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Determination of Carbon-14 in environmental level, solid reference materials.

Blowers, P*; Caborn, J*; Dell, T*; Gingell, T*; Harms, A; Long, S*; Sleep, D*; Stewart, C*; Walker, J*; Warwick, P E* (2011) Determination of Carbon-14 in environmental level, solid reference materials. Appl. Radiat. Isot., 69 (10). pp. 1323-1329.

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Abstract

An intercomparison exercise to determine the 14C activity concentrations in a range of solid, environmental level materials was conducted between laboratories in the UK. IAEA reference materials, C2, C6 and C7, and an in-house laboratory QA material
were dispatched in 2006 to ten laboratories comprising of members of the Analyst Informal Working Group (AIWG) and one other invited party. The laboratories performed the determinations using a number of techniques, and using the results each one was evaluated in terms of levels of precision, sensitivity and limits of detection. The results of the study show that all techniques are capable of successfully analysing 14C in environmental level materials however a shortage of certified environmental reference materials exists. The suitability of the IAEA reference materials and other material for use as reference materials was also assessed.

Item Type: Article
Subjects: Ionising Radiation
Ionising Radiation > Radioactivity
Identification number/DOI: 10.1016/j.apradiso.2011.01.011
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/5271

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