Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 31 (1924) > Annual Issue
Document Type
Research
Abstract
Separation methods for the determination of colloidal material in soils have been eliminated by microscopic analysis, and proof of the existence of secondary reactions has cast doubt on many of the so-called adsorption methods. An adsorption method depending upon measurement of the partition coefficients for dye with alcohol and chloroform has been devised. The soil is saturated with dye from water, dried, extracted to equilibrium with chloroform, again dried and extracted with alcohol. The color in the alcohol is a measure of the colloidal surface. The method is simple and eliminates secondary reactions.
Publication Date
1924
Journal Title
Proceedings of the Iowa Academy of Science
Volume
31
Issue
1
First Page
285
Last Page
285
Copyright
©1924 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Moses, D. Verne
(1924)
"Determination of the Colloidal Materials in Soils,"
Proceedings of the Iowa Academy of Science, 31(1), 285-285.
Available at:
https://scholarworks.uni.edu/pias/vol31/iss1/75