Toxicity and bioaccumulation of cadmium and lead in Salvinia cucullata.
J Environ Biol
;
2006 Oct; 27(4): 645-52
Artigo
em Inglês
| 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.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Poluentes Químicos da Água
/
Transporte Biológico
/
Cádmio
/
Clorofila
/
Purificação da Água
/
Raízes de Plantas
/
Folhas de Planta
/
Biomassa
/
Gleiquênias
/
Chumbo
Idioma:
Inglês
Revista:
J Environ Biol
Ano de publicação:
2006
Tipo de documento:
Artigo
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