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2009
Krachler, M., Fisher, D., Shotyk, W., Zheng, J.
Abstract: Despite its growing environmental significance, there are no detailed historical records of atmospheric As deposition for the Northern Hemisphere. Having overcome the severe analytical challenges in measuring As in polar ice, and using an Arctic ice core representing similar to 16 ka of...
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2002
Ooi, S., van der Knaap, W. O., Hansen, T. S., Rom, W., Lange, T., Shotyk, W., Heinemeier, J., Appleyby, P. G., Lohse, C., Goodsite, M. E.
ABSTRACT. Peat deposits in Greenland and Denmark were investigated to show that high-resolution dating of these archives of atmospheric deposition can be provided for the last 50 years by radiocarbon dating using the atmospheric bomb pulse. 14C was determined in macrofossils from sequential one...
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Predominance of industrial Pb in recent snow (1994-2004) and ice (1842-1996) from Devon Island, Arctic Canada
Download2005
Koerner, R., Shotyk, W., Zdanowicz, C., Zheng, J., Fisher, D., Krachler, M.
Abstract: Atmospheric Pb contamination was studied using snow and ice from the Canadian arctic. Forty-five samples representing the past ten years of snow accumulation on Devon Island contain an average of 45.2 pg/g of Pb but only 0.43 pg/g of Sc. The average ratio of Pb to Sc (105) is far...
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1994
Abstract: Secondary ion mass spectrometry (SIMS) is the mass spectrometry of atomic species which are emitted when a solid surface is bombarded by an energetic primary ion beam. By continually bombarding the surface of the sample with the ion beam, the atoms making up the material being studied...