222Rn calibrated mercury fluxes from terrestrial surfaces of southern Africa derived from observations at Cape Point, South Africa

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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.accessioned2015-12-28T02:13:48Zen_AU
dc.date.available2015-12-28T02:13:48Zen_AU
dc.date.issued2012-09-23en_AU
dc.date.statistics2015-11-19en_AU
dc.descriptionProceedings of the 16th International Conference on Heavy Metals in the Environmenten_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 2009 altogether 59 events with high 222Rn concentrations were identified. GEM correlated with 222Rn in 41 of the events and was constant during the remaining events without significant correlation. The average GEM/222Rn emission ratio of all events was -0.0047 ± 0.0054 pg mBq-1, with ± 0.0054 being the standard error of the average. With an emission rate of 1.1 222Rn atoms cm-2 s-1 and a correction for the transport duration, this emission ratio corresponds to a radon calibrated flux of about -0.53 ± 0.62 ng m-2 h-1 which is statistically not distinguishable from zero. With wet deposition, which is not included in this estimate, the terrestrial surface of southern Africa appears to be a net mercury sink. © Owned by the authors, published by EDP Sciences, 2013en_AU
dc.identifier.articlenumber17005en_AU
dc.identifier.citationSlemr, F., Brunke, E. G., Whittlestone, S., Zahorowski, W., Ebinghaus, R., Kock, H. H., and Labuschagne, C., (2013). 222Rn calibrated mercury fluxes from terrestrial surfaces of southern Africa derived from observations at Cape Point, South Africa. Paper presented to the 16th International Conference on Heavy Metals in the Environment (ICHMET), 23-27 September 2012, Rome Italy. In E3S Web of Conferences, 1, 17005. doi:10.1051/e3sconf/20130117005.en_AU
dc.identifier.conferenceenddate27 September 2012en_AU
dc.identifier.conferencename16th International Conference on Heavy Metals in the Environment (ICHMET)en_AU
dc.identifier.conferenceplaceRome, Italyen_AU
dc.identifier.conferencestartdate23 September 2012en_AU
dc.identifier.govdoc6299en_AU
dc.identifier.issneISSN: 2267-1242en_AU
dc.identifier.journaltitleE3S Web of Conferencesen_AU
dc.identifier.urihttps://doi.org/10.1051/e3sconf/20130117005en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6497en_AU
dc.identifier.volume1en_AU
dc.language.isoenen_AU
dc.publisherEDP Sciencesen_AU
dc.subjectHeavy metalsen_AU
dc.subjectMercuryen_AU
dc.subjectEmissionen_AU
dc.subjectDepositionen_AU
dc.subjectSouth Africaen_AU
dc.subjectRadonen_AU
dc.title222Rn calibrated mercury fluxes from terrestrial surfaces of southern Africa derived from observations at Cape Point, South Africaen_AU
dc.typeConference Paperen_AU
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