Comparison of the efficiencies of on-line and high-pressure closed vessel approaches to microwave heated sample decomposition

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DOIResolve DOI: http://doi.org/10.1007/BF00322927
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TypeArticle
Journal titleFresenius' Journal of Analytical Chemistry
ISSN0937-0633
Volume349
IssueJune 6
Pages428433; # of pages: 6
AbstractTwo microwave heated digestion techniques have been tested with a view to the evaluation of the effectiveness of wet decomposition procedures: a high-pressure/temperature focused microwave heated and an on-line microwave heated system. The efficiency of decomposition was studied using a number of biological reference materials as well as urine and sewage plant effluent. Oxidation reagents included mixtures of nitric acid, nitric acid/hydrogen peroxide and peroxodisulphate (“Oxisolv”). The residual carbon content of the digestate was determined coulometrically. Pressurised decomposition of a TFM-Teflon vessel is the most effective procedure (organic material is totally oxidised with nitric acid in a single-step procedure), whereas urine and sewage plant effluent are incompletely decomposed with on-line microwave heated digestion.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10467853
NRC number1314
NPARC number5765116
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Record identifierac9ca266-6d66-4afe-9409-72deaddb9d9e
Record created2009-03-29
Record modified2016-05-09
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