Hi all,

I wonder how many of you would hazard a submission of your working d15N and d13C values for NIST1547? I have searched the archives and scavenged a few values. If this has already been done, might you kindly respond with the reference or some such info. If not and I receive enough submissions, I shall post the results on our lab page and make the list aware. You can choose anonymity if you like. I am not interested in comparing labs. I am interested in the material itself and perhaps informal consensus values. If you are interested, please provide me with:

1) Primary Reference Materials used (if not directly relative to NIST / IAEA, please indicate how far down the chain)
2) analytical method
3) d15N vs N2Air
4) d13C vs VPDB
5) notes you care to include

Thank you for your time.


 Andrew Schauer
Department of Earth and Space Sciences
University of Washington
Seattle, WA 98195

[log in to unmask]