SSSAJ Grow Your Career with SSSA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published in Soil Sci Soc Am J 26:258-262 (1962)
© 1962 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Brown, J. M.
Right arrow Articles by Bartholomew, W. V.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Brown, J. M.
Right arrow Articles by Bartholomew, W. V.
Agricola
Right arrow Articles by Brown, J. M.
Right arrow Articles by Bartholomew, W. V.

Sorption of Anhydrous Ammonia by Dry Clay Systems1

James M. Brown and W. V. Bartholomew2

ABSTRACT

NH3 sorption and/or retention over the pressure range of 0 to 100 ml. of mercury by dry bentonite, halloysite, and synthetic gibbsite was investigated using a manometric technique employing equilibrium measurements in a special sorption apparatus. Chemisorbed NH3 is believed to be that which has gained a proton and undergone exchange reactions with the exchangeable cations and that which has reacted with the weakly dissociated hydroxyl groups of the lattice edges. The differential influence of saturating cations is believed to be due, at least in part, to the differences in degrees of hydration of these ions. Possible mechanisms of sorption are proposed.

There were no differences in amounts of NH3 sorbed and chemisorbed by Ca-bentonite adjusted to pH 8, 9, and 10. This lack of influence is explained on the basis of the pH range involved and the mechanisms of sorption. The failure of synthetic gibbsite, Al(OH)3, to chemisorb NH3 is explained by the basic nature of the mineral.

NOTES

1 Contribution from the Department of Soils, North Carolina Agr. Exp. Sta., North Carolina State College, Raleigh. Published with the approval of the Director as Paper No. 1335 of the Journal Series. Presented before Division III, Soil Science Society of America, at Cincinnati, Ohio, Nov. 19, 1959.

2 Agronomy Extension Specialist (Soil Management) and Professor of Soils, respectively.

Received for publication July 5, 1961. Accepted for publication September 11, 1961.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Vadose Zone Journal Journal of Plant Registrations
Journal of Natural Resources
and Life Sciences Education		 Journal of
Environmental Quality
Copyright © 1962 by the Soil Science Society of America.