier et al. [54 ] 87 Sr/86 Sr2 SE BHVO-2 powder 150 0.703469 0.000004 1 This study 87 Sr/86 Sr2 SD BHVO-2 powder — 0.703479 0.000020 12 Weis et al. [60 ]
2 SD, two standard deviation (external precision); 2 SE, two standard error of the mean; n , numbers of measurements; literature data are reported in italics below our mean values for references.
