Metal Fractionation and Leaching in Soils from a Gold Mining Area in the Equatorial Rainforest Zone

Table 2

Cumulative metal concentration (CMC) released from soils A and B under natural and simulated rainfall conditions.

Metal	Soil A using NRW	Soil A using ARW	Soil B using NRW	Soil B using ARW
	CMC (mg kg^−1)	CMC (mg kg^−1)	CMC (mg kg^−1)	CMC (mg kg^−1)
Cd	0.63	1.67	0.69	2.6
Cr	0.04	0.03	0.02	0.05
Cu	0.13	0.22	0.67	0.22
Fe	1.35	0.43	3.32	4.85
Mn	0.02	0.03	1.96	9.98
Zn	0.23	0.22	0.21	0.28

NRW: natural rainwater ARW: artificial rainwater.