Effect of humic acids on mercury toxicity to marine algae

Kaladharan, P and Leelabhai, K S (2007) Effect of humic acids on mercury toxicity to marine algae. Fishery Technology, 44 (1). pp. 93-98.

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Abstract

Humic acids extracted from the sediment of Cochin inshore areas exhibited impairment of mercury toxicity to marine algae maintained in Walne's medium under laboratory conditions. Cultures of marine micro alga /50chrysis galbana contaminated with sublethal concentration of 10 ppb of inorganic mercury and 10 ppm humic acids registered 18%, 21 % and 37% increase in oxygen production for two, four and six hours incubation in light respectively, when compared to the controls. Similarly the daily growth rate of seaweed Ulva lactuca registered 26% increase over the control when the seaweed was maintained in medium containing 30 ppb Hg and 30 ppm humic acids.

Item Type:Article
Uncontrolled Keywords:humic acid; mercury toxicity; marine algae
Subjects:Marine Environment > Marine Pollution
Biochemistry > Biochemical composition
Algae
Algae > Seaweed
Divisions:CMFRI-Cochin > Fishery Environment
ID Code:7344
Deposited By:Arun Surendran
Deposited On:08 Feb 2011 14:57
Last Modified:12 Jul 2011 15:52

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