| Autor: |
Francis, C. W., Tamura, Tsuneo |
| Zdroj: |
Soil Science Society of America Journal; March 1972, Vol. 36 Issue: 2 p372-376, 5p |
| Abstrakt: |
Data revealed little resolution in banding is gained in centrifuging for 40 compared to 17 hours in a conventional centrifuge (force field less than 623 × g). On the other hand, the resolution obtained by centrifuging in an ultracentrifuge is considerably better than that obtained in a conventional refrigerated centrifuge. The clay fraction from a Dodge silt loam banded into nine fractions after centrifuging at 15,000 rpm (38,500 × g) for 17 hours. Characterization of each band allowed a much more extensive evaluation as to the quantities of each specific clay mineral present than the conventional estimates presently being made by examining X‐ray diffractograms of the total clay fractions. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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