Journal of Analytical Methods in Chemistry / 2018 / Article / Tab 1

Research Article

High-Precision In Situ 87Sr/86Sr Analyses through Microsampling on Solid Samples: Applications to Earth and Life Sciences

Table 1

Blank contamination level.

Laboratory blanksIsotope ratios on blanks

Standard procedure on large size samplesSr pg1 SDn87Sr/86Sr1 SDn
12760320.7074970.0000605
Procedure on small size samples381916
Total procedure (drilling, digestion, and elemental selection)
Chemical digestion and separation17612

1 SD, standard deviation (external precision); n, numbers of blank measurements; the average Sr-isotope value obtained from 5 unspiked blanks is reported to fully characterize the potential contamination component.

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