Bioaccumulation of nickel by algae
Six strains of algae and one Euglena sp. were tested for their ability to bioaccumulate nickel. Radioactive /sup 63/Ni was used together with a microplate technique to determine the conditions for nickel removal by axenic cultures of cyanobacteria, green algae, and one euglenoid. The cyanobacteria tested were found to be more sensitive to nickel toxicity than the green algae or the Euglena sp. The concentration factor (CF) for nickel was determined under a variety of conditions and found to be in the range from 0 to 3.0 x 10/sup 3/. The effect of environmental variables on nickel uptake was examined, and a striking pH effect for biaccumulation was observed, with most of the algal strains accumulating nickel optimally at approximately pH 8.0. Competition experiments for binding sites between nickel and other cations as well as with other complexing anions, showed that /sup 63/Ni uptake was affected only by cobalt and by humic acids.
- Research Organization:
- Univ. of Minnesota, Navarre
- OSTI ID:
- 7099363
- Journal Information:
- Environ. Sci. Technol.; (United States), Vol. 18:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALGAE
SENSITIVITY
NICKEL 63
BIOLOGICAL ACCUMULATION
BIOLOGICAL EFFECTS
REMOVAL
TOXICITY
PH VALUE
LABELLING
TRACER TECHNIQUES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
NICKEL ISOTOPES
NUCLEI
PLANTS
RADIOISOTOPES
YEARS LIVING RADIOISOTOPES
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)