Bias and measurement errors in radioactivity data from four European radiation research laboratories

McGee, E.J.; Colgan, P.A.; Keatinge, M.; Horrill, A.D.; Kennedy, V.H.; Johanson, K.J.; Aarkrog, A.; Nielsen, S.P.. 1992 Bias and measurement errors in radioactivity data from four European radiation research laboratories. Analyst, 117 (6). 941-945. 10.1039/AN9921700941

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Abstract/Summary

Four radiation research laboratories participated in an interlaboratory comparison exercise to assess precision in the measurement of radionuclide concentrations. Each laboratory was required to report results for 137Cs, 134Cs and 40K in accordance with their usual procedures. A normal probability plot of the pooled data showed ten of the 161 readings to be obvious outliers and seven of these were attributed to one of the laboratories. One laboratory consistently overestimated relative to the global mean, another laboratory consistently underestimated while the other two showed positive and negative bias dependent on isotope. Both bias and measurement errors were found to increase in the order 137Cs, 134Cs, 40K. A need for greater standardization of analytical techniques was identified.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1039/AN9921700941
Programmes:	CEH Programmes pre-2009 publications > Other
UKCEH and CEH Sections/Science Areas:	_ Pre-2000 sections
ISSN:	0003-2654
Additional Keywords:	radioecology
NORA Subject Terms:	Ecology and Environment Data and Information
Date made live:	08 Mar 2013 14:33 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/21297

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