Table 2 Description of the soil from the urban sinkholes in the study.
From: Heavy metals in the sediments of urban sinkholes in Cancun, Quintana Roo
Site | Dry color | Description | Wet color | Descriptive | pH (water) | pH (KCl) | EC [dS/cm] | Fe2+ [mg/kg d.w] | Eas. Oxi. Org. C (%) | O.M. (%) |
|---|---|---|---|---|---|---|---|---|---|---|
A | 10 YR 5/1 | Gray | 10 YR 2/1 | Black | 6.61a | 6.61a | 4.17 | 184.4 ± 6.2 | 21 ± 1 | 62 ± 1 |
B | 10 YR 6/1 | Gray | 7.5 YR 4/1 | Dark gray | 7.3a | 7.1a | 0.74 | 275.2 ± 23 | 11 ± 1 | 31 ± 1 |
C | 10 YR 4/1 | Dark gray | 10 YR 2/1 | Black | 6.79a | 6.57b | 0.79 | 202 ± 19 | 14 ± 1 | 42 ± 3 |
D | 10 YR 5/1 | Gray | 10 YR 2/1 | Black | 7.23a | 7.11c | 1.4 | 256 ± 33 | 7 ± 1 | 20 ± 3 |
E | 10 YR 5/2 | Grayish brown | 10 YR 2/1 | Black | 7.21a | 7.08a | 1.55 | 247.2 ± 8.3 | 12 ± 2 | 36 ± 6 |
F | 10 YR 4/1 | Dark gray | 10 YR 2/1 | Black | 7.32a | 6.91a | 1.63 | 222.4 ± 6.2 | 5 ± 1 | 16 ± 3 |
G | 10 YR 3/1 | Very dark gray | 7.5 YR 2/1 | Black | 7.17a | 7.1a | 3.61 | 225.2 ± 6.2 | 29 ± 2 | 85 ± 6 |
H | 7.5 YR 3/1 | Very dark gray | 7.5 YR 2/1 | Black | 7.41a | 7.24a | 2.68 | 152 ± 2.1 | 11 ± 2 | 31 ± 6 |
I | 10 YR 2/1 | Black | 10 YR 2/1 | Black | 6.6a | 6.97a | 4.54 | 119.6 ± 10 | 8 ± 1 | 24 ± 3 |
J | 7.5 YR 4/1 | Dark gray | 7.5 YR 2/1 | Black | 7.06a | 6.88a | 1.73 | 138.8 ± 17 | 5 ± 1 | 16 ± 3 |
