Cadmium uptake and toxicity to water hyacinth: Effect of repeated exposures under controlled conditions
- Tel-Aviv Univ., Ramat-Aviv (Israel)
Water hyacinth, Eichornia crassipes has drawn attention as a plant of rapid growth and high biomass production, and capable of removing pollutants from domestic and industrial waste effluents. Most of the studies were static assays of short duration (1 to 3 days) and with a single exposure of the plants to cadmium. The authors presumed that repeated exposures to Cd might change the rate of uptake of the metal as well as the growth and physiological state of the plant. This prompted us to undertake the present study in order to evaluate the potential capacity of water hyacinth to remove Cd from solution under conditions of repeated exposures but otherwise favorable growth conditions and without interference from other toxic compounds. Removal of metal from effluents by plants is expected to be compounded by the influence of specific conditions of the medium such as temperature, pH, ionic strength, presence of other metals or complexing ligands. The results of the present study will serve as a comparative reference for evaluating the effect of effluent conditions on CD toxicity to water hyacinth and the plant's capacity for metal removal.
- OSTI ID:
- 6701278
- Journal Information:
- Bulletin of Environmental Contamination and Toxicology; (USA), Journal Name: Bulletin of Environmental Contamination and Toxicology; (USA) Vol. 44:1; ISSN 0007-4861; ISSN BECTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AQUATIC ORGANISMS
AQUEOUS SOLUTIONS
CADMIUM COMPOUNDS
CHRONIC EXPOSURE
DISPERSIONS
GROWTH
LILIOPSIDA
MAGNOLIOPHYTA
MIXTURES
PH VALUE
PHYSIOLOGY
PLANT GROWTH
PLANTS
SOLUTIONS
TOXICITY
UPTAKE
WATER HYACINTHS