Environmental and personnel monitoring for uranium by delayed neutron counting

At the Imperial College Reactor Centre we have developed a fully automated, large sample, high sensitivity delayed neutron counting system for routine analysis of environmental samples and personnel monitoring. Two-hundred fifty samples with a maximum volume of 30 ml can be analysed each working day...

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Bibliographic Details
Published in:Science of the total environment 1993-03, Vol.130-131, p.267-274
Main Authors: Benzing, R., Parry, S.J., Baghini, N.M., Davies, J.A.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
delayed neutrons
environment
Exact sciences and technology
Humans
Neutrons
Plants - chemistry
Radiation Monitoring - methods
Radiochemical methods
Scintillation Counting
Soil - analysis
uranium
Uranium - analysis
Uranium - urine
Water - chemistry
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Summary:At the Imperial College Reactor Centre we have developed a fully automated, large sample, high sensitivity delayed neutron counting system for routine analysis of environmental samples and personnel monitoring. Two-hundred fifty samples with a maximum volume of 30 ml can be analysed each working day. The detection limits (3σ) for uranium of natural isotopic abundance in our routine samples are typically 1 μg/kg (0.05 Bq/kg) for dry samples and 1 μg/l (0.05 Bq/l) for aqueous samples. Daily analysis of BNFL uranium standards, ‘in house’ uranium standards and weekly analysis of IAEA Soil-7 reference material are used to ensure constant system sensitivity and accuracy.
ISSN:0048-9697
1879-1026
DOI:10.1016/0048-9697(93)90081-G