Table 1 PI and potential RI for each heavy metal of the soil in different regions of Jiangmen city.
Study area/PI | As | Cd | Cr | Cu | Hg | Ni | Pb | Zn | Pn | Risk grade | RI | Risk grade |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jianghai District | 1.2 | 10.6 | 7.1 | 2.3 | 1.9 | 1.4 | 2.4 | 1.3 | 11.6 | Severely polluted | 453.3 | Considerable |
Pengjiang District | 1.7 | 5.2 | 0.7 | 1.8 | 3.8 | 0.7 | 2.4 | 2.2 | 5.2 | Severely polluted | 351.0 | Considerable |
Xinhui District | 1.2 | 3.7 | 0.9 | 1.8 | 2.6 | 0.7 | 2.5 | 1.1 | 4.1 | Severely polluted | 257.7 | Moderate |
Taishan City | 1.3 | 2.1 | 0.5 | 0.8 | 1.6 | 0.4 | 1.6 | 0.7 | 2.4 | Moderately polluted | 156.0 | Moderate |
Kaiping City | 0.9 | 1.6 | 0.6 | 1.4 | 1.1 | 0.4 | 1.4 | 0.8 | 2.2 | Moderately polluted | 121.2 | Low |
Enping City | 0.8 | 2.1 | 0.6 | 0.7 | 0.8 | 0.3 | 1.7 | 0.5 | 1.9 | Slightly polluted | 119.8 | Low |
Heshan City | 1.1 | 1.8 | 0.6 | 1.1 | 0.6 | 0.5 | 2.6 | 0.8 | 2.3 | Moderately polluted | 113.4 | Low |
