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|Title:||Toxicity Of Zinc Smelter Wastes To Some Marine Diatoms|
|Authors:||Rao, M Umamaheswara|
|Abstract:||Bioassay experiments were conducted with 4 marine diatoms, Skeletonema costatum (Grev) Cleve, Melosira moniliformis (Muller) Ag, Stephanodiscus sp. and Navicula longa (Greg) Ralfs, to assess the toxicity of effluents and sediment residues collected from 2 discharge canals of the zinc smelter factory. Growth of diatoms was inhibited significantly in 0.01 to 0.5% conc. of effluents and residues tested and waste of canal-II was more toxic than that of canal-I. Growth stimulation was seen in M. moniliformis, Stephanodiscus sp. and N. longa exposed to 0.001 and 0.01% of effluents and residues, indicating the fertilizing effect of zinc smelter wastes at very low concentrations.|
|ISSN:||0975-1033 (Online); 0379-5136 (Print)|
|Appears in Collections:||IJMS Vol.19(3) [September 1990]|
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