Dave-
I know of one publication concerning automated analysis of d18O through
pyrolysis and rumour of another out there somewhere of very recent vintage.
The old-fashioned (non-automated)  way is very labor intensive and
extremely cumbersome.  Here's the reference I know and I'll hunt for the
other:

Werner, R.A. et al. 1996.  On-line determination of d18O values of organic
substances.  Analytica Chimica Acta, v. 319, p. 159-164.


Jim

>Dear all
>
>Can anyone point me to a publication(s) describing the method for
>determining 18O in cellulose?
>
>Elemental analysers can be configured for O determination in organics by
>pyrolysis over Ni-C catalysts - has anyone attempted oxygen isotope
>analysis by this method of preparation (i.e. He flow- GC-IRMS)?
>
>Regards
>
>
>Dave Mattey
>
>Geology Dept, Royal Holloway College, University of London, Egham Hill,
>Egham, Surrey, TW20 0EX
>
>Tel:      01784  443587          Office
>                443105          Isotope lab office
>                        443637          Prism lab
>                        443629          Optima lab
>
>                        471780          FAX


Jim Burdett
Cornell Laboratory for Stable Isotope Analysis
125 Boyce Thompson Intitute
Tower Rd.
Ithaca NY  14853

Telephone:  (607)  254-6732 (office), 254-1227 (prep lab), 254-1382 (mass
specs)
FAX:  (607)  254-1382