Sl. No.

Sample reference

Cd

Cu

Fe

Ni

Pb

Zn

1

Urban wastewater (mg/L)

BDL

0.04

1.36

0.39

0.04

0.67

2

Biosolids (mg/Kg)

BDL

BDL

17.1

0.32

0.10

0.98

3

Soil (mg/Kg)

BDL

113.9

919.2

103.7

9.58

138.9