Is there any isotopic fractionation of nitrate associated with diffusion and advection?

Priscillia Semaoune (1) , Mathieu Sebilo (1) , Joelle Templier (1) , Sylvie Derenne (1)

1 Bioemco - Biogéochimie et écologie des milieux continentaux

We experimentally investigated the effect of the physical process of transport (diffusion and advection) on the isotopic composition of nitrate (delta N-15 and delta O-18). Strict diffusion of nitrate in water was studied using a modified Richter apparatus. The combination of diffusion and advection processes was followed by elution of nitrate solution onto silica gel column. No significant isotopic fractionation was observed.

Domaines: Géochimie

Priscillia Semaoune, Mathieu Sebilo, Joelle Templier, Sylvie Derenne. Is there any isotopic fractionation of nitrate associated with diffusion and advection?. Environmental Chemistry, 2012, 9 (2), pp.158-162. ⟨10.1071/EN11143⟩. ⟨hal-01195680⟩