From: Abiotic ammonium formation in the presence of Ni-Fe metals and alloys and its implications for the Hadean nitrogen cycle
Sample
NTOTAL [wt.%]
Fe0
0.0124 ± 0.001
Ni0
0.0012 ± 0.0005
Ni50Fe50
0.0030 ± 0.0005
Ni81Fe19
0.0009 ± 0.0005