Fig. 2. Partition coefficients of N and C between the Fe-Ni alloy melt and the silicate melt as a function of S content in the alloy melt.

(A) For a given P-T condition, the ${\mathit{D}}_{\mathrm{N}}^{\text{alloy}/\text{silicate}}$ does not vary notably with an increase in S in the alloy melt. (B) In the presence of N in the alloy melt, the ${\mathit{D}}_{\mathrm{C}}^{\text{alloy}/\text{silicate}}$ drops by an order of magnitude from S-free to high S-bearing alloys with values as low as ~10 for N-bearing, S-rich alloys. The ${\mathit{D}}_{\mathrm{C}}^{\text{alloy}/\text{silicate}}$ in a N-free system (3, 4, 14, 24, 25, 56) is higher than that in a N-present system in this study and a previous study (12). Error bars in both cases are 1−σ and, if absent, are smaller than the symbol size.