Abstract
This chapter discusses the advances made in the field of analytical supercritical fluid extraction (SFE). The rapid increase in publications describing analytical-scale SFE over the last four years attests to both the interest in, and the need for new sample extraction methods. A wide range of quantitative SFE applications has been reported, and several investigators have demonstrated that the ability of SFE to drastically reduce both the time required, and the quantities of waste solvents produced for sample extractions. Further developments in the use of modifiers, the extraction of water samples, class-selective extractions, and chemical derivatizations under SFE conditions may increase the range of quantitative SFE applications in the near future. However, analytical SFE is still a very new field, and a much deeper understanding of the physical and chemical factors that control extraction rates and efficiencies is required to support the development of routine and widely-applicable SFE methods, particularly for polar and high molecular weight analytes.
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