English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Gaseous elemental mercury (GEM) and Rn-222, 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 Rn-222 concentrations were identified. GEM correlated with Rn-222 in 41 of the events and was constant during the remaining events without significant correlation. The average GEM/Rn-222 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 Rn-222 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

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

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