Effect of Calcium Hardness on Toxicity and Accumulation of Water-borne Lead, Cadmium and Chromium to Labeo rohita (Hamilton)

Article type: Research Article

Authors: Adhikari, S. | Ghosh, L. | Ayyappan, S.

Affiliations: Central Institute of Freshwater Aquaculture P.O. Kausalyaganga, Bhubaneswar – 751 002, India

Note: [] Corresponding author. E-mail: [email protected]

Abstract: Effect of calcium hardness (120, 250, 350 and 750 mg/L) on the toxicity and accumulation of lead, cadmium and chromium to Labeo rohita (Hamilton) was investigated in the laboratory. For lead treatment, no mortality occurred, whereas 50% and 20% mortality occurred at 120 and 250 mg/L calcium hardness, respectively for cadmium treatment. In chromium treatment, 10% mortality was recorded at 120 mg/L calcium hardness. The minimum accumulation of Pb, Cd and Cr in whole fish occurred at 350 mg/L hardness as compared to other treatments.

Keywords: Lead, cadmium, chromium, Labeo rohita, accumulation, calcium hardness

Journal: Asian Journal of Water, Environment and Pollution, vol. 4, no. 2, pp. 103-106, 2007