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Table 6 PERI and RI of heavy metals in Little Akaki River sediment

From: Little Akaki River sediment enrichment with heavy metals, pollution load and potential ecological risks in downstream, Central Ethiopia

Sample site code

The potential ecological risk factor of single metal (Eir)

RI of heavy metals

Zn

Cr

Cd

Pb

S1

0.87

0.05

416

14.36

431.28

S2

1.58

0.68

412

10.45

424.71

S3

1.76

9.80

304

7.73

323.29

S4

1.68

1.26

292

149.10

444.04

S5

1.79

1.16

209

15.29

227.24

S6

0.98

1.09

260

93.10

355.17

S7

0.83

0.81

244

7.78

253.42

S8

2.40

3.88

404

11.57

421.85

S9

2.48

0.13

300

10.83

313.44

S10

1.25

5.48

296

9.06

311.79

Average

1.56

2.43

313.70

32.93

350.62