Kinetics and Mechanisms of Soil Chemical Reactions

Authored by: Donald L. Sparks

Handbook of Soil Sciences Properties and Processes

Print publication date:  November  2011
Online publication date:  November  2011

Print ISBN: 9781439803059
eBook ISBN: 9781439803066
Adobe ISBN:


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Since its inception in the mid-1850s, soil chemistry has focused on the macroscopic, equilibrium aspects of soil chemical reactions (CRs) and processes. From these studies, much was learned about important soil chemical processes, including sorption, desorption, precipitation, complexation, dissolution, and oxidation/reduction. However, such investigations do not convey information on reaction rates or reaction mechanisms. In the past three decades, as concerns and interests about soil and water quality have increased, soil and environmental chemists, environmental and chemical engineers, and geochemists have increasingly realized that reactions in subsurface environments are time dependent. Thus, to accurately predict the fate, mobility, speciation, and bioavailability of environmentally important plant nutrients, trace elements, radionuclides, and organic chemicals in soils, one must understand the kinetics and mechanisms of the reactions.

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