The Composition of Inorganic Colloids Extracted from Three Iowa Soils

Authors

H. C. Dean, Iowa State CollegeFollow
F. B. Smith, Iowa State CollegeFollow
P. E. Brown, Iowa State CollegeFollow

Document Type

Research

Abstract

The purpose of this work was to determine the colloidal content of certain soils and to make analyses of the inorganic colloids extracted from these soils. These soils ranging from a pH of 5.53 to a pH of 7.60 were obtained and the total colloidal content determined. The inorganic colloids were then extracted according to Truog and Drosdorff's procedure (2) and analyzed for total SiO₂ , Al₂O₃ , Fe₂O₃ , TiO₂ , P₂O₅ and available K₂O. The total SiO₂, Fe₂O₃, Al₂O₃ and TiO₂ were determined by Hillebrand's method (1). The phosphorus content was determined by the magnesium nitrate method. The available K₂O was determined by the Aspergillus niger method.

Publication Date

1935

Journal Title

Proceedings of the Iowa Academy of Science

Volume

42

Issue

1

First Page

103

Last Page

104

Copyright

©1935 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

Dean, H. C.; Smith, F. B.; and Brown, P. E. (1935) "The Composition of Inorganic Colloids Extracted from Three Iowa Soils," Proceedings of the Iowa Academy of Science, 42(1), 103-104.
Available at: https://scholarworks.uni.edu/pias/vol42/iss1/35