The temporal variations of (7)Be, (210)Pb and (210)Po in air in England

We have conducted measurements of naturally occurring radionuclides (7)Be, (210)Pb and (210)Po in air at ground level at Chilton, Oxfordshire, England. The sampling and analysis regime for the latter two isotopes has been optimised to minimise uncertainties in measurement due to decay of (210)Po and...

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Bibliographic Details
Published in:Journal of environmental radioactivity 2005, Vol.84 (3), p.457
Main Authors: Daish, S R, Dale, A A, Dale, C J, May, R, Rowe, J E
Format: Article
Language:English
Subjects:
Air Pollutants, Radioactive - analysis
Beryllium - analysis
Bismuth - analysis
England
Lead Radioisotopes - analysis
Polonium - analysis
Radiation Monitoring
Radioisotopes - analysis
Seasons
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Summary:We have conducted measurements of naturally occurring radionuclides (7)Be, (210)Pb and (210)Po in air at ground level at Chilton, Oxfordshire, England. The sampling and analysis regime for the latter two isotopes has been optimised to minimise uncertainties in measurement due to decay of (210)Po and in-growth of (210)Pb during the sampling and analysis period. Analysis times were reduced by using Cerenkov counting to assay the (210)Bi daughter of (210)Pb. Monthly data collected over a four-year period are presented and discussed. (7)Be activity concentrations appear to peak in spring. (210)Pb activity concentrations also follow a seasonal trend reflecting different (222)Rn emanation rates from soil during winter and summer. Data for (210)Po show no such trend.
ISSN:0265-931X
DOI:10.1016/j.jenvrad.2005.05.003