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Stable Isotope Geochemistry

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From:
[log in to unmask] (Dave Mattey)
Date:
Fri, 20 Sep 1996 14:00:14 +0100
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>A lab that I've never seen before (honest) uses plain flour (not self
>raising) as an internal standard for carbon isotope analysis. Is this a
>reliable standard? won't the flour degrade in time and will this
>affect it's isotopic signature? If it's any help it is one of our
>leading supermarkets own brand. It just doesn't seem as exotic as
>using some obscure Belemnite.
>
>Oh, if any Florida resident is passing Master Chenille's residence,
>pop in and give him a good slapping.
>Cheers
>Bob Brown
>Univeristy of Newcastle


I believe cane sugar can be used as a reliable carbon internal standard
with a value of around -10 permil. Does anyone know of any lab that uses
standard eggs? Perhaps these labs could club together and distribute a
standard Victoria sponge.

Dave Mattey

Geology Department, Royal Holloway College, University of London, Egham
Hill, Egham, Surrey TW20 0EX

Tel:    01784  443587         Office
                        443637          Isotope lab (Prism)
                        443629          Isotope lab (Optima)
                        471780          FAX






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