Supercritical Fluid Extraction (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids as the extracting solvent. Extraction is usually from a solid matrix, but can also be from liquids. SFE can be used as a sample preparation step for analytical purposes, or on a larger scale to eithe...
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http://en.wikipedia.org/wiki/Supercritical_fluid_extraction
(from the article `separation and purification`) Supercritical-fluid extraction (SFE) is an important method for large-scale purification of complex liquid or solid matrices, such as polluted ... ...pressure, the density of the fluid can be 90 percent or more of the liquid density. The German chemist Ernst Klesper and his colleagues wor...
Found on
http://www.britannica.com/eb/a-z/s/187
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