Bioaccumulation and chemical forms of cadmium, copper and lead in aquatic plants

Brazilian Archives of Biology and Technology

Jinzhao Hu²  Aizhen Zheng²  Dongli Pei²  Guoxin Shi¹ 

[1],Shangqiu Normal University Department of Life Science Key Laboratory of Plant and Microorganism interactionShangqiu,China

关键词: heavy metals;    phytoextraction;    macrophytes;    Sagittaria sagittifolia L.;    Potamogeton crispus L.;   

DOI  :  10.1590/S1516-89132010000100029

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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