Removal of trace metals from contaminated soils using EDTA incorporating resin trapping techniques

anion aniones anions cadmio cadmium canada chelating agents cinc cobre contaminantes contaminants copper cuivre edta extraction ion exchange leachates lead lessivat lixiviados metal metales metals methode methods oligoelementos plomb plomo polluant pollutants quebec quelatos reclamation resinas resine resins soil types tipos de suelos trace elements type de sol urban areas zinc zonas urbanas zone urbaine