Ruth, Urs; Barbante, Carlo; Bigler, Matthias; Delmonte, Barbara; Fischer, Hubertus; Gabrielli, Paolo; Gaspari, Vania; Kaufmann, Patrik; Lambert, Fabrice; Maggi, Valter; Marino, Federica; Petit, Jean-Robert; Udisti, Roberto; Wagenbach, Dietmar; Wegner, Anna; Wolff, Eric W. (2008). Proxies and Measurement Techniques for Mineral Dust in Antarctic Ice Cores. Environmental Science & Technology, 42 (15), pp. 5675-5681. 10.1021/es703078z
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To improve quantitative interpretation of ice core aeolian dust records, a systematic methodological comparison was made. This involved methods for water-insoluble particle counting (Coulter counter and laser-sensing particle detector), soluble ion analysis (ion chromatography and continuous flow analysis), elemental analysis (inductively coupled plasma mass spectroscopy at pH 1 and after full acid digestion), and water-insoluble elemental analysis (proton induced X-ray emission). Antarctic ice core samples covering the last deglaciation from the EPICA Dome C (EDC) and the EPICA Dronning Maud Land (EDML) cores were used. All methods correlate very well among each other, but the ratios of glacial age to Holocene concentrations, which are typically a factor ∼100, differ between the methods by up to a factor of 2 with insoluble particles showing the largest variability. The recovery of ICP-MS measurements depends on the digestion method and is different for different elements and during different climatic periods. EDC and EDML samples have similar dust composition, which suggests a common dust source or a common mixture of sources for the two sites. The analyzed samples further reveal a change of dust composition during the last deglaciation.
Item Type: |
Journal Article (Original Article) |
|---|---|
PHBern Contributor: |
Bigler, M. |
ISSN: |
0013-936X |
Language: |
English |
Submitter: |
Matthias Bigler |
Date Deposited: |
25 Jan 2024 11:09 |
Last Modified: |
28 Jan 2024 11:55 |
Publisher DOI: |
10.1021/es703078z |
PHBern DOI: |
10.57694/7187 |
URI: |
https://phrepo.phbern.ch/id/eprint/7187 |
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