Copper-toxicity to water and plankton in the river Ravi, Pakistan
2007
Rauf, A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Zoology and Fisheries) | Javed, M. (University of Agriculture, Faisalabad (Pakistan). Dept. of Zoology and Fisheries)
Copper (Cu) toxicity of water and plankton in the river Ravi stretch from Lahore siphon to Baloki head works, Pakistan and related effluent discharging tributaries has been studied. The effluents from tributaries had an adverse effect the planktonic biota of the river Ravi. Among nine tributaries, Taj Company nulla exhibited significantly higher contaminated plankton, due to uptake and accumulation of Cu from water. Maximum concentration of Cu (281.60 mug g-1) was recorded in Taj Company nulla, while it was minimum (9.80 mug g-1) in Lahore siphon Right Bank (R B). Average maximum and minimum value of Cu concentration in water samples were 5.33 and 0.10 mg L-1 at Farrukhabad nulla and Lahore siphons Left Bank (L B), respectively. The relationships between accumulation of Cu in plankton and the physico-chemistry of water were significant. Data revealed that plankton had a greater tendency to accumulate Cu than that retained in water.
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