因子 | 1 | 2 | 3 | 4 |
As | 0.953 | 0.075 | 0.007 | −0.062 |
Cd | 0.118 | 0.907 | −0.021 | −0.202 |
Co | 0.549 | 0.126 | 0.527 | 0.484 |
Cr | −0.018 | 0.513 | 0.118 | 0.212 |
Cu | −0.027 | 0.296 | 0.801 | 0.235 |
Fe | 0.195 | 0.200 | 0.680 | −0.202 |
Hg | 0.452 | −0.240 | 0.317 | −0.530 |
Mn | −0.107 | −0.210 | 0.855 | 0.073 |
Ni | −0.090 | 0.865 | 0.087 | −0.202 |
Pb | 0.967 | −0.072 | −0.033 | 0.131 |
Zn | 0.166 | −0.313 | 0.160 | 0.817 |
特征值 | 2.45 | 2.19 | 2.26 | 1.43 |
方差解释率(%) | 22.3 | 19.9 | 20.6 | 13.0 |