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

100%

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

Zeszyty Problemowe Postępów Nauk Rolniczych

1992

tom 398

97-100

Relations among clay particle aggregation, clay composition and the pH of equilibrium solution were studied using sedimetrical scales and sodium forms of clay fractions separated from six acidic soils of different origin. Experimentally obtained sedimentation curves were numerically extrapolated to infinite time and the mass of sediment virtually deposited was 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 (negative and positive) and their relative amounts. A pH increase lead to a decrease of aggregation for every case investigated.

Adhesion of humic acids to nonreactive surfaces: effect on surface free energy and wettability of glass

86%

Jozefaciuk G., Hajnos M., Sokolowska Z., Stawinski J., Polubesova T., Ponizovskij A.

International Agrophysics

1993

tom 07

nr 4

Ograniczanie wyników

1 International Agrophysics

1 Zeszyty Problemowe Postępów Nauk Rolniczych

2 Jozefaciuk G.

2 Polubesova T.

2 Ponizovskij A.

2 Stawinski J.

1 Brzezinski K.

1 Hajnos M.

1 Sokolowska Z.

1 1993

1 1992

Wyniki wyszukiwania

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

Adhesion of humic acids to nonreactive surfaces: effect on surface free energy and wettability of glass