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Matusiewicz H. Development of a high-pressure asher focused microwave system for sample preparation. Anal Chem. 1999;71(15):3145-9doi: 10.1021/ac9901743.
Matusiewicz, H. (1999). Development of a high-pressure asher focused microwave system for sample preparation. Analytical chemistry, 71(15), 3145-9. https://doi.org/10.1021/ac9901743
Matusiewicz, H. "Development of a high-pressure asher focused microwave system for sample preparation." Analytical chemistry vol. 71,15 (1999): 3145-9. doi: https://doi.org/10.1021/ac9901743
Matusiewicz H. Development of a high-pressure asher focused microwave system for sample preparation. Anal Chem. 1999 Aug 01;71(15):3145-9. doi: 10.1021/ac9901743. PMID: 21662905.
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Anal Chem. 1999 Aug 01;71(15):3145-9. doi: 10.1021/ac9901743.

Development of a high-pressure asher focused microwave system for sample preparation.

Analytical chemistry

H Matusiewicz

Affiliations

  1. Department of Analytical Chemistry, Politechnika Pozna?ska, 60-965 Pozna?, Poland.

PMID: 21662905 DOI: 10.1021/ac9901743

Abstract

The development of high-pressure Asher focused microwaves (HPA-FMs), a novel approach to microwave assisted digestion, is described. The system uses focused microwaves, at 2.45 GHz, to improve digestion capability with up to 650 W microwave power concentrated into six quartz pressure vessels containing samples and nitric acid. The device combines microwave heating with high-pressure vessel technology (reactions can be conducted at pressures and temperatures up to 130 bar and 320 °C, respectively). Methodology was developed using powdered biological reference material. The residual carbon content of digested bovine liver sample was determined by Coulometry after combustion in an oxygen stream to evaluate the effectiveness of the decomposition procedure. With this new decomposition device, organic material is totally oxidized with nitric acid in a single-step digestion.

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