Sample

Sc

Cr

Co

Ni

Cu

Zn

As

Se

Cd

Sn

Sb

Pb

Hg

From

Water

1.26E−03

9.00E−05

3.80E−03

6.12E−03

3.40E−04

3.00E−05

2.70E−04

Ngweme et al. 2020

Sol 1

0.1

3.8

0.6

0

303.7

742.8

2.8

0.4

1.1

0.2

0.5

276.1

1.5

This work

Sol 2

2.3

17.3

1.8

1.6

281.5

602.4

3.7

5.2

1.2

0.1

0.1

270.0

0.3

Sed1

1.1

8.4

1.1

0.9

182.8

749.8

3.1

1

1.3

0.2

0.1

151.1

0.1

Sed2

0.7

7.2

1.1

0.5

188.3

804

2.9

1.5

0.8

0.2

0.2

272.9

0.9

Sed 3

1.5

10.7

1.3

1.2

208.6

780.6

3.3

1.9

1.5

0.2

0.1

201.7

0.2

Sed 4

0.8

9.9

1.4

1.1

23.5

910.6

3.1

1.1

1.2

0.2

0.2

309.9

0.3

Sed 5

0.6

6.3

0.8

0

15.5

114.2

3

1.1

1

0.2

0.2

49.1

0.7

Mean Sed

0.94

8.5

1.14

0.74

123.74

671.84

3.08

1.32

1.16

0.2

0.16

196.94

0.44

SD Sed

0.36

1.83

0.23

0.49

95.68

317.55

0.15

0.38

0.27

0.00

0.05

103.09

0.34

% SD Sed

39

21

20

67

77

47

4.8

28

23

0

34

52

78

Biota samples

Fish

0

0.3

0.1

0

1.2

28.6

1

1.5

0.3

0.2

0

0.6

Earth-worm

2.2

20.5

2.3

4.8

36.5

591

4.7

8.1

2.6

2.9

0.1

1.7

FAO^b

30

30

0.5

0.5

EU^c

0.1

0.2

Kd

6.75E+03

1.27E+04

3.26E+04

1.10E+05

9.06E+03

3.87E+04

7.29E+05

This work

Kd (IAEA)

4.3E+04

IAEA, 2010

BCF

238

1111

316

4673

2941

10000

2222

This work

BCF IAEA)

40

76

230

3400

330

25

IAEA, 2010