• Spectroscopy and Spectral Analysis
  • Vol. 29, Issue 9, 2565 (2009)
HAN Wen-xuan*, XU Yi-ming, DU Wei, TANG Ao-han, and JIANG Rong-feng
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  • [in Chinese]
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    DOI: Cite this Article
    HAN Wen-xuan, XU Yi-ming, DU Wei, TANG Ao-han, JIANG Rong-feng. Stoichiometry of Multi-Elements in the Zinc-Cadmium Hyperaccumulator Thlaspi Caerulescens Grown Hydroponically under Different Zinc Concentrations Determined by ICP-AES[J]. Spectroscopy and Spectral Analysis, 2009, 29(9): 2565 Copy Citation Text show less

    Abstract

    Thlaspi caerulescens is commonly known as a zinc (Zn) and cadmium (Cd) hyperaccumulator, which can be used to clean up the Zn- and/or Cd-contaminated soil. However, it is unclear whether high soil Zn concentrations will stimulate undue accumulations of other elements to such an extent as to cause the nutrient unbalance in the soil. To address this question, the inductively coupled plasma-atomic emission spectrometry (ICP-AES) was employed to investigate the effect of Zn on the stoichiometry of Zn, Cd, K, P, Mg, Ca, Fe, Mn and Cu in T. caerulescens (Ganges ecotype) exposed to low, middle and high Zn concentrations (5, 50 and 500 μmol·L-1, respectively) in a hydroponic experiment. The results showed that there were no significant variations in contents of Cd, K, P, Mg, Ca, Fe, Mn and Cu in the shoot of T. caerulescens, however, the Zn content in the shoot and root with 500 μmol·L-1 Zn treatment increased as much as 13 times higher than that with low Zn exposure, indicating that the plant is capable of Zn hyperaccumulating. The authors’ study suggests that it is improbable to induce soil nutrient unbalance when T. caerulescensis (Ganges) is used for phytoremediation of Zn-contaminated soil, in that over-uptake of nutrient elements from the soil other than Zn was not observed, at least for the elements K, P, Mg, Ca, Fe, Mn and Cu.
    HAN Wen-xuan, XU Yi-ming, DU Wei, TANG Ao-han, JIANG Rong-feng. Stoichiometry of Multi-Elements in the Zinc-Cadmium Hyperaccumulator Thlaspi Caerulescens Grown Hydroponically under Different Zinc Concentrations Determined by ICP-AES[J]. Spectroscopy and Spectral Analysis, 2009, 29(9): 2565
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