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

Table 4

Correlation matrix between parameters determined in water samples.

Variables	pH	EC	Tu	SS	Cu	Zn	Mn	Fe	Cr	As	Pb
pH	1	0.145	−0.335	−0.135	0.370	−0.693	0.068	0.057	0.638	0.328	0.689
EC	0.145	1	−0.100	−0.110	0.732	0.373	0.714	0.551	0.483	0.158	0.483
Tu	−0.335	−0.100	1	0.965	0.059	0.445	−0.248	0.522	−0.465	−0.353	-0.524
SS	−0.135	−0.110	0.965	1	0.035	0.229	−0.274	0.524	−0.448	−0.336	-0.366
Cu	0.370	0.732	0.059	0.035	1	0.323	0.687	0.681	0.765	0.412	0.419
Zn	−0.693	0.373	0.445	0.229	0.323	1	0.257	0.322	−0.037	-0.251	−0.539
Mn	0.068	0.714	−0.248	−0.274	0.687	0.257	1	0.586	0.503	0.313	0.617
Fe	0.057	0.551	0.522	0.524	0.681	0.322	0.586	1	0.126	0.037	0.331
Cr	0.638	0.483	−0.465	−0.448	0.765	−0.037	0.503	0.126	1	0.423	0.509
As	0.328	0.158	−0.353	−0.336	0.412	−0.251	0.313	0.037	0.423	1	0.373
Pb	0.689	0.483	−0.524	−0.366	0.419	−0.539	0.617	0.331	0.509	0.373	1