Isogeochemists,

I have just analysed phosphate standard NBS120b for
delta 18O.  The standard was kindly donated by Yehoshua Kolodny whose
literature value was 20.1 per mil (which he has said is probably
a bit light as it was run many years ago).  My result was 20.7 per mil.

Has anyone run this standard lately and if so could they
please let me know what value they obtained?  Or if there
is an accepted value for the standard?


Thankyou.

Kim Baublys.



-------------------------------------------------------------------
Kim Baublys
Stable Isotope Geochemistry Laboratory
Department of Earth Sciences
University of Queensland  4072
Australia