Effect of humic acids on mercury toxicity to marine algae

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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.

Author(s): 
Kaladharan, P
Leelabhai, K S
Keywords: 
Humic acid
Mercury toxicity
Marine algae
Seaweeds
Abetting agent
Link / Ref: 
http://eprints.cmfri.org.in/7344/
Attachment: 
PDF icon Effect of humic acids on mercury toxicity to marine algae.pdf
Article Source: 
Kaladharan, P and Leelabhai, K S (2007) Effect of humic acids on mercury toxicity to marine algae. Fishery Technology, 44 (1). pp. 93-98.
Category: 
Basic Biology
Uses of Seaweeds: Chemicals