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Determination of the absolute accuracy of UK chamber facilities used in measuring methane emissions from livestock

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Gardiner, T. D., Coleman, M. D., Innocenti, F., Tompkins, J., Connor, A., Garnsworthy, P. C., Moorby, J. M., Reynolds, C. K., Waterhouse, A. and Wills, D. (2015) Determination of the absolute accuracy of UK chamber facilities used in measuring methane emissions from livestock. Measurement, 66. pp. 272-279. ISSN 0263-2241

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To link to this item DOI: 10.1016/j.measurement.2015.02.029

Abstract/Summary

Respiration chambers are one of the primary sources of data on methane emissions from livestock. This paper describes the results from a coordinated set of chamber validation experiments which establishes the absolute accuracy of the methane emission rates measured by the chambers, and for the first time provides metrological traceability to international standards, assesses the impact of both analyser and chamber response times on measurement uncertainty and establishes direct comparability between measurements made across different facilities with a wide range of chamber designs. As a result of the validation exercise the estimated combined uncertainty associated with the overall capability across all facilities reduced from 25.7% (k = 2, 95% confidence) before the validation to 2.1% (k = 2, 95% confidence) when the validation results are applied to the facilities’ data.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Agriculture, Policy and Development > Food Production and Quality Division > Animal, Dairy and Food Chain Sciences (ADFCS)
ID Code:39634
Uncontrolled Keywords:Respiration chambers Methane emissions Livestock emissions Calibration Traceability
Publisher:Elsevier

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