Dear Listmembers,

I am trying to analyze some atm NH4 samples for N-15 that were collected in
denuders and washed out of the collector with sulfuric acid.  NH4 samples
in HCl freeze-dry nicely, can be rehydraded with a drop of RO water and
placed on chemsorb particles for analysis in a EA-CFIRMS.  Does anyone have
a technique for analyzing NH4 samples trapped in sulfuric acid?  What
happens if you inject conc sulfuric acid into the EA combustion column?

Thanks for any help.

Bill Showers
----------------------------------------------------------
William J. Showers
Associate Professor
Dept. of Marine, Earth, & Atm Sciences
North Carolina State University

(919) 515-7143 - voice
(919) 515-7802 - fax
[log in to unmask] - email