The characterisation of an intertidal sediment from the cumbrian coastline

I. Adsley, D. Andrew, D. Arnold, R. Bojanowski, Y. Bourlat, A.R. Byrne, M.-T. Crespo, J. Desmond, P. De Felice, A. Fazio, J.L. Gascón, R.S. Grieve, A.S. Holmes, S.M. Jerome, M. Korun, M. Magnoni, K.J. Odell, D.S. Popplewell, I. Poupaki, G. SuttonJ. Toole, M.W. Wakerley, H. Wershofen, M.J. Woods, M.J. Youngman

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The characterisation of an intertidal sediment, containing enhanced levels of radioactivity, collected from the Cumbrian coast of the U.K. by the Laboratory of the Government Chemist for the Department of the Environment is described. A wide variety of radiochemical and instrumental techniques were used including α-spectrometry, β-counting, liquid scintillation counting, γ-spectrometry, X-ray spectrometry and mass spectrometry. To derive mean values of the activity concentrations of radionuclides in the material, use was made of the technique developed by Woods and Munster. This technique first critically evaluates data for technical suitability. Then, to avoid excessive manipulation of data, calculation of the weighted (the statistical weighting is the inverse of the squared uncertainties, limited so that no one result contributes more than 50%) and unweighted means is performed, along with a χ2test. If the value of χ2/(n-1) 2 determinations, 3 with 2 determinations and 2 with single determinations. Emphasis is placed where data appeared to be discrepant (e.g. 4K and t37Cs), where widely different measurement techniques were employed (e.g. the actinides), where there were analytical 'difficulties' (e.g. uranium) or where the radionuclide is not commonly measured (e.g.155Eu,237Np and241Pu). The material is now available to laboratories as a reference material and it is anticipated that it will be used to validate existing procedures and to research new methods of analysis.
Original languageEnglish
Pages (from-to)1295 - 1300
Number of pages6
JournalApplied Radiation and Isotopes
Issue number9-11
Publication statusPublished - Aug 1998
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Radiation

Cite this

Adsley, I., Andrew, D., Arnold, D., Bojanowski, R., Bourlat, Y., Byrne, A. R., ... Youngman, M. J. (1998). The characterisation of an intertidal sediment from the cumbrian coastline. Applied Radiation and Isotopes, 49(9-11), 1295 - 1300.