Aging Process of Cadmium, Copper, and Lead under Different Temperatures and Water Contents in Two Typical Soils of China

Table 1

Physicochemical properties of the soil samples.

Soil samples	pH	CEC (cmolc/kg)	OM (g/kg)	Soil texture (%)			Total heavy metal concentrations (mg/kg)			DCB-metal oxides (g/kg)
				Clay	Silt	Sand	Cd	Cu	Pb	Al	Fe	Mn
Red soil	7.17	5.41	7.1	5.1	33.8	61.2	0.09	18.2	29.2	1.84	11.64	0.33
Brown soil	4.58	5.89	12.1	1.4	17.4	81.2	0.09	11.4	18.9	0.92	4.98	0.28