Stable Isotope Geochemistry


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"Heaton, Timothy HE" <[log in to unmask]>
Reply To:
Stable Isotope Geochemistry <[log in to unmask]>
Wed, 6 Jul 2005 16:12:47 +0100
text/plain (51 lines)
How long will primary IAEA standards last if we use them every day?

Tim H.E. Heaton

NERC Isotope Geosciences Laboratory
British Geological Survey
Keyworth, Nottingham NG12 5GG, England

Tel. +44(0)115 936 3401
Email: [log in to unmask]

-----Original Message-----
From: Stable Isotope Geochemistry [mailto:[log in to unmask]]On
Behalf Of Anthony M. Faiia
Sent: 06 July 2005 15:17
To: [log in to unmask]
Subject: Re: [ISOGEOCHEM] Further Discussion on Carbonate Corrections

--- You wrote:
How about analyzing two, known but very different isotopic composition of
carbonates (NBS-18 and NBS_19) determining the slope and additive
correction every day and forget about calibrating the reference gas.  That
is what we did Revesz-Landwehr 2002;  RCM, 16: 2102-2114.
--- end of quote ---

That is the procedure we use as well. Ideally the samples will fall between the two standard values.

Anthony Faiia
Dartmouth College

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