Table 2. Mean values of the pH, particle size, organic carbon (O. C.), cation-exchange capacity (CEC), CaCO3, and Fe total (Fe) content at different depths in contaminated soils (reddish-yellow band, in cursive).
|
depth |
pH |
Sands |
Silts |
Clays |
OC |
CEC |
CaCO3 |
Fe |
||||||||
|
|
|
SE |
% |
SE |
% |
SE |
% |
SE |
% |
SE |
cmolc kg-1 |
SE |
% |
SE |
% |
SE |
|
0-1 |
5.6 |
0.2 |
nd |
nd |
nd |
nd |
5.6 |
0.9 |
0.41 |
0.08 |
nd |
nd |
nd |
nd |
5.46 |
0.5 |
|
1-2 |
6.0 |
0.1 |
nd |
nd |
nd |
nd |
5.9 |
0.8 |
0.33 |
0.04 |
nd |
nd |
3.3 |
0.5 |
4.62 |
0.7 |
|
2-3 |
6.3 |
0.1 |
nd |
nd |
nd |
nd |
6.4 |
0.8 |
nd |
nd |
nd |
nd |
1.9 |
0.4 |
4.09 |
0.6 |
|
3-4 |
6.8 |
0.1 |
nd |
nd |
nd |
nd |
6.7 |
0.8 |
nd |
nd |
nd |
nd |
3.0 |
0.2 |
3.99 |
0.3 |
|
4-6 |
7.6 |
0.1 |
nd |
nd |
nd |
nd |
11.0 |
0.4 |
0.49 |
0.05 |
nd |
nd |
10.5 |
0.9 |
2.70 |
0.2 |
|
13-15 |
7.9 |
0.1 |
nd |
nd |
nd |
nd |
11.4 |
0.5 |
0.50 |
0.03 |
nd |
nd |
12.7 |
1.1 |
2.73 |
0.3 |
|
28-30 |
8.0 |
0.1 |
nd |
nd |
nd |
nd |
11.7 |
0.8 |
0,55 |
0.02 |
nd |
nd |
13.1 |
1.0 |
2.76 |
0.3 |
|
100-150 |
8.0 |
0.1 |
53.2 |
2.2 |
32.1 |
1.6 |
14.7 |
1.4 |
0.60 |
0.07 |
16.2 |
1.5 |
12.8 |
0.6 |
2.89 |
0.2 |
SE, standar error; nd, not determined.