Table 8.
Descriptive statistics of the crop pollution index (CPI) (mg/kg, N = 1822).
| Item | Cr | Pb | Cd | Hg | As | Cu | Zn | Ni |
|---|---|---|---|---|---|---|---|---|
| Mean | 0.483 | 0.105 | 0.314 | 0.118 | 0.232 | 0.187 | 0.335 | 1.007 |
| Median | 0.260 | 0.077 | 0.235 | 0.073 | 0.070 | 0.190 | 0.380 | 0.700 |
| Std | 0.746 | 0.167 | 0.337 | 0.128 | 0.587 | 0.149 | 0.277 | 1.119 |
| Min | 0.000 | 0.000 | 0.000 | 0.004 | 0.001 | 0.001 | 0.003 | 0.006 |
| Max | 13.000 | 3.250 | 5.500 | 1.43 | 9.714 | 2.100 | 5.800 | 13.500 |
| CV (%) | 154.50 | 158.76 | 107.56 | 108.20 | 252.68 | 79.95 | 82.62 | 111.15 |
| Number of polluted samples | 206 | 8 | 59 | 2 | 104 | 1 | 12 | 692 |
| Percent of polluted samples | 11.30 | 0.44 | 3.24 | 0.11 | 5.70 | 0.05 | 0.66 | 37.96 |