Hi Chris,
you can use the common CuO Oxidation followed by BSTFA Derivatisation and IRMS,
or you can use Curie point pyrolysis coupled simultaneously to MS and IRMS.
Cheers
gerd

Turney Chris wrote:

> Hi Everyone,
>
> We're currently extracting lignin from modern plant material for d13C
> measurement.  Previously, we've undertaken digestion in 72% H2SO4, followed
> by sequential treatment in 2:1 benzene:ethanol (by volume), ethanol and
> distilled water solutions within a Soxhlet apparatus (TAPPI, 1987).
> However, I don't like using benzene and was wondering whether any users have
> alternatives to suggest?  Anything would be a great help.
>
> Many thanks in advance.
>
> Best wishes,
>
> Chris
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