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Interlaboratory comparison of fluorocarbons-11, -12, methylchloroform and nitrous oxide measurementsMeasurements conducted by 19 participating laboratories were considered in the reported interlaboratory comparison study. The results show that there is considerable disagreement among laboratories regarding the absolute concentrations of all four trace gases (CCl3F, CCl2F2, H3CCl3, N2O). The magnitude of this disagreement is discussed. Laboratories in Group II showed considerable disagreement among themselves. Their results were scattered within large intervals of concentration. Laboratories in Group I (using common standards) were in excellent (+ or - 5%) agreement among themselves. A systematic disagreement was noted between Groups I and II laboratories. Generally, the mean values of concentrations determined from the measurements of Group II laboratories were lower than the mean values reported by Group I laboratories.
Document ID
19810059756
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rasmussen, R. A.
(Oregon Graduate Center for Study and Research Beaverton, OR, United States)
Khalil, M. A. K.
(Oregon Graduate Center Beaverton, OR, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1981
Publication Information
Publication: Atmospheric Environment
Volume: 15
Issue: 9, 19
Subject Category
Environment Pollution
Accession Number
81A44160
Distribution Limits
Public
Copyright
Other

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