Correlation matrix of elements in the peanut samples.^a,b.

	Na	Mg	Al	K	Ca	V	Cr	Mn	Fe	Co	Ni	Cu	Zn	As	Se	Sr	Mo	Cd	Pb
Na	1.000
Mg	−0.203	1.000
Al	0.166	0.262*	1.000
K	0.429**	0.142	0.216	1.000
Ca	−0.138	0.412**	0.165	0.014	1.000
V	−0.241	0.014	0.013	−0.042	0.104	1.000
Cr	−0.154	0.156	−0.255*	−0.114	0.111	0.150	1.000
Mn	−0.569**	0.338**	−0.072	−0.320**	−0.140	−0.084	0.129	1.000
Fe	0.114	0.152	0.604**	0.265*	0.221	0.142	−0.014	−0.093	1.000
Co	−0.552**	0.263*	−0.116	−0.225	−0.179	−0.022	0.214	0.898**	0.051	1.000
Ni	−0.580**	0.256*	−0.089	−0.392**	−0.124	−0.001	0.173	0.908**	−0.065	0.900**	1.000
Cu	0.514**	0.212	0.066	0.314*	0.050	−0.260*	0.021	0.072	0.056	−0.033	−0.063	1.000
Zn	0.410**	0.296*	0.151	0.463**	0.033	−0.139	−0.010	0.122	0.135	0.022	−0.012	0.806**	1.000
As	0.134	0.136	0.109	0.315*	0.125	0.602**	0.043	−0.409**	0.251*	−0.290*	−0.380**	−0.172	0.015	1.000
Se	0.206	−0.072	−0.300*	0.117	−0.239	−0.205	0.141	0.071	−0.215	0.012	0.014	0.357**	0.475**	−0.146	1.000
Sr	0.088	0.245*	0.183	0.152	0.520**	0.247*	−0.007	−0.444**	0.112	−0.405**	−0.378**	−0.110	−0.054	0.362**	−0.278*	1.000
Mo	0.561**	−0.147	0.112	0.386**	0.108	0.004	−0.059	−0.858**	0.186	−0.794**	−0.887**	0.050	0.070	0.457**	0.040	0.466**	1.000
Cd	−0.480**	0.366**	−0.026	−0.230	−0.005	−0.113	0.176	0.794**	0.034	0.723**	0.688**	0.174	0.084	−0.282*	−0.101	−0.421**	−0.614**	1.000
Pb	−0.060	0.024	0.286*	−0.206	−0.057	−0.560**	−0.159	0.355**	0.124	0.298*	0.264*	0.112	0.050	−0.332**	−0.009	−0.202	−0.252*	0.331**	1.000

^a**: Correlation is significant at the 0.01 level (2-tailed).

^b*: Correlation is significant at the 0.05 level (2-tailed).