Dear Seth,
I have conducted a series of experiments to see what effect oven drying
at 60°C and freeze-drying has on a variety of ammonium- and
nitrate-containing solutions either in low or higher concentrations
(standards dissolved in bidest water) regarding the effects on recovery
and nitrogen isotopic composition ... I will have a look for the exact
results and mail them to your personal email address - or if there is
some handwaving, to the isogeochem list - tomorrow.
Have a nice day,
Christian.

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Christian Ostertag-Henning          tel: ++49-9131-852-2660 (office)
Institute of Geology                       ++49-9131-852-6243 (lab)
University of Erlangen-Nürnberg         fax: ++49-9131-852-9294
Schlossgarten 5
D - 91054 Erlangen                  email: [log in to unmask]

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