Table 5: Varimax rotated factor loadings matrix and communalities obtained from principal component analysis for five geochemical fractions from stream sediments.

Step II Step III
Variables Comp. I Comp. II Comp. III Communalities Comp. I Comp. II Comp. III Communalities
Ni 0.92 0.78 0.85 0.91
Pb 0.95 0.88 0.94 0.94
Mn -0.92 0.91 -0.58 0.65
Zn 0.79 0.81 0.62 0.48
Cu 0.45 -0.77 0.9 0.7 -0.53 0.77
Cd -0.56 -0.65 0.86 -0.8 0.47
Fe 0.76 0.45 0.75 0.95 0.91
EV 2.31 2.23 1.36 1.79 1.79 1.55
VAR (%) 32.94 31.84 19.42 25.56 25.55 22.11
CVAR (%) 32.94 64.78 84.2 25.56 51.11 73.22
Step IV Step V
Variables Comp. I Comp. II Comp. III Communalities Comp. I Comp. II Communalities
Fe 0.88 0.9 0.94 0.93
Pb -0.81 0.99 -0.94 0.65
Mn 0.71 0.85 -0.79 0.62
Cd 0.92 0.68 0.74 0.71
Zn 0.89 0.43 0.98 0.72 0.3
Cu 0.99 0.61 0.54 0.91
EV 1.92 1.76 1.33 2.08 2.04
VAR (%) 32.05 29.3 22.08 34.73 34.04
CVAR (%) 32.05 61.35 83.43 34.73 68.77

N. B. EV = Eigen Value; VAR = Explained Variance; CVAR = Cumulative Variance Explained.