EN
Model studies were conducted upon the course and the range of sorption-desorption processes of Cu²⁺, Co²⁺, and Cr³⁺ while saturating the three mineral soils with them, and also durning leaching with water, and CaCL in the forced flow conditions. Sorption of heavy metal cations was depended upon the soils surface area. Leaching of heavy metals, previously sorbed, with a calcium cation showed a variable value of their desorption, depending on the texture of soil.