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).