Journal of Environmental Biology
pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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Abstract - Issue Apr Supplement 2007, 28 (2) Back
Influence of pH and water hardness upon nickel accumulation in edible fish Cirrhinus mrigala
S. Karthikeyan*1, PL. RM. Palaniappan2 and Selvi Sabhanayakam3
1Department of Physics,St.Joseph’s
2Department of Physics,
3Department of Zoology,
(Received: November 19, 2005 ; Revised received: May 15, 2006 ; Accepted: June 22, 2006)
Abstract: The freshwater fingerlings of Cirrhinus mrigala were exposed to Nickel in acidic medium pH = 6.0 (5.8 – 6.2), alkaline medium pH = 9.0 (8.8 – 9.2) and water hardness (40 mg/l) of CaCO3. The study indicates that nickel accumulation was significantly influenced by pH and hardness of water. The concentration was found to be significantly higher at pH = 9.0 than at pH = 6.0. Also the presence of hardness in water results in reduced toxicity of nickel.
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