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. 2023 Sep 19;9(9):e20299. doi: 10.1016/j.heliyon.2023.e20299

Table 5.

Heavy metals concentration μg/kg in sludge sample of HIE, Peshawar.

Sampling sites Cd μg/kg Cr μg/kg Pb μg/kg Zn μg/kg
1 1006 622 2788 3337
2 1101 2974 1132 2015
3 55 2101 4901 2029
4 1013 4120 1392 1621
Control 27 1045 168 1084
USEPA, (2018) [39] 39000 μg/kg 1200000 μg/kg 300000 μg/kg 2800000 μg/kg