Journal
ENVIRONMENTAL MONITORING AND ASSESSMENT
Volume 152, Issue 1-4, Pages 299-307Publisher
SPRINGER
DOI: 10.1007/s10661-008-0316-4
Keywords
Contaminated soil; Heavy metal; Hyperaccumulator; Phytoremediation; Weed species
Categories
Funding
- Hi-tech research and development program of China [2006AA06Z386]
- Sino-Russian Joint Research Center on Natural Resources and Eco-Environmental Sciences
Ask authors/readers for more resources
The screening of hyperaccumulators is still very much needed for phytoremediation. With properties such as strong tolerance to adverse environment, fast growing and highly reproductive rate, weed species may be an ideal plant for phytoremediation. The objectives of this study were to examine the tolerance and hyperaccumulative characteristics of 24 species in 9 families to Cd, Pb, Cu and Zn by using the outdoor pot-culture experiment. In the screening experiment, only Conyza canadensis and Rorippa globosa displayed Cd-hyperaccumulative characteristics. In a further concentration gradient experiment, C. canadensis was affirmed that it is not a Cd hyperaccumulator. Only R. globosa, indicated all Cd hyperaccumulative characteristics, especially Cd concentration in its stems and leaves were higher than 100 mg/kg, the minimum Cd concentration what a Cd-hyperaccumulator should accumulate. Thus, R. globosa was further validated as a Cd-hyperaccumulator.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available