SSSAJ Journal of Natural Resources and Life Sciences Education
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Published in Soil Sci Soc Am J 31:728-732 (1967)
© 1967 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Retention of Boron by Layer Silicates, Sesquioxides, and Soil Materials: I. Layer Silicates1

J. R. Sims and F. T. Bingham2

ABSTRACT

The characteristics of boron retention by layer silicates were studied. Boron retention was determined by a procedure developed for use with solution concentrations ranging from zero up to several hundred parts per million B, which consisted of treatment of the adsorbent with B solutions, washing with methanol to remove excess B, and extracting the retained B with 0.01N NaCl (pH 3).

Vermiculite, kaolinite, montmorillonite, and hydrobiotite all exhibited a pH-dependent affinity for B with maxima in the alkaline range. Access to the interlayer surfaces of the expanding lattice clays was necessary for maximum B retention by these clays. Boron retention by these layer silicates was, in the main, attributed to hydroxy iron and aluminum compounds occurring in the samples as impurities.

NOTES

1 Paper No 1791, Univ. of California, Citrus Res. Center and Agr. Exp. Sta., Riverside. Part of a dissertation presented by the senior author in partial satisfaction of the requirements of a graduate program in soil science for the Ph.D. degree. Presented before Div. S-2, Soil Sci. Soc. Amer., Aug. 21–26, 1966, at Stillwater, Okla.

2 Former Graduate Student and Professor of Soil Science, respectively. Present address of senior author: Assistant Professor of Soils, Montana State University, Bozeman.

Received for publication March 9, 1967. Accepted for publication May 9, 1967.






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Copyright © 1967 by the Soil Science Society of America.