Immobilization of hazardous elements As, Cd, Pb and Zn in soils by application of special natural amendments

acide humique adsorbant adsorbente adsorbents amendement calcique arsenic arsenico cadmio cadmium cinc czech republic dolomie dolomita dolomite enmiendas calizas farmland field experimentation heavy metals humic acids inorganic compounds laboratory experimentation land resources lead liming materials metales pesados organic compounds peat plantas plante plants plomb plomo pot experimentation procesos de transporte en el suelo recursos de la tierra soil chemicophysical properties soil transport processes soil types terre agricole tipos de suelos tourbe transport dans le sol turba type de sol zeolitas zeolite zeolites zinc