2002
DOI: 10.1016/s0584-8547(02)00172-6
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Focused-microwave-assisted strategies for sample preparation

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Cited by 92 publications
(43 citation statements)
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“…In the closed vessel systems microwave energy is dispersed throughout the cavity, whereas in commercial open vessels system the energy is focused on the part of the digestion vessel containing the sample. Many applications for fruits in closed systems under pressure (Bhandari & Amarasiriwardena, 2000) and in open systems at atmospheric pressure (Nobrega, Trevizan, Araujo, & Nogueira, 2002) have been described. The major advantage of the closed microwave digestion technique is the high heating efficiency which can be obtained.…”
Section: Introductionmentioning
confidence: 99%
“…In the closed vessel systems microwave energy is dispersed throughout the cavity, whereas in commercial open vessels system the energy is focused on the part of the digestion vessel containing the sample. Many applications for fruits in closed systems under pressure (Bhandari & Amarasiriwardena, 2000) and in open systems at atmospheric pressure (Nobrega, Trevizan, Araujo, & Nogueira, 2002) have been described. The major advantage of the closed microwave digestion technique is the high heating efficiency which can be obtained.…”
Section: Introductionmentioning
confidence: 99%
“…Microwave-accelerated digestion has become the most commonly used sample pre-treatment method for the determination of trace element concentrations in solid samples by ICP-OES [19][20][21][22][23]. Microwave-assisted digestion can be performed in open or closed digestion systems.…”
Section: Introductionmentioning
confidence: 99%
“…A tecnologia atual pode ser dividida em sistemas com cavidade, que geralmente são operados sob altas pressão e temperatura, e em sistemas com radiação focalizada, que freqüentemente envolvem operação à pressão atmosférica. Mesmo considerando-se a disseminação desses procedimentos demonstrada em artigos de revisão [2][3][4] , novas estratégias estão sendo desenvolvidas usando fornos de microondas com radiação focalizada [5][6][7][8] . Recentemente foi proposto um procedimento alternativo de digestão que se baseia na adição gradual de amostras líquidas, de baixa viscosidade, sobre o ácido aquecido por ação da radiação microondas em um forno com focalização 9,10 .…”
Section: Introductionunclassified