222Rn-calibrated mercury fluxes from terrestrial surface of southern Africa

Simple item page
dc.contributor.authorSlemr, Fen_AU
dc.contributor.authorBrunke, EGen_AU
dc.contributor.authorWhittlestone, Sen_AU
dc.contributor.authorZahorowski, Wen_AU
dc.contributor.authorEbinghaus, Ren_AU
dc.contributor.authorKock, HHen_AU
dc.contributor.authorLabuschagne, Cen_AU
dc.date.accessioned2014-11-26T03:56:43Zen_AU
dc.date.available2014-11-26T03:56:43Zen_AU
dc.date.issued2013-01-01en_AU
dc.date.statistics2014-11-26en_AU
dc.description.abstractGaseous elemental mercury (GEM) and 222Rn, a radioactive gas of primarily terrestrial origin with a half-life of 3.8 days, have been measured simultaneously at Cape Point, South Africa, since March 2007. Between March 2007 and December 2011, altogether 191 events with high 222Rn concentrations were identified. GEM correlated with 222Rn in 94 of the events and was constant during almost all the remaining events without significant correlation. The average GEM / 222Rn flux ratio of all events including the non-significant ones was −0.0001 with a standard error of ±0.0030 pg mBq−1. Weighted with the event duration, the average GEM / 222Rn flux ratio was −0.0048 ± 0.0011 pg mBq−1. With an emission rate of 1.1 222Rn atoms cm−2 s−1 and a correction for the transport time, this flux ratio corresponds to a radon-calibrated flux of about −0.54 ng GEM m−2 h−1 with a standard error of ±0.13 ng GEM m−2 h−1 (n = 191). With wet deposition, which is not included in this estimate, the terrestrial surface of southern Africa seems to be a net mercury sink of about −1.55 ng m−2 h−1. The additional contribution of an unknown but presumably significant deposition of reactive gaseous mercury would further increase this sink.© 2013, European Geosciences Unionen_AU
dc.identifier.citationSlemr, F., Brunke, E. G., Whittlestone, S., Zahorowski, W., Ebinghaus, R., Kock, H. H., & Labuschagne, C. (2013). 222rn-calibrated mercury fluxes from terrestrial surface of southern africa. Atmospheric Chemistry and Physics, 13(13), 6421-6428. doi:10.5194/acp-13-6421-2013en_AU
dc.identifier.govdoc4984en_AU
dc.identifier.issn1680-7316en_AU
dc.identifier.issue13en_AU
dc.identifier.journaltitleAtmospheric Chemistry and Physicsen_AU
dc.identifier.pagination6421-6428en_AU
dc.identifier.urihttp://dx.doi.org/10.5194/acp-13-6421-2013en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6078en_AU
dc.identifier.volume13en_AU
dc.language.isoenen_AU
dc.publisherEuropean Geosciences Unionen_AU
dc.subjectRadonen_AU
dc.subjectMercuryen_AU
dc.subjectAfricaen_AU
dc.subjectAtomsen_AU
dc.subjectDepositionen_AU
dc.subjectEmissionen_AU
dc.title222Rn-calibrated mercury fluxes from terrestrial surface of southern Africaen_AU
dc.typeJournal Articleen_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
acp-13-6421-2013.pdf
Size:
979.51 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles