Sampling

Mn (µg/g)

Pb (µg/g)

Cd (µg/g)

As (µg/g)

points

February 2018

M1

2.19 ± 0.44

1.78 ± 0.52

1.22 ± 0.15

4.22 ± 0.32

M2

1.52 ± 0.21

2.28 ± 0.77

1.98 ± 0.04

3.22 ± 0.26

M3

4.28 ± 0.39

2.29 ± 0.52

1.87 ± 0.22

8.22 ± 0.38

M4

5.92 ± 0.49

5.43 ± 0.13

7.06 ± 0.18

11.22 ± 0.78

October 2018

M1

2.02 ± 0.56

0.91 ± 0.33

1.01 ± 0.14

3.60 ± 0.29

M2

1.24 ± 0.32

1.10 ± 0.61

1.20 ± 0.21

2.85 ± 0.22

M3

3.58± 0.79

1.24 ± 0.34

1.31 ± 0.17

7.34 ± 0.43

M4

5.22 ± 0.87

2.52 ± 0.45

6.86 ± 0.26

10.23 ± 0.7