Electroanalytical Methodology for the Direct Determination of 2,4-Dichlorophenoxyacetic Acid in Soil Samples Using a Graphite-Polyurethane Electrode
Figure 5
SWV curves for the 2,4-D herbicide in the two soil solution samples extracted at a 25 cm depth. (a) AM1 and (b) AM2. Parameters: = 50 s−1, = 0.50 V, V, = 10 s, and = −0.40 V. Inset: decay of concentration with time. Samples: (a) sample without herbicide, (b) 24 hours, (c) 48 hours, (d) 72 hours, (e) 7 days, (f) 30 days, and (g) 60 days for AM1 and (a) sample without herbicide, (b) 24 hours, (c) 48 hours, (d) 72 hours, (e) 7 days, (f) 30 days, and (g) 85 days for AM2.
