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Title: Toxicity Of Zinc Smelter Wastes To Some Marine Diatoms
Authors: Rao, M Umamaheswara
Mohanchand, V
Issue Date: Sep-1990
Publisher: NISCAIR-CSIR, India
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.
Page(s): 181-186
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.19(3) [September 1990]

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