Table 4 Correlation relationship between the heavy metal
| Â | Cd | Cr | Cu | Fe | Pb | Mn | Ni | Zn |
|---|---|---|---|---|---|---|---|---|
Cd | 1 | Â | Â | Â | Â | Â | Â | Â |
Cr | 0.193 | 1 | Â | Â | Â | Â | Â | Â |
Cu | -0.002 | -0.376 | 1 | Â | Â | Â | Â | Â |
Fe | -0.634 | -0.034 | 0.003 | 1 | Â | Â | Â | Â |
Pb | -0.126 | -0.085 | -0.536 | 0.279 | 1 | Â | Â | Â |
Mn | 0.228 | 0.059 | -0.419 | -0.312 | -0.372 | 1 | Â | Â |
Ni | 0.7 | -0.029 | 0.358 | -0.172 | -0.069 | -0.083 | 1 | Â |
Zn | 0.11 | -0.338 | 0.332 | 0.392 | -0.096 | 0.114 | 0.488 | 1 |