Assessment of Major and Trace Elements in Drinking Groundwater in Bisha Area, Saudi Arabia

Table 4

Correlation coefficients of 15 major and trace elements of the 23^$ groundwater samples.

Elements	Na	Mg	K	Ca	V	Cr	Mn	Co	Ni	Cu	Zn	As	Se	Cd	Pb
Na	1.00
Mg	0.54	1.00
K	−0.15	0.69	1.00
Ca	0.92	0.69	−0.02	1.00
V	−0.08	0.28	0.18	0.12	1.00
Cr	0.09	0.23	0.13	0.18	0.40	1.00
Mn	0.17	−0.13	0.03	−0.06	−0.45	−0.18	1.00
Co	0.56	0.44	0.13	0.53	0.08	0.40	0.15	1.00
Ni	0.32	0.23	0.09	0.27	−0.26	−0.10	0.17	0.62	1.00
Cu	0.23	−0.11	0.02	−0.03	−0.51	−0.27	0.95	0.28	0.38	1.00
Zn	0.02	−0.10	−0.06	−0.08	−0.54	−0.21	0.05	0.01	0.35	0.09	1.00
As	0.34	0.12	0.01	0.22	−0.01	0.40	0.29	0.52	0.49	0.40	−0.03	1.00
Se	0.88	0.59	−0.13	0.92	0.05	0.17	−0.05	0.37	0.20	−0.04	−0.07	0.19	1.00
Cd	−0.02	0.38	0.44	0.08	0.21	0.51	−0.09	0.48	0.34	−0.09	−0.05	0.14	−0.04	1.00
Pb	0.21	0.29	0.17	0.23	0.16	0.48	0.12	0.66	0.56	0.16	−0.08	0.47	0.15	0.85	1.00

^$Two samples were missed. Correlation is significant at the 0.05 level (2-tailed). Correlation is significant at the 0.01 level (2-tailed).