Table 2.
Characteristics of soils A and B.
| Soil A | Soil B | |
|---|---|---|
| TPHa (mg kg−1) | 22,700 ± 589 | 31,500 ± 980 |
| Bulk density (g ml−1) | 0.973 | 0.823 |
| Moisture content in % | 15 ± 2 | 21 ± 4 |
| Moisture content in % at WHCb | 38 ± 6 | 44 ± 8 |
| pH in Water | 6.8 ± 0.3 | 7.5 ± 0.2 |
| pH in 0.01 M CaCl2 | 6.5 ± 0.0 | 6.6 ± 0.0 |
| LOI in % | 12 ± 0.7 | 15 ± 1.2 |
| Organic Carbon in % | 7 ± 2 | 9 ± 3 |
| TOCc(μg g−1) | 168 ± 7 | 280 ± 68 |
| Carbon in % | 9 ± 1 | 8 ± 2 |
| Nitrogen in % | 5 ± 0.5 | 2 ± 1 |
| Microbial respiration (mg CO2 kg−1 soil d−1) | 5.30 | 4.03 |
| Ammonium in % | Not detected | Not detected |
| Nitrate in % | Not detected | Not detected |
| Phosphate in % | 0.0016 | Not detected |
| Total heterotrophs (CFU g−1) | 6.0 × 105 | 5.1 × 106 |
| Total degraders (CFU g−1) | 1.4 × 104 | 1.1 × 105 |
Note: a TPH = Total Petroleum hydrocarbon, b WHC = Water holding capacity, c TOC = Total organic carbon.