Metal

Mean heavy metal concentrations (µg/g) at determined sampling distances from the sanitary pits

F test,

p value

[12] Permissible limits

3 m

6 m

10 m

Pb

0.13 ± 0.01

0.06 ± 0.02

0.03 ± 0.01

0.01

0.05

Cd

0.05 ± 0.01

0.03 ± 0.01

0.02 ± 0.00

0.02

0.03

Cu

1.71 ± 0.21

1.02 ± 0.10

0.46 ± 0.14

0.01

2

Zn

7.03 ± 0.29

4.02 ± 0.51

1.63 ± 0.30

0.01

10