Sample

CF

CD

Eri

RI

Cr

Co

Cu

Zn

As

Cd

Pb

Hg

Cr

Co

Cu

Zn

As

Cd

Pb

Hg

Sol1

0.1

0.1

12.1

10.5

1.9

11.2

13.8

26.8

77

0.2

0.5

60.5

10.5

19

336

69

1072

1568

Sol2

0.5

0.2

11.3

8.5

2.5

12.2

13.5

5.4

54

1

1

56.5

8.5

25

366

67.5

216

742

Sed1

0.2

0.1

7.3

10.6

2.1

13.3

7.6

1.8

43

0.4

0.5

36.5

10.6

21

399

38

72

578

Sed2

0.2

0.1

7.5

11.3

1.9

8.2

13.6

16.1

59

0.4

0.5

37.5

11.3

19

246

68

644

1027

Sed 3

0.3

0.1

8.3

11

2.2

15.3

10.1

3.6

51

0.6

0.5

41.5

11

22

459

50.5

144

729

Sed 4

0.3

0.1

0.9

12.8

2.1

12.2

15.5

5.4

49

0.6

0.5

4.5

12.8

21

366

77.5

216

699

Sed 5

0.2

0.1

0.6

1.6

2

10.2

2.5

12.5

30

0.4

0.5

3

1.6

20

306

12.5

500

844

CF classification

Eri classification

CF<1

Low contamination

Eri < 40

Low ecological risk

1 < CF < 3

Moderate contamination

40 < Eri < 80

Moderate ecological risk

3 < CF < 6

Considerable contamination

80 < Eri < 160

Considerable ecological risk

6 < CF

Very high contamination

160 < Eri < 320

High ecological risk

Eri > 320

Very high ecological risk

RI classification

RI < 150

Low ecological risk or low ecological pollution level

150 ≤ RI < 300

Moderate ecological risk or Moderate ecological pollution level

300 ≤ RI < 600

Considerable ecological risk or severe ecological pollution level

RI > 600

Very high ecological risk or serious ecological pollution level

CD classification

8 ≤ CD < 16

Moderate contamination

16 ≤ CD < 32

High contamination

32 ≤ CD

Very high contamination