Study of the acid-base properties of mineral soil horizons using pK spectroscopy

The presence of groups 4 and 5 participating in acid-base equilibria was revealed in samples from mineral horizons of the gley-podzolic soil of the Komi Republic using pK spectroscopy (the mathematical processing of potentiometric titration curves for plotting the distribution of acid groups accordi...

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Bibliographic Details
Published in:Eurasian soil science 2007-11, Vol.40 (11), p.1169-1174
Main Authors: Shamrikova, E. V., Vanchikova, E. V., Ryazanov, M. A.
Format: Article
Language:English
Subjects:
Acidity
Acids
Amino acids
Analysis
Forest soils
Heterogeneity
Soil acidity
Soil horizons
Soil types
Spectroscopy
Spectrum analysis
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Summary:The presence of groups 4 and 5 participating in acid-base equilibria was revealed in samples from mineral horizons of the gley-podzolic soil of the Komi Republic using pK spectroscopy (the mathematical processing of potentiometric titration curves for plotting the distribution of acid groups according to their pK values). The specific quantity of acid-base sites in soil samples was calculated. The contribution of organic and mineral soil components to the groups of acid-base sites was estimated. The pK values of groups determining the potential, exchangeable, and unexchangeable acidities were found. The heterogeneity of acid components determining different types of soil acidity was revealed. DOI: 10.1134/S1064229307110038
ISSN:1064-2293
1556-195X
DOI:10.1134/S1064229307110038