Determination of organically bound tritium background level in biological samples from a wide area in the south-west of France

Journal of Environmental Radioactivity
F PointurierR Chiappini

Abstract

In this paper, the authors describe a sensitive method for low-level non-exchangeable OBT determination. This methodology combines suitable sample treatment, a combustion apparatus for large-sized samples and low-background liquid scintillation spectrometry, along with precautions that substantially reduce the risks of sample contamination. Great care must be taken in the measurement of non-exchangeable OBT at environmental levels. Many authors have discussed the opportunities for cross-contamination between samples and contamination by exchange with the laboratory atmosphere. The authors also describe an application of the methodology to a large-scale sampling and measurement campaign, aimed at the determination of the environmental non-exchangeable OBT background level in tree leaves and ferns collected on the site and in the vicinity of a research centre located in the south-west of France, not far from Bordeaux. This study constitutes a "zero level" for the non-exchangeable OBT activity, as, to our knowledge, there is no tritium source within or in the surroundings of the sampled area capable of producing non-exchangeable OBT activities above the natural levels. Our analyses showed that non-exchangeable OBT activities in th...Continue Reading

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Citations

Apr 16, 2013·Journal of Environmental Radioactivity·Sang-Bog Kim, Jennifer Roche
Feb 8, 2014·Journal of Environmental Radioactivity·V Y KorolevychP A Davis
Apr 4, 2014·Journal of Environmental Radioactivity·Yan-Jun HuangZhi-Hong Shang-Guan
Mar 4, 2014·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·I SvetlikL Tomaskova
Feb 13, 2016·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Lin DuWei Liu
Nov 10, 2015·Journal of Environmental Radioactivity·P Le GoffM Fromm
Mar 6, 2016·Journal of Environmental Radioactivity·P SimekV Stepan
Sep 16, 2015·Journal of Environmental Radioactivity·S B KimC Bucur
Jun 5, 2004·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·A V Harms, S M Jerome
Sep 11, 2013·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Sang Bog Kim, Marilyne Stuart
Aug 22, 2013·Journal of Environmental Radioactivity·S B KimP A Davis
Nov 7, 2017·Journal of Radioanalytical and Nuclear Chemistry·Richard I MarshNadereh St-Amant
Oct 3, 2008·Radiation and Environmental Biophysics·D GaleriuN M J Crout
May 8, 2018·British Journal for the History of Science·Sebastián Gil-Riaño

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