Table 2. Iron and organic matter concentrations and organic matter quality indicators of the experimental waters.
| sampling | pH | OC | Fe | Fe∶OC | E2∶E3 | E4∶E6 | SUVA254 | FI | |
| date | (mmol L−1) | (µmol L−1) | molar ratio 10−3 | (L mg−1 m−1) | |||||
| Emån I | Jul-12 | 6.9 | 1.6 | 10.2 | 7 | 5.1 | 7.8 | 4.6 | 1.38 |
| Emån II | Nov-12 | 7.0 | 1.6 | 14.3 | 9 | 4.9 | 9.7 | 3.6 | 1.38 |
| Ljungbyån | Dec-12 | 6.8 | 2.0 | 12.1 | 6 | 5.2 | 11.4 | 3.5 | 1.46 |
| Lyckebyån | Jul-12 | 7.2 | 1.4 | 30.6 | 22 | 4.7 | 9.7 | 4.7 | 1.41 |
| Mörrumsån | Dec-12 | 7.6 | 1.1 | 9.5 | 8 | 5.7 | 10.5 | 3.2 | 1.38 |
| Helgeån I | Jun-12 | 7.8 | 1.1 | 17.3 | 16 | 5.1 | 10.4 | 4.6 | 1.43 |
| Helgeån II | Nov-12 | 7.4 | 1.8 | 32.9 | 18 | 4.4 | 8.3 | 4.2 | 1.40 |
| Lagan | Jan-13 | 7.2 | 1.2 | 17.9 | 15 | 4.6 | 7.8 | 4.1 | 1.39 |
| Nissan | Jan-13 | 7.5 | 1.4 | 22.0 | 16 | 4.3 | 7.7 | 4.3 | 1.40 |