Table 2: Langmuir and Freundlich parameters for sorption of on four depths of iso-humic soil from Chott Mariam, Tunisia.

Depths
0–25 cm25–60 cm60–90 cm90–120 cm

Langmuir parameters (mg/g)0.1530.1340.1440.121
(L/mg)0.00310.00410.00460.0068
0.890.950.930.97

Freundlich parameters 0.000860.0010.00120.002
1.231.271.281.44
0.990.990.980.99