Dear list members,
With some solutions -very poor in N at starting-, we have some problems with
high salt content samples for N-15 analysis with our EA. Such samples seem
to involve an alkaline fusion process that considerably reduce the lifetime
of the quartz furnace tube. I was wondering if anybody on Isogeochem is
using an alternative to the internal quartz tube in the combustion tube; In
particular, I would appreciate some information from users who've tried a
metallic combustion tube (lifetime, setup, influence on measurement's
precision...)
Any suggestions or experiences would be appreciated.

Thanks in advance
Jean-Noël
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Jean-Noël THIBAULT      	Mass Spectrometry Laboratory       
INRA Saint Gilles	   	Phone : (33) 99.28.50.67
Domaine de la Prise           	Fax : 	(33) 99.28.50.80
35590 Saint Gilles 
France		    E-mail:[log in to unmask]
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