Seasonal variability of crustal and marine trace elements in the aerosol at Neumayer station, Antarctica

被引：70

作者：

Weller, Rolf ^{[1
]}

Woeltjen, Janina ^{[1
]}

Piel, Claudia ^{[1
]}

Resenberg, Rosa ^{[1
]}

Wagenbach, Dietmar ^{[2
]}

Koenig-Langlo, Gert ^{[1
]}

Kriews, Michael ^{[1
]}

机构：

[1] Alfred Wegener Inst Polar & Marine Res, D-27570 Bremerhaven, Germany

[2] Heidelberg Univ, Inst Umweltphys, D-69120 Heidelberg, Germany

来源：

TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY | 2008年 / 60卷 / 05期

关键词：

D O I：

10.1111/j.1600-0889.2008.00372.x

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Atmospheric trace element concentrations were measured from March 1999 to December 2003 at the Air Chemistry Observatory of the German Antarctic station Neumayer, by inductively coupled plasma-quadrupol mass spectrometry (ICP-QMS) and ion chromatography (IC). This continuous five-year long record derived from weekly aerosol sampling revealed a distinct seasonal summer maximum for elements linked with mineral dust entry (Al, La, Ce, Nd) and a winter maximum for the mostly sea salt derived elements Li, Na, K, Mg, Ca and Sr. The relative seasonal amplitude was around 1.7 and 1.4 for mineral dust (La) and sea salt aerosol (Na), respectively. On average, a significant deviation regarding mean ocean water composition was apparent for Li, Mg and Sr, which could hardly be explained by mirabilite precipitation on freshly formed sea ice. In addition, we observed all over the year, a not clarified high variability of element ratios Li/Na, K/Na, Mg/Na, Ca/Na and Sr/Na. We found an intriguing co-variation of Se concentrations with biogenic sulphur aerosols (methane sulphonate and non-sea salt sulphate), indicating a dominant marine biogenic source for this element, linked with the marine biogenic sulphur source.

引用

页码：742 / 752

页数：11

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