Supercritical Fluid Extraction and its Use in Chromatographic Sample Preparation

Language: English

Published by Springer Nature B.V. Nov 1992, 1992

0751400890 / 9780751400892

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Neuware - by Professor D. E. Games, Mass Spectrometry Research Unit, University College of Swansea Sample preparation can be viewed as occupying a Cinderella role in analytical science. However, the quality of sample preparation plays a key role in high In the past decade, there has been quality analysis and deserves higher stature. considerable interest in the use of supercritical fluid extraction (SFE) as an alternative to conventional procedures for the preparation of samples for ana lysis. The driving force for this development is the need for automated, sim pler, faster, non-destructive and selective methods for extraction, preferably using non-toxic extraction media which are easily disposed of. Utilization of supercritical fluids for extraction fulfils these requirements because of their unique physical chemical properties and usually low toxicity. Selectivity can be achieved by suitable selection of pressure (density), temperature and modi fier conditions which enable solvating power to be varied. The high diffusivity of supercritical fluids provides rapid sample penetration and extraction. Use of fluids with low critical temperatures enables extraction to be conducted under mild thermal conditions ensuring that thermally labile compounds do not decompose. The technique can be used off-line, and the extracts analysed by appropriate techniques, or it can be used on-line, by coupling with a variety of chromatographic techniques. These can then, if necessary, be coupled fur ther with spectroscopic techniques, such as Fourier transform infrared, ultra violet or mass spectrometry, to provide specific identification or structural information.

Seller Inventory # 9780751400892

Title
Supercritical Fluid Extraction and its Use in Chromatographic Sample Preparation
Author
S. A. Westwood
Publisher
Springer Nature B.V. Nov 1992
Publication year
1992
Condition
Neu
Binding
Buch
Language
English
ISBN 10
0751400890
ISBN 13
9780751400892
Item weight
444 grams
Dimensions
234x156x13 mm

AHA-BUCH GmbH

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