Research Article

Bioaccumulation of Heavy Metals in Water, Sediments, and Tissues and Their Histopathological Effects on Anodonta cygnea (Linea, 1876) in Kabul River, Khyber Pakhtunkhwa, Pakistan

Table 3

Mean concentration of metals (g/l) in water from Michini Bridge below Warsak Dam (reference site/site 1), Sardaryab, Amangarh, and Pir Sabaq (polluted sites 2, 3, and 4) of River Kabul receiving industrial effluents and city sewages and permissible limits of these metals according to NEQS.

Metals (µg/l) Site 1Site 2Site 3Site 4 NEQS (µg/L)

Cd7.0 ± 4.0100
Cr36.3 ± 4.91000
Cu24.3 ± 9.01000
Fe25.0 ± 5.08000
Ni68.0 ± 2.671.0 ± 1.076.0 ± 1.01000
Pb32.0 ± 6.0500
Mn29.0 ± 5.01500
Zn104.3 ± 4.0500

Data is shown as Mean ± SD. NEQS, National Environmental Quality Standards. Difference is significant relative to site 1 at and .