Oxidation of gaseous elemental mercury to gaseous divalent mercury during 2003 Polar Sunrise at Ny-Alesund. (Articolo in rivista)

Type
Label
  • Oxidation of gaseous elemental mercury to gaseous divalent mercury during 2003 Polar Sunrise at Ny-Alesund. (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/es050965o (literal)
Alternative label
  • Sprovieri F. (1), Pirrone N. (1), Landis M.S. (2), Stevens R.K. (3) (2005)
    Oxidation of gaseous elemental mercury to gaseous divalent mercury during 2003 Polar Sunrise at Ny-Alesund.
    in Environmental science & technology
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sprovieri F. (1), Pirrone N. (1), Landis M.S. (2), Stevens R.K. (3) (literal)
Pagina inizio
  • 9156 (literal)
Pagina fine
  • 9165 (literal)
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  • 39 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 10 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 23 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) CNR-Institute for Atmospheric Pollution, 87036 Rende, Italy; 2) USEPA, Research and Development, Research Triangle Park, North Carolina, USA; 3) Florida Department Environmental Protection at USEPA, Research Triangle Park, North Carolina, USA; (literal)
Titolo
  • Oxidation of gaseous elemental mercury to gaseous divalent mercury during 2003 Polar Sunrise at Ny-Alesund. (literal)
Abstract
  • The springtime phenomenon, termed as the mercury depletion event (MDE), during which elemental gaseous mercury (Hg-0) may be converted to a reactive form that accumulates in polar ecosystems, first noted in the Arctic, has now been observed at both poles and results in an important removal pathway for atmospheric mercury. An intensive international springtime mercury experiment was performed at Ny-Alesund, Spitsbergen, from 19 April to 13 May 2003 to study the atmospheric mercury chemistry in the Arctic environment and, in particular, the MDEs which occurred in the arctic boundary layer after polar sunrise. Automated ambient measurements of Hg-0, divalent reactive gaseous mercury (RGM) and fine particulate mercury (< 2.5 mu m) (Hg(p)) were made at the Zeppelin Mountain Station (ZMS). During the experiment mercury concentrations in the lower atmosphere varied in synchrony with ozone levels throughout the Spring. Hg-0 concentrations ranged from background levels (similar to 1.6 ng m(-3)) to undetectable values (< 0.1 ng m(-3)) during the first and major MDE, while RGM data showed an opposite trend during the sampling period with concentrations increasing dramatically to a peak of 230 pg m(-3), synchronous with the depletion of Hg-0. The results of a meteorological transport analysis indicate the MDEs observed at ZMS were primarily due to air masses being transported in from open water areas in the Arctic Ocean that were already depleted of Hg-0 when they arrived and not due to in-situ oxidation mechanisms. (literal)
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