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Jan Kaiser, How accurate do we know 13C/12C, 18C/16O and 17O ...

Jan Kaiser, How accurate do we know 13C/12C, 18C/16O and 17O ...

Jan Kaiser, How accurate do we know 13C/12C, 18C/16O and 17O ...

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Why should <strong>we</strong> care about R?<br />

Nice to <strong>know</strong> …<br />

To make isotope measurements SI traceable<br />

[but: precision of R always worse than δ ]<br />

To cross-check with data-reduction coefficients from<br />

other molecules (O 2 , CO, N 2 O, SO 2 )<br />

[B, C, D, E, F, (G, H, I) – see poster P10]<br />

To callow calculation of isotopologue mixing ratios

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