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Exchangeable Cations
Abstract
Exchangeable cations are those that can be exchanged by a cation of an added salt solution. This chapter discusses exchange of the basic cations Ca2+, Mg2+, K+, and Na+ and exchangeable acidity, primarily arising from the cations AI3+and H+. In the absence of excess CaCO3, the cations Ca2+, Mg2+, and Na+ appear to be exchangeable by NH4OAc except in certain soils containing trioctahedral vermiculites. Exchangeable acidity is an arbitrary quantity composed of four types of acidity. The first is the H ions obtained from the hydrolysis of exchangeable, trivalent AI. The second is from hydrolysis of partially hydrolyzed and nonexchangeable AI. The third type is from weakly acidic groups on organic matter, and the fourth is exchangeable H. A number of workers have used the pH 7 methods of Schollenberger and Simon wherein the exchange capacity is determined by the NH4+ retained from NH4OAc, the total exchangeable bases are determined in the NH4OAc leachate.
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Citations
Cites
DETERMINATION OF EXCHANGE CAPACITY AND EXCHANGEABLE BASES IN SOIL—AMMONIUM ACETATE METHOD
SCHOLLENBERGER, C. J., & SIMON, R. H. (1945) · Soil Science · doi:10.1097/00010694-194501000-00004 · Cited by 824
Cited by
Lithium, Sodium, Potassium, Rubidium, and Cesium
Helmke, P. A., & Sparks, D. L. (1996) · SSSA Book Series · doi:10.2136/sssabookser5.3.c19 · Cited by 599
Degradation processes and nutrient constraints in sodic soils
Qadir, M., & Schubert, S. (2002) · Land Degradation & Development · doi:10.1002/ldr.504 · Cited by 489
Iron (Hydr)Oxide Crystallinity Effects on Soil Aggregation
Duiker, S. W., Rhoton, F. E., Torrent, J., Smeck, N. E., & Lal, R. (2003) · Soil Science Society of America Journal · doi:10.2136/sssaj2003.0606 · Cited by 358
SCHJØNNING, P., CHRISTENSEN, B. T., & CARSTENSEN, B. (1994) · European Journal of Soil Science · doi:10.1111/j.1365-2389.1994.tb00508.x · Cited by 277
Mukhopadhyay, S., Maiti, S. K., & Masto, R. E. (2014) · Ecological Engineering · doi:10.1016/j.ecoleng.2014.07.001 · Cited by 213
Metadata
- Authors
- Thomas, G. W.
- Venue
- Agronomy Monographs
- Publisher
- Wiley
- Published
- 1982-02
- Pages
- 159-165
- ISSN
- 0065-4663 (ISSN-L)
- 2156-3276
- OpenAlex
- W4246289461
- Cited by
- 1,249
- References
- 1
- Type
- other
- Language
- en
- Open access
- closed
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- Thomas, G. W. (1982). Exchangeable Cations. Agronomy Monographs. https://doi.org/10.2134/agronmonogr9.2.2ed.c9
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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