Table 1.
Sample | Mn K-edg e XANES | |||
---|---|---|---|---|
MnII | MnIII | MnIV | AMON | |
Rel. abundance (%)* | ||||
2015 (0–3 cm) | 52 | 32 | 16 | 2.626 |
2017 (0–3 cm) – R1 | 34 | 33 | 33 | 2.992 |
2017 (0–3 cm) – R2 | 36 | 48 | 15 | 2.789 |
2017 (30–35 cm) – R1 | 55 | 24 | 21 | 2.668 |
2017 (30–35 cm) – R2 | 77 | 17 | 6 | 2.290 |
AMON = Average Mn oxidation number; R1: Replicate 1; R2: Replicate 2.
Relative abundances determined using linear combination fitting.