MINERALOGY & CHARGE PROPERTIES OF
DISPERSIBLE COLLOIDALS

List of Tables

  1. Soil samples included in the S207 Project
  2. Particle size distribution determined by the pipette method using sodium-hexametaphosphate as a dispersing agent
  3. Various soil characterization properties
  4. Exchange phase characterization data
  5. Solution phase characterization data
  6. Water-dispersible clay (WDC) from field-moist and air-dried samples expressed as a percentage of whole soil and total clay
  7. Grouping of samples which produced WDC considered in the elemental composition analysis (After Walthall and Haigler)
  8. Elemental composition of water dispersible clay fraction
  9. Elemental composition of coarse clay fraction
  10. Elemental composition of fine clay fraction
  11. Elemental composition of whole soil (<2mm fraction)
  12. Correlation coefficients for elemental analysis of WDC and coarse- and fine-clay fractions for select soil groupings based on clay mineralogy
  13. Organic carbon content of whole soil (<2mm fraction) and clay (<2µm) fractions
  14. Estimated mineralogical composition for the WDC fraction
  15. Estimated mineralogical composition for the coarse-clay fraction
  16. Estimated mineralogical composition for the fine-clay fraction
  17. Non-crystalline materials extracted by acid oxalate
  18. Neutron activation analyses
  19. Select pairwise correlations for WDC (Astatula C excluded)
  20. Select pairwise correlations for WDC for kaolinitic soils, all horizons
  21. Select pairwise correlations for WDC for less-weathered soils, all horizons
  22. Parameters considered in step-wise regression
  23. Results of step-wise regression

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Last Modified: September 30, 1998

Document Prepared by:
North Carolina Agricultural Research Service
North Carolina State University