Table 7 Single factor pollution index of heavy metals in groundwater in the research area.
Max | Min | Average value | No pollution | Slightly pollution | Lightly pollution | Moderately polluted | Seriously pollution | |
|---|---|---|---|---|---|---|---|---|
As | 0.518 | 0.009 | 0.117 | 100 | 0 | 0 | 0 | 0 |
Cd | 0.0622 | 0 | 0.043 | 100 | 0 | 0 | 0 | 0 |
Al | 1.53 | 0.011 | 0.227 | 97.92 | 2.08 | 0 | 0 | 0 |
Mn | 0.575 | 0.0007 | 0.064 | 100 | 0 | 0 | 0 | 0 |
Hg | 7.046 | 0 | 0.369 | 91.67 | 2.08 | 2.08 | 2.08 | 2.08 |
Co | 0.0143 | 0 | 0.0019 | 100 | 0 | 0 | 0 | |
Cu | 0.0031 | 0 | 0.0006 | 100 | 0 | 0 | 0 | |
Pb | 0.1224 | 0 | 0.0174 | 100 | 0 | 0 | 0 | |
Zn | 0.0041 | 0 | 0.0005 | 100 | 0 | 0 | 0 | |
Ni | 0.0558 | 0 | 0.0085 | 100 | 0 | 0 | 0 |
