Microwave digestion procedures

Tamba, M. G., del M., Falciani, R., Lopez, T. D., and Coedo, A. G. (1994). One-step microwave digestion procedures for the determination of aluminium in steels and iron ores by inductively coupled plasma atomic emission spectrometry. Analyst 119 2081-2085. 

Reynolds [271] reviewed microwave digestion procedures for the analysis of metal-contaminated soils, and this technique has been found to give better than 80% accuracy for a wide range of metals [268]. 

Mamble, K.J., Hill, S.J. Microwave digestion procedures for environmental matrices. Analyst 123, 103R-133R (1998)... 

Pougnet, M., Michelson, S., Downing, B. Microwave digestion procedure for ICP-AES analysis of biological samples. J. Microw. Power Electromagn. Energy 26, 140-145 (1991)... 

To check whether the apparently lower results of Lab. 13 could be ascribed to the short duration of their microwave digestion procedure (3 h at 70°C with HNO3 in an open system), the laboratory compared the 3 h digestion procedure with a longer digestion (24 h) and could not observe any difference. The results were accepted. 

The microwave digestion procedure is limited to a maximum sample size of about 0.1 g. This is due to the pressure generated by the evolution of carbon dioxide and other gaseous digestion by-products from the acid solution. Despite the small sample size, microwave digestion provides additive concentration results that exhibit little or no increase in variability from those procedures for which sample size is not a constraint. However, this may not be the case for trace analyte concentrations where some loss of precision will inevitably occur. 

Kokot S., King G., Teller H. R. and Massart D. L. (1992) Application of chemometrics for the selection of microwave digestion procedures. Anal. Chim. Acta 268, 81-94. 

In another study, the uranium content in four types of plants and plant components growing in a boreal forest in Finland a microwave digestion procedure was... 

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