Hi Gilles,
doing on-line measurements, coupling your EA (with Dumas combustion)
directly to the IRMS,
should be easier than trapping your N2 on the molecular sieve.
gerd
Dr. Gerd Gleixner
Lehrstuhl fuer Allgemeine Chemie und Biochemie
TU-Muenchen
Voettingerstasse 40
85350 Freising-Weihenstephan
Deutschland
Tel. 0049 8161 714353
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