Bioaccumulation and Chemical Forms of Cadmium, Copper and Lead in Aquatic Plants
Brazilian Archives Of Biology And Technology
Bioaccumulation and Chemical Forms of Cadmium, Copper and Lead in Aquatic Plants
Autor Correspondente: JinZhao Hu | [email protected]
Palavras-chave: heavy metals, phytoextraction, macrophytes, sagittaria sagittifolia l, potamogeton crispus l
Resumos Cadastrados
Resumo Inglês:
The cadmium(Cd), copper(Cu) and lead(Pb) accumulation, as well as their relative content of different chemical
forms in Sagittaria sagittifolia L. and Potamogeton crispus L. were determined. The results showed that both the
plants had the ability to accumulate large amounts of Cd, Cu and Pb, and they absorbed metals in dose-dependent
manners. The roots of S. sagittifolia appeared more sensitive to Cd and Pb than the leaves of P. crispus. The
potential of Cu uptake by these two plant tissues was similar. Under the same concentration, the uptake of Cu for
both the plants was higher than Pb and Cd, while that of Pb was lowest. The Cd, Cu and Pb existed with various
forms in the plants. Cd and Pb were mainly in the NaCl extractable form in S. sagittifolia and P. crispus. The HAc
and ethanol extractable Cu were the main forms in the root, whereas the ethanol extractable form was the dominant
chemical form in the caulis and bulb of the S. sagittifolia L.
