Supercritical Fluid Extraction: Supercritical Fluid, Solvent, Solid, Sample Preparation (Analytical Chemistry)
 |
|
Описание:
High Quality Content by WIKIPEDIA articles! 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 either strip unwanted material from a product (e.g. decaffeination) or collect a desired product (e.g. essential oils). Carbon dioxide (CO2) is the most used supercritical fluid, sometimes modified by co-solvents such as ethanol or methanol. Extraction conditions for supercritical CO2 are above the critical temperature of 31°C and critical pressure of 74 bar. Addition of modifiers may slightly alter this. The discussion below will mainly refer to extraction with CO2, except where specified.Похожие книги
 | Acid-base Extraction Год: 2011 |
 | Text Mining for Biology And Biomedicine Автор: Murali Vallath Год: 2005 |
 | PX, a computational logic Автор: Susumu Hayashi Год: 1988 |
 | Solid-Phase Extraction: Principles, Techniques, and Applications Автор: Nigel J.K. Simpson Год: 2000 |
