After incubating for 10 min at 37 °C, EDTA and SDS were added to final concentrations of 15 mM and 1.2%, respectively. Samples were vortexed thoroughly, ammonium acetate was added to a concentration ...

Nitrogen (N) equilibrium isotope fractionation (15α) involving gaseous, dissolved, and solid phases of ammonia (NH3) and ammonium (NH4+) (e.g., NH3(g)–NH3(aq)–NH4+(aq)–NH4+(s)) represents a ...

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