I would like to ask anyone what %C they usually get for the NIST 1547 peach
leaves.  From the original round robin that Rick and his colleagues so
kindly organized the %C averaged out to 45.5%.  However, this would seem to
be too low, and using a normal C/N analyzer set up for % we have come up
with 47.2%.  Does anyone else have a %C on this material?

Paul Brooks.



At 09:38 AM 7/18/03 -0700, you wrote:
>Hello Rick,
>I would really appreciate the data for Bovine Liver #1577b, Peach Leaves
>1547, and Buffalo River Sediment #2704. Thanks, Shapna.
>
>-----Original Message-----
>From: Stable Isotope Geochemistry [mailto:[log in to unmask]]On
>Behalf Of Rick Heemskerk
>Sent: Monday, July 14, 2003 11:36 AM
>To: [log in to unmask]
>Subject: Re: [ISOGEOCHEM] NIST material ring test summary
>
>
>Hi Harry,
>
>I will email you the data off list. The data is not totally up to date but
>still valid.
>
>Anyone else interested let me know.
>
>Rick
>
>On 14 Jul 2003 at 13:08, Harry W. Read wrote:
>
> > Dear Colleagues:
> >
> > I understand that in 1999 or 2000, there was a ring test for 15N/14N and
> > 13C/12C on the following NIST standards materials:
> >
> > Bovine liver #1577b;
> > Peach leaves #1547;
> > Coal (subbituminous) #2682b;
> > Coal (bituminous) #2685b;
> > Buffalo River sediment #2704;
> >
> > Does anyone know where I could get the table of results from that study?
> >
> > Thanks
> >
> > Harry Read
> >
> > *************************
> > Harry W. Read
> > Dept. of Soil Science
> > 1525 Observatory Dr.
> > Madison, WI  53706
> > (608) 265-4848
> > FAX: (608) 265-2595
> > *************************
>
>A. Richard Heemskerk                    [log in to unmask]
>Environmental Isotope Laboratory        Telephone: 519-888-4567
>Department of Earth Sciences            Extension: 5838
>University of Waterloo                          Facsimile: 519-746-0183
>Waterloo, Ontario, Canada N2L 3G1
>http://sciborg.uwaterloo.ca/research_groups/eilab



Paul D. Brooks,
Center for Stable Isotope Biogeochemistry,
Dept. Integrative Biology MC3140,
3060 Valley Life Sciences Building,
UC Berkeley, Ca. 94720-3140.

[log in to unmask]

phone (510)643-1748,
FAX (510)643-1749

http://ib.berkeley.edu/groups/biogeochemistry/