Rediscovery of an Extraction Technique

Edward J. Behrman
The Ohio State University, Department of Biochemistry, 484 West 12th Avenue, Columbus, OH 43210-1292
J. Chem. Educ., 1998, 75 (1), p 80
DOI: 10.1021/ed075p80
Publication Date (Web): January 1, 1998
History, Education, and Documentation

Abstract

The technique consists of putting a few milliliters of the aqueous sample in a mortar and adding enough anhydrous sodium sulfate to react with all of the water. The thick paste is then ground up several times with a pestle and the appropriate solvent. The liquid water phase has been remove by formation of the hydrated salt; this results in rapid and quantitative extraction. The Soxhlet apparatus may be used instead if heat and time are of no concern.

Keywords (Audience):

General Public

Keywords (Domain):

History / Philosophy

Keywords (Subject):

Separation Science
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  • Received: August 03, 2009

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