Application of micro-X-ray fluorescence to chemical mapping of polar ice

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Abstract:

Synchrotron-based micro-X-ray fluorescence (XRF) equipment has been used to analyze impurities in polar ice. A customized sample holder has been developed and the XRF equipment has been adapted with a thermal control system to keep samples unaltered during analyses. Artificial ice samples prepared from ultra-pure water were analyzed to investigate possible contamination and/or experimental artefacts. Analyses of polar ice from Antarctica (Dome C and Vostok) confirm this XRF technique is non-destructive and sensitive. Experiments can be reproduced to confirm or refine results by focusing on interesting spots such as crystal grain boundaries or specific inclusions. Integration times and resolution can be adjusted to optimize sensitivity. Investigation of unstable particles is possible due to the short analysis time. In addition to identification of elements in impurities, XRF is able to determine their speciations. The accuracy and reliability of the results confirm the potential of this technique for research in glaciology.

Document Type: Research Article

DOI: http://dx.doi.org/10.3189/172756505781829340

Publication date: March 1, 2005

More about this publication?
  • The Journal of Glaciology is published six times per year. It accepts submissions from any discipline related to the study of snow and ice. All articles are peer reviewed. The Journal is included in the ISI Science Citation Index.
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