This title appears in the Scientific Report :
2003
Please use the identifier:
http://dx.doi.org/10.1016/S0927-7757(02)00563-0 in citations.
Physicochemical characterization of potential colloids from agricultural topsoils
Physicochemical characterization of potential colloids from agricultural topsoils
A method based on sedimentation and centrifugation steps has been developed to fractionate agricultural topsoils after suspension in water. A high release of potential colloids has been observed with low Ca2+ concentration under soil solid-to-water weight ratio conditions higher than 1/3. The colloi...
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Personal Name(s): | Séquaris, J.-M. |
---|---|
Lewandowski, H. | |
Contributing Institute: |
Agrosphäre; ICG-IV |
Published in: | Colloids and surfaces / A, 217 (2003) S. 93 - 99 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2003
|
Physical Description: |
93 - 99 |
DOI: |
10.1016/S0927-7757(02)00563-0 |
Document Type: |
Journal Article |
Research Program: |
Chemie und Dynamik der Geo-Biosphäre |
Series Title: |
Colloids and Surfaces A:Physicochemical and Engineering Aspects
217 |
Subject (ZB): | |
Publikationsportal JuSER |
A method based on sedimentation and centrifugation steps has been developed to fractionate agricultural topsoils after suspension in water. A high release of potential colloids has been observed with low Ca2+ concentration under soil solid-to-water weight ratio conditions higher than 1/3. The colloidal stability is characterized in terms of particle size and electrokinetic properties. There is no systematic effect of the colloid phase organic carbon content varying from 2 to 5% on the critical coagulation concentration (CCC) and zeta potential results. Consequently, the observed CCC was tested by the Derjaguin-Landau-Verwey-Overbeeck theory by taking into account physicochemical properties of the colloid phase mineral content. (C) 2002 Elsevier Science B.V. All rights reserved. |