Acid digestion of marine samples for trace element analysis using microwave heating

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DOIResolve DOI: http://doi.org/10.1039/AN9881300159
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TypeArticle
Journal titleAnalyst
ISSN0003-2654
Volume113
IssueJanuary 1
Pages159163; # of pages: 5
AbstractA commercial laboratory microwave-acid digestion system employing two types of closed vessel, (A) completely closed and (B) pressure-relief type, was evaluated for use in sample decomposition prior to the determination of trace elements in marine biological tissue and sediment samples. The decomposition procedure consists in acid digestion in Teflon PFA vessels (with an HNO3-HClO4 mixture for marine biological tissues and an HNO3-HF-HClO4 mixture for marine sediments) using microwave heating. Subsequent evaporation on a hot-plate was undertaken with the sediment material. The resulting solutions are analysed by flame and graphite furnace atomic absorption spectrometry and by inductively coupled plasma atomic emission spectrometry. Both vessels provide rapid and almost equally satisfactory results for sample dissolution and analysis. Vessel A was judged to be more convenient whereas vessel B is likely to be safer. The sample preparation time was approximately 30 min for the marine biological tissue and 3–4 h for the marine sediment samples (including subsequent evaporation time on a hot-plate following a 30-min microwave digestion).
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedNo
Identifier10306407
NRC number1302
NPARC number8899180
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Record identifierb405cf4e-f0c9-43a1-8da8-a3165ff1aaab
Record created2009-04-22
Record modified2016-05-09
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