Table 2.
Filter material characteristics.
| Material | pHa | SSA (m2/g)b,d | OM (g/kg DM)a | D50, mmc | Cu (D10/D60)c |
|---|---|---|---|---|---|
| LTU-TOP | 6.1 | 0.40 ± 0.00 | 14.3 | 0.91 | 0.19 |
| Hekla | 7.7 | 0.85 ± 0.06 | 57.8 | 0.61 | 0.18 |
| Hekla-B | 8.8 | 3.13 ± 0.17 | 97.0 | 0.65 | 0.18 |
| DWA | 8.3 | 0.87 ± 0.09 | 2.9 | 0.77 | 0.27 |
| DWA-chalk | 9.2 | 0.87 ± 0.05 | 3.2 | 0.79 | 0.27 |
| Hasselfors | 8.3 | 3.09 ± 0.11 | 60.6 | 2.86 | 0.15 |
| NC-USA | 6.3 | 1.27 ± 0.02 | 19.0 | 0.62 | 0.13 |
| KB-OHIO | 8.0 | 3.93 ± 0.17 | 27.5 | 0.91 | 0.24 |
| BN-OHIO | 7.8 | 3.09 ± 0.47 | 46.3 | 0.58 | 0.25 |
| ORBICON | 8.3 | 1.84 ± 0.02 | 16.6 | 0.44 | 0.20 |
a
Triplicate determination.
b
Duplicate determination.
c
Calculated by linear LaGrange interpolation.
d
± standard deviation.