On the Accumulating Characteristics of Nuclide Sr in Comnyzacanadensis (L.) Cronq, the Hyper-Accumulator Plant

Abstract:

Studying and screening nuclide hyper-accumulator plants and their planting methods for rapid and effective radioactive decontamination in the environment is the vital study content of the environmental radioactive pollution rehabilitation and control. Taking Comnyzacanadensis (L.) Cronq as experimental material, this study measures and analyzes the accumulating characteristics of nuclide Sr in Comnyzacanadensis (L.) Cronq by treating them with SrCl₂ of various concentrations and applying the technology of pot culture to imitate the natural environment polluted by radioactive nuclide Sr. The results show that as the concentration of SrCl2 increases, the accumulation of Sr in Comnyzacanadensis (L.) Cronq also increases; when the concentration of SrCl2 content reaches a maximum level of 200mg/Kg, the SrCl2 content of the above-ground part shows its highest level of 0.709mg/g DW, while the SrCl₂ content of foot end 0.201mg/g DW. The experiment results indicate that Comnyzacanadensis (L.) Cronq has the basic characteristics of Sr Hyper-accumulator, due to the fact that the accumulated amount of S in its above-ground part is larger than that of R in its foot end, i.e. S/R >1.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2229-2233
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2229
• Online since: August 2013
• Authors: Yu Zhang, Zong Ya Tao
• Keywords: Comnyzacanadensis (l.) Cronq, Hyper-Accumulator, Nuclide, SR

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