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

Table 1

Comparison between the proposed electroanalytical methodology and other ones already published in the literature for the detection of 2,4-D.

Electrode	Technique	pH	Linear range; (mg L^−1)	LD; (𝜇g L^−1)	Sample	Recovery	References
Graphite-polyurethane composite electrode	SWV	2	0.66–2.62	17.6	Soil	93.6% ± 1.2% (sandy soil); 94.6% ± 4.2% (clayey soil)	This work
Static mercury drop electrode	DPV	2.3	0.075–1.75	50	Water and soil	70–85% ± 7% (soil); 90–95% ± 2% (tap water); 80–90% ± 5% (well water); 90% ± 6% (river water)	[2]
Silica-gel modified carbon paste electrode	Amperometry	5	0–2.21	99.5	Water	—	[35]
Molecularly imprinted polypyrrole membrane	CV	6.86	0.22–22.1	183.5	Water	92–108%	[36]