Chemical Evaluation of Trace Elements in Bottled Water

Table 3

Correlation between physical parameters and chemical parameters.

Parameters	pH	EC	TDS	Turbidity	Chloride	Total hardness	Calcium	Magnesium	Iron	Copper	Cobalt	Nickel	Fluoride	Sodium	Potassium
pH	1	0.002	0.127	−0.096	−0.730	0.158	0.800	0.134	0.100	−0.123	−0.030	−0.139	0.157	0.003	0.391
EC		1	0.251	0.198	0.234	0.094	0.115	0.162	0.076	0.062	−0.023	0.182	−0.065	0.123	0.381
TDS			1	0.167	0.102	−0.072	0.003	−0.063	−0.030	0.047	0.018	0.301	−0.038	0.135	0.141
Turbidity				1	0.063	0.097	0.078	0.053	0.049	−0.107	0.031	−0.071	−0.003	−0.129	−0.078
Chloride					1	0.255	−0.008	0.207	−0.017	−0.078	0.079	0.034	0.024	−0.033	0.531
Total hardness						1	0.394	0.636	0.119	0.040	0.054	−0.061	0.162	0.058	0.317
Calcium							1	0.136	0.190	−0.031	0.020	−0.244	0.204	0.144	0.409
Magnesium								1	0.022	0.110	0.062	0.016	0.162	−0.034	−0.113
Iron									1	−0.023	0.103	0.110	0.280	0.161	0.246
Copper										1	−0.100	−0.122	−0.047	−0.014	−0.162
Cobalt											1	−0.094	−0.091	−0.212	0.046
Nickel												1	−0.171	−0.214	−0.419
Fluoride													1	−0.032	−0.003
Sodium														1	0.458
Potassium															1

Symbol indicates that correlation is significant at the 0.05 level (2-tailed). Symbol indicates that correlation is significant at the 0.01 level (2-tailed).