Abstract
The dissolution of large environmental samples was investigated using a microwave autoclave, capable of digestion conditions of 300 °C and 200 bar, for the application of rapid determination of radionuclides. Six samples of up to 5 g plant material were digested, also eliminating predigestion steps such as ashing and grinding. Batches of forty 1 g samples of plant leaves were also completely digested in 75 minutes. Quantitative recovery of 90Sr from 5 g soil samples by leaching with 8M HNO3 at 200 °C was achieved, whereas 137Cs was not completely recovered from the large soil samples using total digestion or leaching (HCl:HNO3) techniques, but quantitative recovery was achieved using fusion and sinter procedures.
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Taylor, V.F., Evans, R.D. & Cornett, R.J. Rapid dissolution of large environmental samples for the determination of fission products. J Radioanal Nucl Chem 274, 545–553 (2007). https://doi.org/10.1007/s10967-006-6952-7
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DOI: https://doi.org/10.1007/s10967-006-6952-7