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Use of Kinetics for the Study of Exchange Reactions in Soils
Author(s) -
Harter Robert D.,
Lehmann Robert G.
Publication year - 1983
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1983.03615995004700040012x
Subject(s) - ion exchange , kinetic energy , chemistry , kinetics , ion , soil water , chemical kinetics , charge exchange , reaction rate , inorganic chemistry , catalysis , soil science , environmental science , organic chemistry , physics , quantum mechanics
Since exchange reactions are exceedingly rapid and soil phases must be separated for analysis, kinetic methods are difficult to use for their characterization. However, these methods can be used to identify the extent and contribution of exchange reactions to the retention of adsorbate ions. The difference between theoretical start concentration and the intercept of a log‐normal plot of a kinetic reaction indicates the magnitude of the initial reaction(s), and a charge balance between ions lost from solution and exchange ions gained by solution will confirm whether the reaction is partly or entirely exchange. Using different initial concentrations, it is possible to construct isotherms for the exchange reaction.