Physicochemical Characterization of Mining Waste from the Betare-Oya Gold Area (East Cameroon) and an Adsorption Test by Sabga Smectite (North-West Cameroon)

Table 5

Correlation matrix between heavy metals determined in sediment samples.

Variables	Cu	Ni	Zn	Mn	Fe	Cr	As	Pb
Cu	1	0.299	0.328	0.392	0.773	0.140	0.203	0.277
Ni	0.299	1	0.522	−0.595	0.198	0.341	−0.009	0.482
Zn	0.328	0.522	1	0.050	0.385	−0.058	−0.378	0.311
Mn	0.392	−0.595	0.050	1	0.365	−0.177	0.110	−0.218
Fe	0.773	0.198	0.385	0.365	1	−0.098	0.053	0.026
Cr	0.140	0.341	−0.058	−0.177	−0.098	1	0.660	0.239
As	0.203	−0.009	−0.378	0.110	0.053	0.660	1	−0.149
Pb	0.277	0.482	0.311	−0.218	0.026	0.239	−0.149	1