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Soil Science Society of America Journal Abstract -

Adaptation of the Soxhlet Extractor for Pedologic Studies1


This article in SSSAJ

  1. Vol. 42 No. 6, p. 984-986
    Received: Apr 10, 1978
    Accepted: July 20, 1978

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  1. G. A. Singleton and
  2. L. M. Lavkulich2



The use of the soxhlet apparatus has had limited success in its application to pedogenic weathering studies. Modified designs of the original soxhlet eliminated problems of sample inundation, erosion, and leachate contamination. The modifications, which utilized extraction thimbles, were made either by reducing the height (A) or completely removing (B) the siphon tube. B-modified extractors increased Ca extractability of a soil material from the original 50 ppm to 210 ppm compared to an increase to 125 ppm in the unmodified apparatus. Use of a CO2 atmosphere in modification A caused rapid change in reaction of the material from the initial pH 5.1 to 4.5 compared to pH 6.1 in unmodified units. The use of these modified soxhlets showed promise in simulating pedogenic processes.

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