Research Article

Recommendations and Protocols for the Use of the Isotope Ratio Infrared Spectrometer (Delta Ray) to Measure Stable Isotopes from CO2: An Application to Volcanic Emissions at Mount Etna and Stromboli (Sicily, Italy)

Figure 4

Box-and-whisker plots for (a–d) the time required to reach 99% of the maximum precision and (e–h) the accuracy of δ13C. Precision and accuracy are studied in function of the peak integration (a, e), the range of use of the dilution tube (b, f), the isotopic signature of the reference gas (c, g), and the kind of protocol applied for the flushing and reference analysis time (d, h). Details provided in the text and in Methods.
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