Table 2.
Geophagic soil characteristics, average and standard error (es)
| Geophagic soil | Average ± es | |
|---|---|---|
| Granulometry | Clay | 14.7 ± 1.4 |
| Silt | 8.9 ± 0.9 | |
| Sand | 76.4 ± 1.2 | |
| pH (H2O) | 4.2 ± 0.1 | |
| Total carbon and nitrogen | N (%) | 0.23 ± 0.02 |
| C (%) | 3.18 ± 0.31 | |
| C/N | 13.71 ± 0.41 | |
| Pseudo total elements (mg/kg) | Al | 77273 ± 5638 |
| Ca | 427 ± 91 | |
| Co | 6.08 ± 1.61 | |
| Cr | 46.67 ± 9.64 | |
| Cu | 15.49 ± 4.48 | |
| Fe | 39394 ± 6102 | |
| K | 476 ± 192 | |
| Mg | 263 ± 108 | |
| Mn | 201 ± 61 | |
| Mo | 2.57 ± 0.58 | |
| Na | 104 ± 14 | |
| Ni | 17.35 ± 5.81 | |
| P | 287 ± 51 | |
| Pb | 39.93 ± 5.28 | |
| S | 279 ± 16 | |
| Si | 279 ± 98 | |
| Sn | 3.17 ± 0.28 | |
| Ti | 2212 ± 491 | |
| V | 67.42 ± 24.54 | |
| Zn | 55.51 ± 10.10 | |
| Dithionite-extractable metals (mg/kg) | Al | 3580 ± 463 |
| Fe | 7988 ± 852 | |
| Ti | 156 ± 37 |