Record number :
730579
Title of article :
Field evaluation of Cd and Zn phytoextraction potential by the hyperaccumulators Thlaspi caerulescens and Arabidopsis halleri
Author/Authors :
& S.P. McGrath، نويسنده , , E. Lombi، نويسنده , , C.W. Gray، نويسنده , , N. Caille، نويسنده , , S.J. Dunham، نويسنده , , F.J. Zhao، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
11
From page :
115
To page :
125
Abstract :
Field trials were undertaken to investigate the effect of the application of metal mobilizing agents, different sowing strategies and length of growing season on the extraction of Cd and Zn from soils by Thlaspi caerulescens and Arabidopsis halleri. None of the mobilizing agents used enhanced metal accumulation by T. caerulescens. Between 1998 and 2000, on average across plots where Cd or Zn exceeded allowable limits, T. caerulescens removed 1.3 and 0.3% of the total soil Cd and Zn. In one season when T. caerulescens was grown for 14 months, 21.7 and 4.4% of the total soil Cd and Zn was removed. This was larger than values found when T. caerulescens was grown for 4 months. A. halleri accumulated similar concentrations of Zn, but lower Cd concentrations than T. caerulescens. The results indicate that metal phytoextraction using T. caerulescens can be used to clean up soils moderately contaminated by Cd.
Keywords :
phytoextraction , chelating agents , Thlaspi caerulescens , Arabidopsis halleri , Cadmium , zinc
Journal title :
ENVIRONMENTAL POLLUTION
Link To Document :