Microwave Extraction

Dean, John (2012) Microwave Extraction. In: Comprehensive Sampling and Sample Preparation: Analytical Techniques for Scientists. Elsevier, London, pp. 135-149. ISBN 9780123813749

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Abstract

The evolution and development of microwave technology for extraction of organic compounds from (semi)solid matrices is reviewed. After clarification of the terminology that encapsulates this approach, this chapter investigates the following key areas: the principle of microwave heating and differences from conventional heating; generic instrumentation including magnetron, wave guide, resonance cavity, and power supply; factors affecting microwave extraction including choice of organic solvent, sample size, microwave power, and extraction time; typical operating conditions based on US Environmental Protection Agency methods; standard methods are summarized and novel developments are explored in terms of the use of heat transformer disks with nonpolar solvents, microwave-assisted Soxhlet extraction and online systems for automating sample preparation prior to chromatographic analysis; a mini-history of the popularity of the approach with respect to sample types is considered; and the commercial suppliers of instrumentation are identified.

Item Type:	Book Section
Additional Information:	In 4 volumes. DOI given above is for this chapter specifically.
Uncontrolled Keywords:	Atmospheric microwave extraction; Choice of organic solvent; Extraction time; Focused microwave extraction; Heat transformer disks; Microwave extraction; Microwave power; Online microwave extraction; Organic compounds; Pressurized microwave extraction
Subjects:	C900 Others in Biological Sciences F100 Chemistry
Department:	Faculties > Health and Life Sciences > Applied Sciences
Depositing User:	Ay Okpokam
Date Deposited:	21 Feb 2012 08:43
Last Modified:	12 Oct 2019 18:27
URI:	http://nrl.northumbria.ac.uk/id/eprint/5457

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