Arctic mercury depletion events at two elevations as observed at the Zeppelin Station and Dirigibile Italia, Ny-Alesund, spring 2002

被引：10

作者：

Berg, T

Sommar, J

Wängberg, I

Gardfeldt, K

Munthe, J

Schroeder, B

机构：

[1] Norwegian Inst Air Res, NILU, N-2027 Kjeller, Norway

[2] Gothenburg Univ, Dept Inorgan Chem, S-41296 Gothenburg, Sweden

[3] IVL Swedish Environm Res Inst, S-40258 Gothenburg, Sweden

[4] Environm Canada, Toronto, ON M3H 5T4, Canada

来源：

JOURNAL DE PHYSIQUE IV | 2003年 / 107卷

关键词：

D O I：

10.1051/jp4:20030265

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Speciation of mercury in the atmosphere (GEM, RGM) and snow (Hg-tot) has been carried out at two altitudes (474 and 12 m a.s.l.) at Ny-Angstromlesund, Spitzbergen. The concentration of GEM was in the range <0.1 to 2.2 ng m(-3) during the campaign. At the lower altitude, the GEM concentration was generally highest and showed a higher variability. RGM and total mercury in snow were anti-correlated with GEM. RGM sampled without teflon grid exhibited higher concentrations than those collected with filter, using manual denuders. Additionally, evidence for photo-induced emissions of Hg-0 from the surface snow was obtained.

引用

页码：151 / 154

页数：4

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