Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane Electrode

Table 2

Some physicochemical parameters of the soil studied.

Sample	pH CaCl2	Organic matter; (g dm^−3)	Cation exchangeable capacity; (mmolc dm^−3)	Clay %	Silt %	Sand %
AM1 0–25 cm	5.1	12	44	6.2	0.8	93
AM1 25–50 cm	5.3	3	29	7.1	0.9	91
AM1 50–75 cm	5.2	6	37	6.1	1.9	92
AM2 0–25 cm	5.1	21	74	36.9	10.1	53
AM2 25–50 cm	5.2	15	67	42.8	12.2	45
AM2 50–75 cm	5.4	8	58	39.9	12.1	48