Research Article
Spatial Variations and Potential Risks of Heavy Metals in Seawater, Sediments, and Living Organisms in Jiuzhen Bay, China
Table 1
Degrees of potential risks corresponding to various values of the potential risk index (Eri) and total potential ecological risk index (RI).
| | Range of potential ecological risk index of a single heavy metal | Range of total potential comprehensive ecological risk index RI | Degree of potential ecological risk |
| | < 40 | RI < 150 | Low potential ecological risk |
| | 40 ≤ < 80 | 150 ≤ RI < 300 | Moderate potential ecological risk |
| | 80 ≤ <160 | 300 < RI < 600 | Relatively severe potential ecological risk |
| | 160 ≤ < 20 | RI ≥ 600 | Severe potential ecological risk |
| | Eri ≥ 320 | — | Very heavy potential ecological risk |
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