CCQM-P151 final report pilot study CCQM P151 halocarbons in dry whole air

TitleCCQM-P151 final report pilot study CCQM P151 halocarbons in dry whole air
Publication TypeJournal Article
Year of Publication2014
AuthorsRhoderick G., Guenther F., Duewer D., Lee J., Kim J.S, Hall B., Weiss R., Harth C, Reimann S., Vollmer M.
JournalMetrologia
Volume51
Date Published2014/12
Type of ArticleArticle
ISBN Number0026-1394
Accession NumberWOS:000349820700050
Abstract

The growing awareness of climate change/global warming and continuing concerns regarding stratospheric ozone depletion will require future measurements and standards for many compounds, in particular halocarbons that are linked to these issues. In order to track and control the emissions of these species globally in the atmosphere, it is necessary to demonstrate measurement equivalence at the highest levels of accuracy for assigned values of standards. This report describes the results of a pilot study between National Metrology Institutes and atmospheric research laboratories for several of the more important halocarbons at atmospheric concentration levels. The comparison includes the chlorofluorocarbons (CFCs) dichlorodifluoromethane (CFC 12), trichlorofluoromethane (CFC 11), and 1,1,2- trichlorotrifluoroethane (CFC 113); the hydrochlorofluorocarbons (HCFCs) chlorodifluoromethane (HCFC 22) and 1-chloro-1,1-difluoroethane (HCFC 142b); and the hydrofluorocarbon (HFC) 1,1,1,2 tetrafluoroethane (HFC 134a), all in a dried whole air sample. The objective of this key comparison is to compare the measurement capabilities of the participants for these halocarbons at trace atmospheric levels.

Short TitleMetrologia
Student Publication: 
No