Table 3. LCF results for spectra from Long Lake mine tailings samples with a binary mixture of arsenopyrite and scorodite or kankite.
Spectra were collected simultaneously with both HERFD and TFY detection. As(−I) is represented by arsenopyrite and As(V) is either scorodite or kankite. The LCF results for all spectra are included in Table S3 of the supporting information.
| Sample # | Detection Mode | As(−I) (% As atoms) | As(V) (% As atoms) | R 2 |
|---|---|---|---|---|
| 1 | HERFD | 20 ± 1 | 80 ± 1 | 0.0036 |
| 1 | TFY | 29 ± 1 | 71 ± 1 | 0.0081 |
| 2 | HERFD | 96 ± 1 | 4 ± 1 | 0.0002 |
| 2 | TFY | 92 ± 2 | 8 ± 1 | 0.0128 |
| 3 | HERFD | 98 ± 1 | 2 ± 1 | 0.0004 |
| 3 | TFY | 94 ± 1 | 6 ± 1 | 0.0085 |
| 4 | HERFD | 87 ± 1 | 13 ± 1 | 0.0046 |
| 4 | TFY | 85 ± 1 | 15 ± 1 | 0.0081 |
| 10 | HERFD | 13 ± 1 | 87 ± 1 | 0.0065 |
| 10 | TFY | 21 ± 1 | 79 ± 1 | 0.0031 |
| 25 | HERFD | – | 100 ± 1 | 0.0071 |
| 25 | TFY | 15 ± 2 | 85 ± 2 | 0.0125 |
| 26 | HERFD | 97 ± 1 | 3 ± 1 | 0.0003 |
| 26 | TFY | 93 ± 2 | 7 ± 1 | 0.0114 |