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Supercritical fluid extraction

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Abstract

Supercritical fluid extraction (SFE) provides for the first time a viable option to conventional and widely used Soxhlet extraction. The ability to change the solvating power of a single supercritical fluid by changing its density is an exceedingly attractive feature. An environmentally safe alternative such as supercritical carbon dioxide to organochlorine solvents which are widely used today in many government and industrial analytical laboratories for sample preparation is desirable. SFE may also constitute a viable alternative to other popular sample preparation techniques such as liquid-liquid extraction, solid phase extraction and purge/trap. Much research, however, must be done in order to understand, optimize and apply this technology. For example, (a) automation of extraction, (b) matrix effects, (c) new fluids/modifiers/additives, (d) trapping efficiency, (e) recovery of extracted analytes, and (f) extraction kinetics are some areas which need a greater understanding. This review is concerned with many of these topics as they relate to trace organic analysis wherein SFE is the primary sample preparation technique.

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Authors and Affiliations

  1. Department of Chemistry, Virginia Polytechnic Institute and State University, 24061, Blacksburg, Virginia, USA

    Joseph L. Hedrick, Leah J. Mulcahey & Larry T. Taylor

Authors
  1. Joseph L. Hedrick
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  2. Leah J. Mulcahey
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  3. Larry T. Taylor
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Hedrick, J.L., Mulcahey, L.J. & Taylor, L.T. Supercritical fluid extraction. Mikrochim Acta 108, 115–132 (1992). https://doi.org/10.1007/BF01242421

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  • DOI: https://doi.org/10.1007/BF01242421

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