Toxicity and bioaccumulation of cadmium and lead in Salvinia cucullata.
J Environ Biol
;
2006 Oct; 27(4): 645-52
Article
Dans Anglais
| IMSEAR
| ID: sea-113306
ABSTRACT
The toxicity and accumulation of heavy metals, cadmium (Cd) and lead (Pb) in aquatic fern, Salvinia cucullata were studied. Plants were cultured in Hoagland's medium which was supplemented with 0.5,1,2, and 4 mg/l of Cd and 5, 10, and 40 mg/l of Pb and were separately harvested after 2,4,6, and 8 days. The toxicity symptoms of Cd and Pb to S. cucullata showed chlorosis on leaves. There were significant derceases in the relative growth, biomass productivity and total chlorophyll content when the exposure time and concentration were increased. The accumulation study showed the significant increases of both metals when the exposure time and concentration were increased. The roots of S. cucullata had higher Cd and Pb contents than leaves suggesting that the metals were bound to the root cells and were partially transported to the leaves.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
Sujet Principal:
Polluants chimiques de l'eau
/
Transport biologique
/
Cadmium
/
Chlorophylle
/
Purification de l'eau
/
Racines de plante
/
Feuilles de plante
/
Biomasse
/
Fougères
/
Plomb
langue:
Anglais
Texte intégral:
J Environ Biol
Année:
2006
Type:
Article
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