The use of water lettuce (Pistia stratiotes L.) for rhizofiltration of a highly polluted solution by cadmium and lead
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Araceae chemistry drug effects metabolism MeSH
- Time Factors MeSH
- Water Pollutants, Chemical metabolism MeSH
- Chlorophyll metabolism MeSH
- Water Purification methods MeSH
- Cadmium metabolism pharmacology MeSH
- Ferns chemistry drug effects metabolism MeSH
- Plant Roots chemistry metabolism MeSH
- Plant Leaves chemistry metabolism MeSH
- Lead metabolism pharmacology MeSH
- Solutions MeSH
- Plant Transpiration drug effects MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Water Pollutants, Chemical MeSH
- Chlorophyll MeSH
- Cadmium MeSH
- Lead MeSH
- Solutions MeSH
The effectiveness of heavy metal uptake from contaminated nutrient solution by four aquatic macrophytes (Pistia stratiotes L., Salvinia auriculata AubL, Salvinia minima Baker, and Azolla filiculoides Lam) was estimated in this study. The influence of cadmium (3.5 mg L(-1) and 10.5 mg L(-1)) and lead (25 mg L(-1) and 125 mg L(-1)) on the stress symptoms was observed through the determination of chlorophyll content and transpiration rate over 14 days of the experiment. The results of the present study showed extreme reductions in Cd and Pb concentrations in solution during the first 4 days. The accumulation of Pb in plant tissues was the highest during the first 4 days and was more than 10 times higher in the roots (42,862 mg kg(-1)) than in the leaves (3867 mg kg(-1)). The accumulation of Cd slowly increased and was the highest at the end of the experiment. Concentrations in roots (3923 mg kg(-1)) were roughly 6 times higher than in the leaves (624 mg kg(-1)). Results showed significant decrease in the transpiration rate at Pb treatment and a significant increase at Cd treatment during 48 hours of exposition.
References provided by Crossref.org
