Dear Isogeochemists,

I would like to know if some lab or someone that regularly uses the 
silver oxide method of Silva et al. (2000), in order to extract the NO3 
dissolved in groundwater samples for d15N-NO3 and d18O-NO3 analyisis, 
applies any treatment to the residual AgCl so that the Ag can be reused 
or recycled.

Any suggestion will be appreciated or pointing towards a useful 
reference would be enough.

Thanks. Best regards.

/Roger Puig/
Grup Consolidat de Mineralogia Aplicada i Medi Ambient (MAiMA)
Departament de Cristal·lografia, Mineralogia i Dipòsits Minerals
Facultat de Geologia. Universitat de Barcelona
c/ Martí i Franquès s/n
08028 Barcelona, Spain
e-mail: [log in to unmask] <mailto:[log in to unmask]>
Tel: +34 93 402 13 45
Fax: +34 93 402 13 40