Table 5.

Table of PCA factor loadings matrix.

Parameters	PCA 1	PCA 2	PCA 3
ε 280/465	0.96	0.13	−0.08
ε 280/665	0.67	0.54	−0.71
ε 465/665	0.96	0.13	−0.08
IFl (I)/IFl (II)	0.78	−0.53	0.33
HI	0.26	0.90	0.13
Atrazine sorption	−0.70	−0.17	−0.42
DDT sorption	0.71	−0.78	0.07
Chrysene sorption	0.17	−0.48	−0.77
% of variance	45	30	18
Cumulative %	45	75	93

Loading ≥ 0.5 is shown in bold.