Square Wave Voltammetric Determination of Residues of Carbendazim Using a Fullerene/Multiwalled Carbon Nanotubes/Nafion/Coated Glassy Carbon Electrode

Table 3

Physicochemical characteristics of the studied soils.

Sample code	Depth (cm)	pH KCl	pH H2O	pH	CEC (meq/100 g)	Exchangeable acidity; (meq/100 g)	OC; (%)	OM; (%)	Humidity (%)	Granulometry
										Clay (%)	Silt (%)	Sand (%)
NK1	20–33	4.69	6.38	1.69	21.68	1.18	2.64	4.60	2.01	31	27	42
NK3	0–20	4.02	5.52	1.50	24.32	3.58	2.94	5.07	0.70	35	25	40

CEC (meq/100 g): cation exchange capacity; OC: organic carbon; OM: organic material.