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.