Influence of solid phase composition and pH on aggregation of soil clay fraction

G. Jozefaciuk, J. Stawinski, K. Brzezinski, T. Polubesova, A. Ponizovskij

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Relations among clay particle aggregation, clay composition and the pH of equilibrium solution were studied using sedimentrical scales and sodium forms of clay fractions separated from six acidic soils of different origin. Experimentally obtained sedimentation curves were numerically extrapolated and the mass of sediment taken as a basic factor characterizing aggregation. Aggregation of investigated clays was significantly influenced by the presence of particular solid phase components, i.e. organic matter, iron and aluminium compounds, which are apparently connected with their surface charges and their relative amounts. A pH increase lead to a decrease of aggregation for every case investigated. -Authors

Original languageAmerican English
Pages (from-to)97-100
Number of pages4
JournalZeszyty Problemowe Postepow Nauk Rolniczych - Polska Akademia Nauk
StatePublished - 1992
Externally publishedYes


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