Table 6 Distribution of potential ecological risk index (Er) of PTEs.
From: Innovative isotopic modeling and risk assessment of PTEs and PAHs in urban soils
PTEs | Er | ||||
|---|---|---|---|---|---|
Min | Max | Mean | STDEV | Skewness | |
Zn | 2.39 | 8.71 | 4.05 | 1.33 | 1.93 |
Cu | 5.86 | 41.38 | 9.8 | 5.19 | 4.7 |
Ni | 9.25 | 19.5 | 14.05 | 2.31 | 0.14 |
Pb | 1.67 | 42.67 | 9.01 | 6.77 | 2.66 |
Cr | 4.11 | 7.89 | 6.37 | 0.94 | −0.56 |
Cd | 63.33 | 533.33 | 91.32 | 63.41 | 7.24 |
As | 5.42 | 79.17 | 9.62 | 10.12 | 6.48 |
