Dynamic microwave-assisted extraction.

M Ericsson; A Colmsjö

doi:10.1016/s0021-9673(00)00246-6

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PubMed · 10845796

Dynamic microwave-assisted extraction.

M Ericsson·A Colmsjö

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Abstract

An apparatus for extraction of solid matrices has been constructed which utilizes a microwave technique for heating in a dynamic mode. During the extraction, fresh solvent is continuously pumped through the extraction cell, which is maintained at a slight overpressure in order to keep the solvent in a liquid state. The extraction efficiency, which can be easily monitored, has been investigated in a factorial design and validated for polycyclic aromatic hydrocarbons in a reference sediment sample (EC-1). Important parameters were found to be temperature and duration of extraction. Flow-rate had no significant first-order effect on the recovery, but interaction effects with flow-rate were found to be significant. The dynamic microwave-assisted extraction apparatus was demonstrated to yield recoveries equivalent to Soxhlet extraction, but in a much shorter time. Each extraction of EC-1 typically takes 40 min.

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M Ericsson, A Colmsjö. 2000-04-28. Dynamic microwave-assisted extraction.. https://doi.org/10.1016/s0021-9673(00)00246-6

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