Phytoaccumulation and Phytotoxicity of Cadmium and Chromium in DuckweedWolffia globosa

Autor: E. Suchart Upatham, Prayad Pokethitiyook, Benjaporn Boonyapookana, Maleeya Kruatrachue, Sombat Singhakaew
Rok vydání: 2002
Předmět:
Zdroj: International Journal of Phytoremediation. 4:87-100
ISSN: 1549-7879
1522-6514
DOI: 10.1080/15226510208500075
Popis: The phytoaccumulation and phytotoxicity of heavy metals, cadmium (Cd), and chromium (Cr) on a common duckweed, Wolffia globosa, were studied. W. globosa were cultured in 3% Hoagland's nutrient medium, which was supplemented with 1, 2, 4, and 8 mg/L of Cd and Cr and were separately harvested after 3, 6, 9, and 12 days. The accumulation of Cd and Cr in W. globosa showed significant increases when the exposure time and metal concentration were increased. The effects of Cd and Cr on the biomass productivity and total chlorophyll content in W. globosa indicated that there were significant decreases in the biomass productivity and total chlorophyll content when the exposure time and metal concentration were increased.
Databáze: OpenAIRE
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