STUDIES ON SOIL COPPER I. THE FRACTIONATION OF COPPER IN SOILS

摘要: Summary A method for fractionating soil copper was developed and applied to 24 soils representing a range of British types. The scheme distinguishes five fractions: (a)  soil solution exchangeable copper; (b)  copper weakly bound specific sites; (c)  organically copper; (d)  copper occluded by oxide material; and (e)  residual mainly in clay lattice structures. Correlation regression analyses confirmed the general validity indicated an association between free manganese oxides which considerably influences distribution main constituents. It is suggested that concentration controlled equilibria involving specifically adsorbed bulk the‘available’soil reserves reside organically fraction.