>Hi, Isotopists:
>
>I mixed tap water with D2O to make a working standard of delta D ~ 34 for
>D/H analysis. The Delta D values of the mixture fluctuate by + - 4 while
>our other standards with normal Delta D values have the precision of + -
>1.5. Can anyone explain why?
>
>Dachun Zhang
>Global Geochemistry Corp.
>6919 Eton Ave.
>Canoga Park, CA 91303
>818-992-4103 (ext.21)


Dachun,

Could you send me some of your "magic" Zn for H/D analysis like you
promised earlier?

Hal


Dr. Haraldur R. Karlsson
Associate Professor of Geosciences
Texas Tech University
Box 41053
Lubbock, TX 79409, USA