Surface complexation model of cation adsorption on humic soils: 1. K+and ca2+adsorption

Osamu Nakahara, Shin Ichiro Wada

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We constructed a new surface complexation model designated as “multi-layer model” that describes the cation adsorption on humic soils. This model is different from the existing surface complexation models in three ways: (1) we assumed the existence of a cylindrical surface, instead of a planar surface, as a model of humic polymers, (2) we ignored the diffuse ion swarm formation and assumed that all the adsorbed ions are held by the formation of outer-sphere surface complexes, and (3) we assumed that different ions are adsorbed on different planes. The applicability of the model to describe the experimental data on acid-base properties of a humic soil was satisfactory.

Original languageEnglish
Pages (from-to)659-669
Number of pages11
JournalSoil Science and Plant Nutrition
Issue number4
Publication statusPublished - Dec 1995

All Science Journal Classification (ASJC) codes

  • Soil Science
  • Plant Science

Fingerprint Dive into the research topics of 'Surface complexation model of cation adsorption on humic soils: 1. K<sup>+</sup>and ca<sup>2+</sup>adsorption'. Together they form a unique fingerprint.

Cite this