Table 5.

Principal components loadings

Factor	1	2
Eh (mV)	−0.012	−0.212
pH	−0.061	−0.187
log As (μg/L)	0.055	0.179
log B (μg/L)	0.132	−0.005
log Ca (μg/L)	0.13	0.011
log Fe (μg/L)	0.038	0.239
log K (μg/L)	0.13	−0.105
log Mg (μg/L)	0.144	−0.044
log Na (μg/L)	0.144	−0.033
log S (μg/L)	0.048	−0.228
log Sr (μg/L)	0.144	−0.02
log Cl (μg/L)	0.144	−0.031
log DOC (μg/L)	0.048	0.193