Ciao Clarissa,

My contribution to the subject: we used a Varian 3400 GC coupled to a Thermo
Delta Plus through the Finnigan Mat Combustion Interface. We measured d13C
of glycerol in wine (column CP-WAX57CB, 25 m length, 0.25 mm i.d., 0.20 ím
film thickness). We had to accept a SD of 0.6 permille for this matrix.
Below, the reference.


Calderone G, Naulet N, Guillou C, Reniero F. Characterization of European
wine glycerol: stable carbon isotope approach. Journal of Agricultural and
Food Chemistry. 2004;52:5902


A presto,
Giovanni Calderone


********* IMPORTANT *********

As from 9 of May 2006, my new email address will be:

     [log in to unmask]

However, the present one – [log in to unmask] – will be still working
for a while.

********* IMPORTANT *********


----------------------------------
Giovanni Calderone, PhD
EC-Joint Research Centre
Institute for Health & Consumer Protection Physical and Chemical Exposure
Unit - BEVABS
TP740 via Fermi, 2 21020 ISPRA Italy
Tel. Off.: +(39) 0332 78 5668
Tel. Lab.: +(39) 0332 78 5258
Fax: +(39) 0332 78 9303
http://ihcp.jrc.it/
http://hosting.jrc.cec.eu.int/pce/
e-mail: [log in to unmask]
from 9 May 2006: [log in to unmask]
personal: [log in to unmask] 
________________________________________
From: Stable Isotope Geochemistry [mailto:[log in to unmask]] On Behalf
Of Geokarst Engineering S.r.l.
Sent: mercoledì 19 aprile 2006 14:13
To: [log in to unmask]
Subject: [ISOGEOCHEM] info about Gas Chromatography

Hallo,
I’m writing to the list for ask information about the old GC-combustion of
Finnigan. Our laboratory has a old instrument type 6890 connects at the Mass
Spectrometer. I kindly ask you if somebody is using this instrument (the
same type) for to know the uncertainty of analysis.
Thank you in advance
Best regards
Clarissa