Results 241 to 250 of about 656,890 (291)

Lignin analysis using microwave digestion

Biotechnology Letters, 2012
Lignin quantification in apple pomace residues was carried out using a microwave oven to replace traditional refluxing during the mild acidolysis step to augment the selectivity of this step towards cleavage of lignin-carbohydrate bonds and to reduce the time needed to quantify lignin.
Fatma, Gassara, C M, Ajila, Satinder K, Brar, R D, Tyagi, M, Verma, J R, Valero   +5 more
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Practical options for microwave digestions

TrAC Trends in Analytical Chemistry, 1990
Abstract In this article some options for the use of microwave ovens to facilitate acid digestion of various analytical samples are dicussed. The use of inexpensive domestic ovens in conjunction with commercially available PTFE digestion vessels is highlighted.
Graham M. Kimber, Serge Kokot
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Microwave digestion: an analysis of procedures

Analytica Chimica Acta, 1992
Abstract Principal component analysis (PCA) and the multicriteria decision making methods, PROMETHEE and GAIA, were used to select a suitable microwave digestion method for metal analysis of soil samples. When the residuals matrix derived from the Cu, Pb, Co, Mn and Zn analyses of 18 different digests of the NBS 2704 SRM, was subjected to PCA and ...
S. Kokot, G. King, H.R. Keller, D.L. Massart   +3 more
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Microwave Digestion of Brewing Materials

Journal of the American Society of Brewing Chemists, 1989
A Teflon high-pressure vessel and concentrated nitric acid were used to digest solid brewing samples in a conventional microwave oven.
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Ultrafast Microwave-Assisted In-Tip Digestion of Proteins

Journal of Proteome Research, 2009
Trypsin was immobilized on glycidylmethacrylate-co-divinylbenzene (GMA/DVB) polymerized in pipet tips for online enzymatic digestion of proteins. The major advantages of in-tip digestion are easy handling and small sample amount required for analysis. Microwave-assisted digestion was applied for highly efficient and time saving proteolysis. Adaption to
Hans W, Hahn, Matthias, Rainer, Thomas, Ringer, Christian W, Huck, Günther K, Bonn   +4 more
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Application of microwave digestion to the analysis of peat

The Analyst, 1987
A microwave digestion technique for the dissolution of peat is described and compared with a dry ashing method and a nitric-perchloric-hydrofluoric acid wet digestion. Peat samples with different organic matter contents were used and Ca, Mg, Fe, Al, Na, K, Mn, Zn, Cu and Li were determined by atomic absorption spectrometry.
Clara S. E. Papp, Lynn B. Fischer
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LONG-TERM STORAGE OF MICROWAVE DIGESTS

Communications in Soil Science and Plant Analysis, 2002
The use of microwave radiation for multi-element digestion of soil and plant materials has become a common procedure in many laboratories due primarily to increased efficiency over other conventional digestion methods. Little information is available, however, on the length of time that microwave digests can be stored prior to analysis, and if there is
Joel A. Crumbaugh, Yash P. Kalra
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Inorganic Microwave Digestions Incorporating Bases

Analytical Chemistry, 1994
The use of bases in the microwave digestion of inorganics is discussed. This alternative to typical acid microwave digestions has proven useful in specific cases. The specific examples include the digestion of materials which contained barium aluminate (BaAl 2 O 4 ), cobalt oxide (CoO), molybdenum oxides (MoO 2 and MoO 3 ), thorium oxide (ThO 2 ), and/
Bradley D. Zehr, Judith P. VanKuren, Hugh M. McMahon   +2 more
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Digestion of dust samples in a microwave oven

Science of The Total Environment, 1994
Abstract The use of a microwave oven for the rapid digestion of dust samples has been evaluated. Deposited dust collected for the study and reference samples representing municipal waste incineration ash, urban particulate matter and river sediments were the samples used in the study.
Y. Feng, R.S. Barratt
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Microwave digestion of hardly dissoluble samples

Journal of Radioanalytical and Nuclear Chemistry, 2011
This paper describes a method for digestion of hardly dissoluble samples such as soil, sand, glass fiber and cellulose filters via microwave. The evaluation of this method was conducted by automatic TDCR liquid scintilation counter Hidex 300 SL. The alpha tracer 244Cm was used for the assessment of efficiency.
Janda Jiri, Sladek Petr, Sas Daniel
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