2Huang J W, Chen J J, William R B, et al. Phytoremediation of lead contaminated soils: Role of synthetic chelates is lead phytoextraction.Environ. Sei. Technol., 1997, 31: 800- 805
3Deram A, Petit D, Robinson B, et al. Natural and induced heavymetal accumulation by Arrhenatherum elatius : Implications for hytoremediation. Commun. Soil Sci. Plant Anal. , 2000, 31 : 413 - 421
5Lai H Y, Chen Z S. Effects of EDTA on solubility of cadmiumzinc, and lead and their uptake by rainbow pink and vetiver grass.Chemosphere, 2004, 55: 421- 430
6Ni C Y, Shi J Y, Luo Y M, et al. Co-cuhure engineering for enhanced phytorcmediation of metal contaminated soils. Pedosphere,2004, 14(4) :475- 482
7Romkens P, Bouwam L, Japenga J, et al. Potentials and drawbacks of chelate-enhanced phytoremediation of soils. Environ. Pollu.,2002, 116: 109- 121
8Kedziorek M A M, Dupuy A, Bourg A C M, et al. Leaching of Cd and Pb from a polluted soil during the percolation of EDTA : Laboratory column experiments modeled with a non-equilibrium solubilization step. Environ. Sci. Technol., 1998, 32:1 609 - 1 614
9Probstein R F, Hicks R E. Removal of contaminants from soils by electric fields. Science, 1993, 260:498-503
10Zhou D M, Deng C F, Cang L. Electrokinetic remediation of a Cu contaminated red soil by conditioning catholyte pH with different enhancing chemical reagents. Chemosphere, 2004, 56:265 - 273