Williams D E.Trace element accumulation,movement and distribution in the soil profile from massive application of sewage sludge [J].Soil Science,1980,145(2):119-129.
[3]
Hong J H,Pintauro P N.Desorption-complexation-dissolution characteristics of adsorbed cadmium from kaolin by chelators [J].Water,Air and Soil Pollution,1996,86:35-50.
Kari F G,Giger W.Speciation and fate of ethylenediametetaacetate (EDTA) in municipal wastewater treatment [J].Water Research,1996,30(1):122-134.
[9]
Irene M C L O,Yang X Y.EDTA extraction heavy metals from different soil fractions and synthetic soils [J].Water,Air and Soil Pollution,1999,109:219-236.
[10]
Papassiopi N,Tambouris S,Kontopoulos A.Removal of heavy metals from calcareous contaminated soils by EDTA leaching [J].Water,Air and Soil Pollution,1999,109:1-15.
Tessier A,Campbell P G,Blasson M.Sequential extraction procedure for the speciation of particulate trace metals [J].Anal Chem,1979,51(7):844-851.
[13]
Liao B H,Seip H M,Larssen T.Response of two Chinese forest soils to acidic inputs:leaching experiment [J].Geoderma,1997,75:53-73.
[14]
Hendershot W H,Duquette M.A simple barium chloride method for determining cation exchange capacity and exchangeable cations[J].Soil Sci Soc Am J,1986,50:605-608.
Barona A,Aranguiz I,Elias A.Metal associations in soils before and after EDTA extractive decontamination:implications for the effectiveness of further clean-up procedures [J].Environmental Pollution,2001,113:79-85.
