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Published in Soil Sci Soc Am J 30:685-688 (1966)
© 1966 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Soil Adsorption of Linear Alkylate Sulfonate1

G. S. R. Krishna Murti, V. V. Volk and M. L. Jackson2

ABSTRACT

Linear alkylate sulfonate (LAS) adsorption was studied in relation to the pH, cation-exchange capacity, clay, organic matter, extractable Fe and Al, exchangeable Al, and Fe2O3 contents of several soils. The LAS adsorption correlated highly significantly with the organic matter content (r = 0.81) and the P fixing capacity (r = 0.75) of the soils. With the removal of sesquioxides as the final pretreatment on chloritic, kaolinitic and allophanic soils the LAS adsorption decreased from values of 19 to 48 µ g/g on the untreated soil to a value of zero. When treated with a terminal H2O2 treatment, the adsorption values on the same soils ranged from 17 to 65 µ g/g. The increase apparently occurred as a result of Fe and Al released from organic chelates. The increase in the LAS adsorption from 7 to 27 µ g/g on the untreated soil to 8 to 50 µ g/g after the removal of both the organic matter and sesquioxides in a number of montmorillonitic Wisconsin soils indicates the importance of montmorillonite in LAS adsorption.

NOTES

1 Contribution from the Department of Soil Science, University of Wisconsin, Madison. Supported in part by the Rockefeller Foundation (to the first author), in part by the National Institutes of Health (Award 1-FL-WP-24, 086-01 to second author), and in part by the National Science Foundation, G13793-Jackson. Presented before Div. S-2, Soil Science Society of America, Aug. 22–25, 1966 at Stillwater, Okla.

2 Assistant Physicist, Indian Agr. Res. Inst., Delhi, India (on leave as Postdoctoral Rockefeller Foundation Research Fellow), Project Associate, and Professor, respectively.

Received for publication May 2, 1966. Accepted for publication August 25, 1966.






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Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
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Environmental Quality		 The Plant Genome
Copyright © 1966 by the Soil Science Society of America.