corrected lime potential
Defined as pH - 1/2p(Ca + Mg) - 1/3(pKg - pY) where Kg is the
solubility product of gibbsite and Y is the value of the ionic
product (Al)(OH)3 in the soil solution. The corrected lime
potential (CLP) is also equal to 1/6 log [(Ca +
Mg)(OH)2]3/[(Al)(OH)3]2 + KCLP, where KCLP is a constant dependent
on temperature only. The CLP is therefore the ratio of the cube of
the sum of the activities of Ca and Mg hydroxide to the square of
the activity of Al hydroxide in the soil solution. The CLP has a
relationship to the degree of base saturation based on the
effective cation exchange capacity, but the pH and the lime
potential do not.
See also lime potential.
potentiel de chaux corrigé Source:
Contact: Peter Schut