Dear List Members

 

I am experiencing a problem with our the Multiflow carbonate prep. side
of our GV Isoprime IRMS.  The specific problem is that when we run a
batch of carbonate samples the retention time for the CO2 peak increases
with each sample. As a consequence after about the 4th sample the CO2
peak is outside of the 40sec MS window. Has anyone experienced this
problem before? I imagine it is something to do with the chromatography
though the packed column in the oven. Does anyone know what the material
is in the packed column? 

 

All help gratefully received.

 

Cheers Steve 

 

------------------------------------------------------------------------
------------

Dr Stephen Grimes

Lecturer in Stable Isotope Geochemistry and Climate Change

School of Earth Ocean and Environmental Sciences

University of Plymouth

Drake Circus

Plymouth

Devon 

PL4 8AA

 

Office: Room 101, 4 Portland Mews

Tel. +44 (0)1752 233109

Fax. +44 (0)1752 233117

e-mail. [log in to unmask]

Web page.
http://www.plymouth.ac.uk/pages/dynamic.asp?page=staffdetails&id=sgrimes

-----Original Message-----
From: Stable Isotope Geochemistry [mailto:[log in to unmask]] On
Behalf Of Pier de Groot
Sent: 27 July 2005 13:53
To: [log in to unmask]
Subject: [ISOGEOCHEM] Oecologica magazine

 

Dear all,

Is there any place in Belgium or the Netherlands where is a subscription
to the magazine Oecologica?
If so, please let me know 'off the list'.

Best wishes,
Pier.
****************************************************************
Delta Isotopes Consultancy

Dr. Pier A. de Groot
Pastoor Moorkensstraat 16
2400 Mol - Achterbos
Belgium
Tel. +32 (0)14 326 205
e-mail: [log in to unmask] or [log in to unmask]

Visit my WEB-site about my "Handbook of Stable Isotope Analytical
Techniques", including pdf files of an order form and a flyer for
downloading, at:
http://users.pandora.be/handbook/index.html
last update: October 1, 2004
Volume I is now available. Volume II is expected to be available second
half of 2005.
****************************************************************