| Issue |
Analusis
Volume 27, Number 5, June 1999
Humic substances
|
|
|---|---|---|
| Page(s) | 452 - 457 | |
| Section | Original articles | |
| DOI | https://doi.org/10.1051/analusis:1999124 | |
DOI: 10.1051/analusis:1999124
Microwave - ultrasound combined reactor suitable for atmospheric sample preparation procedure of biological and chemical products
A. Lagha1, S. Chemat1, 2, P.V. Bartels2 and F. Chemat21 Institut de Chimie Industrielle, University of Blida, BP. 270, route de Soumaa, 09000 Blida, Algeria
2 Agrotechnological Research Institute ATO-DLO, P.O. Box 17, NL- 6700 AA Wageningen, The Netherlands
Abstract
A compact apparatus in which a specific position can be irradiated by microwaves (MW) and ultrasound (US) simultaneously has been developed. The MW-US reactor has been designed for
atmospheric pressure digestion and dissolution of biological and chemical products. The reactor can treat a range of throughputs of 0.1 to 10 grams of a liquid or solid sample. Its application in
analytical chemistry has been shown by two examples where decreases in digestion and dissolution time were demonstrated: determination of copper in olive oil and dissolution of refractory
mineral material Co3O4. Simultaneous microwave and ultrasound irradiation is shown as a new technique for atmospheric pressure digestion and dissolution of solid and liquid samples suitable for
chemical and biological analysis.
Key words: Microwave / ultrasound / olive oil / mineral / digestion / dissolution.
© EDP Sciences, Wiley-VCH 1999