Exchange Characteristics of Lead, Zinc, and Cadmium in Selected Tropical Soils

Table 2

Physicochemical properties of the soil samples.

Sample	pH		Org. C	T. N	Exchangeable bases (cmolc kg^−1)				CEC	Base sat.	Particle size analysis (%)
	KCl	H2O	%	%	Ca	Mg	Na	K	Meq/100 g	%	Sand	Silt	Clay
AD2	6.6	7.6	3.8	0.5	1.5	0.8	0.1	0.2	3.6	71.8	51.2	31.4	17.4
AD3	5.7	6.7	1.2	0.3	1.6	0.7	0.1	0.2	3.6	72.2	81.2	11.4	7.4
NB	6.5	7.4	2.8	0.4	1.4	0.7	0.1	0.2	2.9	79.5	53.2	27.4	19.2

Org. C: organic carbon; T. N.: total nitrogen; CEC: cation exchange capacity; Base sat.: base saturation.