From: Pulse polarographic determination of thiophanate methyl fungicide in relation to its soil adsorption study
Soil sample
pH
Clay (%)
Organic carbon (%)
Cation exchange capacity (meq/100 g)
I
7.2
32.6
0.8
13.1
II
7.6
18.2
0.9
12.9
III
6.5
20.0
1.5
11.0
IV
6.8
23.4
1.6
12.8