Table 7 Ecological assessment results.

Background value(\(C_{n}^{i}\))

0.07

9.20

23.70

52.9

17.60

70.6

Average (\(C_{s}^{{\text{i}}}\))

8.58

1560.6

193.35

200.67

263.26

848.32

Pollution parameters(\(C_{{\text{f}}}^{{\text{i}}}\))

0.60

14,357.52

4582.4

10,615.44

4633.38

59,891.39

Toxicity coefficient of heavy metals(\(T_{r}^{1}\))

30

10

5

2

5

1

Ecological hazard coefficient (\(E_{{\text{r}}}^{{\text{i}}}\))

18.02

143,575.2

22,911.98

21,230.89

23,166.88

59,891.39

Multiple heavy metals (RI )

270,794.351