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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"New" isobaric correction using δ values<br />
(<strong>Kaiser</strong> & Röckmann 2008)<br />
13<br />
δ =<br />
13<br />
13<br />
R<br />
R<br />
r<br />
17<br />
18<br />
17 R 13 R<br />
−1 δ = −1<br />
δ =<br />
17<br />
18<br />
R<br />
R<br />
r<br />
r<br />
−1<br />
45<br />
46<br />
45 13 13 17<br />
R δ = R δ + 2 R<br />
R<br />
r<br />
46<br />
r<br />
r<br />
17<br />
r<br />
δ<br />
18 18 13 17 13 17 13 17 17 2 17<br />
δ = 2 R δ + 2 R R ( δ + δ + δ δ ) + R (2 δ +<br />
r<br />
r<br />
r<br />
r<br />
17<br />
δ<br />
2<br />
)<br />
17<br />
17 18<br />
δ = (1+<br />
Δ)(1+<br />
δ )<br />
0.528<br />
−1<br />
Solve for 3 un<strong>know</strong>ns 13 δ, 18 δ, 17 δ<br />
(including possible 17 O isotope excess aka oxygen isotope<br />
anomalies)