极地研究

极地研究 ›› 2003, Vol. 14 ›› Issue (1-English): 41-47.

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Anthropogenic trace metals in an ice core at Vestfonna, Svalbard, Norway

 Sumito Matoba1,2, Hideaki Motoyama1, Hideki Narita3,4 and Okitsugu Watanabe1   

  1. 1 National Institute of Polar Research, Tokyo 173-8506, Japan;
    2 National Institute for Environmental Studies, Ibaraki 305-8506, Japan;
    3 Institute of Low Temperature Science, Sapporo 060-0819, Japan;
    4 Research Institute for Humanity and Nature, Kyoto 602-08, Japan
  • 出版日期:1953-03-30 发布日期:1953-03-30
  • 通讯作者: Sumito Matoba

Anthropogenic trace metals in an ice core at Vestfonna,Svalbard, Norway

Sumito Matoba1,2, Hideaki Motoyama1, Hideki Narita3,4 and Okitsugu Watanabe1   

  1. 1 National Institute of Polar Research, Tokyo 173-8506, Japan;
    2 National Institute for Environmental Studies, Ibaraki 305-8506, Japan;
    3 Institute of Low Temperature Science, Sapporo 060-0819, Japan;
    4 Research Institute for Humanity and Nature, Kyoto 602-08, Japan
  • Online:1953-03-30 Published:1953-03-30
  • Contact: Sumito Matoba

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摘要：

A 211 m depth ice core observation was carried out at the top of the Vestfonna Ice Cap in Nordaustlandet, Svalbard, Norway in 1995. Chronology of the ice core was determined by tritium analysis and comparison to the volcanic eruption of Laki; the resulting accumulation rate is 0.34-0.35 m water eq.·yr-1 for the last 400 year. Concentrations of Al, V, Cr, Fe, Cu, Zn, As, Ag, Cd, Pb and U in an ice core have been determined by an inductively coupled plasma mass spectrometry (ICP MS) with a desolvated micro concentric nebulizer, which is a recent development and can achieve high sensitivity with low uptake rate of 60 mL/min. The concentrations of Pb, Cu, and Zn had increased from 1940s declined from 1970s to present. However, the profiles of Pb, Cu, and Zn were different and they seem to be influenced by the difference of sources. Since the ratios between Cu, Pb, and Zn in Svalbard is similar to that in French Alps, the source area of these elements is estimated to be Europe.

关键词: Ice core, heavy metal, Svalbard, ICP-MS

Abstract:

A 211 m depth ice core observation was carried out at the top of the Vestfonna Ice Cap in Nordaustlandet, Svalbard, Norway in 1995. Chronology of the ice core was determined by tritium analysis and comparison to the volcanic eruption of Laki; the resulting accumulation rate is 0.34-0.35 m water eq.·yr-1 for the last 400 year. Concentrations of Al, V, Cr, Fe, Cu, Zn, As, Ag, Cd, Pb and U in an ice core have been determined by an inductively coupled plasma mass spectrometry (ICP MS) with a desolvated micro concentric nebulizer, which is a recent development and can achieve high sensitivity with low uptake rate of 60 mL/min. The concentrations of Pb, Cu, and Zn had increased from 1940s declined from 1970s to present. However, the profiles of Pb, Cu, and Zn were different and they seem to be influenced by the difference of sources. Since the ratios between Cu, Pb, and Zn in Svalbard is similar to that in French Alps, the source area of these elements is estimated to be Europe.

Key words: Ice core, heavy metal, Svalbard, ICP-MS