אסיף מאגר המחקר החקלאי

Charge density and Na-K-Ca exchange on smectites.

Year:

1987

Source of publication :

Authors :

Volume :

35

Co-Authors:

Shainberg, I., Inst. of Soils & Water, Agricultural Research Organization, The Volcani Centre, P.O.B. 6, Bet Dagen 50-250, Israel.
Alperovitch, N.I., Inst. of Soils & Water, Agricultural Research Organization, The Volcani Centre, P.O.B. 6, Bet Dagen 50-250, Israel.
Keren, R., Inst. of Soils & Water, Agricultural Research Organization, The Volcani Centre, P.O.B. 6, Bet Dagen 50-250, Israel.

Facilitators :

Link :

Abstract:

The affinity of the clays for K increased with a decrease in the fraction of K in the exchange phase. The selectivity coefficients of the smectites for K increased with an increase in charge density. Equilibrium between the low hydration energy of adsorbed K and the electrostatic attraction energies between the platelets is postulated to explain the results.-R.E.S.

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