Exposure of burrowing mammals to Rn-222 (United Kingdom)
|Abstract||This dataset includes individual passive detector measurements of 222Rn in the air of artificial burrows, 222Rn measurements by instrumentation in soil gas of interstitial soil pores and burrow air, gamma analyses results for soil samples and, soil moisture and temperature data.|
Estimates of absorbed dose rates to wildlife from exposure to natural background radionuclides are required to put estimates of dose rates arising from regulated releases of radioactivity and proposed benchmarks into context. These data are from a study conducted at seven sites in northwest England (comprising broadleaved and coniferous woodlands, scrubland and pastures). Passive track etch detectors were used to measure the 222Rn concentrations in artificial burrows over a period of approximately one year (July 2009 to June 2010). Instrumented measurements of burrow air and soil pore gas were also conducted in October 2009.
The data result from a study funded by NERC-CEH and the England & Wales Environment Agency.
|Type of data||Field study|
|Quality||Methodologies for 222Rn measurements are described in Beresford N.A. et al. (2012). Soil samples were taken to a depth of 50 cm from adjacent to each burrow at the end of the study for subsequent gamma-analyses. Samples we dried at 80°C, homogenised and weighed into c. 950 ml plastic containers. The containers were sealed and left for 25 d to allow secular equilibrium to be reached. The samples were subsequently counted on hyper-pure Ge-detectors for 4 d. The resultant spectra were analysed using the Canberra Apex-Gamma software package. The detectors are calibrated using certified standards, containing mixtures of gamma-emitting radionuclides, which are mixed into matrix of different densities. Methodology UKAS accredited. See http://bit.ly/1bcfir8 for the Radon Dose Calculator spreadsheet used in this work.|
|Sample type||Soil; Estimates of burrow air 222Rn activity concentrations|
Freely available from the CEH Information Gateway: http://dx.doi.org/10.5285/2641515F-5B76-445C-A936-1DA51BF365AD
|Key reference sources|
|Figure information||1) Monitor burrow air gas; 2) Passive detector; 3) Artificial burrow just after being established (Photographs: Cath Barnett, NERC-CEH)|
united_kingdom , natural_radionuclides , infoex
Prepared by STAR NoE