By Maria Dolores Luque Castro; Miguel Valcarcel Cases; M T Tena
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Additional resources for Analytical Supercritical Fluid Extraction
G. liquid-liquid extraction). On the other, the fairly extensive commercial availability of SFC is inconsistent with the relative scarcity of associated publications and developments compared to most analytical techniques. The manufacture of commercially available apparatuses and instruments, which has no doubt fostered the development of new applications and their customary use, has traditionally followed scientific and technical advances and feasibility tests. These seemingly contradictory facts are easy to explain, though: SFE aids efficient development of the first stage of the analytical process, which, as shown in Fig.
Even though the density of a fluid is known to be highly influential on solutesolvent interactions in the bulk of a supercritical solvent, fairly little is known about the nature of the interactions themselves or how they change with density . The dissolving power of an ordinary organic liquid solvent is essentially independent of its pressure since the liquid density is not affected by this variable. On the other hand, the density of a supercritical fluid can be altered over a wide range by changing the pressure, the temperature or both.
Autom. Chern. 20:88 23. Kingston HM, Jassie LB (1988) Introduction to microwave sample preparation. American Chemical Society, Washington 24. Izquierdo A, Luque de Castro MD (1990) J. Autom. Chern. 12:267 25. Giddings JC (1991) Unified separation science. Wiley, New York 26. Va1carcel M, Luque de Castro MD (1991) Non-chromatographic continuous separation techniques. Royal Society of Chemistry, Cambridge 27. Va1carcel M, Luque de Castro MD (1991) Trends Anal. Chern. 10:114 28. Va1carcel M, Luque de Castro MD (1994) Flow-through (bio)chemical sensors.
Analytical Supercritical Fluid Extraction by Maria Dolores Luque Castro; Miguel Valcarcel Cases; M T Tena