| Parameter | Cd | Cr | Cu | Fe | Mn | Ni | Pb | Zn |
| Cd | 1.000 |
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| Cr | 0.887* | 1.000 |
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| Cu | 0.850 | 0.629 | 1.000 |
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| Fe | 0.843 | 0.728 | 0.950* | 1.0000 |
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| Mn | 0.817 | 0.858 | 0.714 | 0.686 | 1.000 |
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| Ni | −0.169 | −0.202 | −0.271 | −0.506 | 0.165 | 1.000 |
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| Pb | 0.621 | 0.842 | 0.499 | 0.576 | 0.912* | 0.029 | 1.000 |
|
| Zn | 0.936* | 0.797 | 0.935* | 0.876 | 0.901* | −0.043 | 0.696 | 1.000 |