Semi-automatic combustion of environmental and biological samples on Oxidizer M307 and equivalents: New solutions for background reduction

Journal of Labelled Compounds & Radiopharmaceuticals
Corina A SimionConstantin Nechita

Abstract

The aim is to introduce and characterize a new experimental demonstrative model contributing to the increase of measurement accuracy, in terms of minimum detectable activity (MDA) and background reduction, for the analysis of samples having low concentrations in tritium and radiocarbon on Quantulus 1220. The clue is related to the qualitative and quantitative differences between tritium and carbon-14 inventories of the pulp used to manufacture the cups involved in noncatalytic combustion of samples by flame oxidation method. The quality of the experimental results depends on the temporal origin of the wood from which the pulp/cellulose was extracted/purified, the specific inventory contributing to the threshold level of the MDA for the beta-emitting radionuclide to be investigated. Finally, the aim is to create and to use such a 100% old cellulose combustion cups for determining low concentrations of these radionuclides. It may be obtained by an adapted technology following the literature data and may be recommended for routine analyses of environmental samples coming from areas with no nuclear or minor nuclear influences, and also for low-level biological samples. This first attempt resulted in improvement of measurement perfo...Continue Reading

References

Dec 24, 2003·Journal of Environmental Radioactivity·M EspositoV Jovanović
Feb 27, 2009·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·I Krajcar BronićB Obelić
Jun 6, 2015·Journal of Vector Ecology : Journal of the Society for Vector Ecology·Rafael Gutiérrez-LópezJordi Figuerola
May 24, 2016·Journal of Environmental Radioactivity·Željko GrahekNataša Todorović
May 20, 2018·Journal of Environmental Radioactivity·Octavian G DuliuMuataz Dheyaa Shnawaw

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