Dear Listmemebers,

I'm about to start running NO3 samples from water, extracted as AGNO3, in
our (very young) stable isotopes lab. I am thinking of using continuous flow
mass spec, running samples  through the Fisons EA and Sira II. I was
wondering if anyone would give me a tip on whether it is really necessary to
add a oxidation catalyst to the AgNO3 samples , as is recommended in our EAs
manual?

Thanks,



Rodrigo Maia
Stable Isotopes Lab.
CEBV ICAT DBV - Faculdade Ciencias Lisboa
Portugal