Proxies and measurement techniques for mineral dust in Antarctic ice cores
| Autor: | Barbara Delmonte, Dietmar Wagenbach, Fabrice Lambert, Anna Wegner, Paolo Gabrielli, Valter Maggi, Roberto Udisti, Eric W. Wolff, Patrik R Kaufmann, Vania Gaspari, Urs Ruth, Hubertus Fischer, F. Marino, Jean-Robert Petit, Carlo Barbante, Matthias Bigler |
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| Přispěvatelé: | Ruth, U, Barbante, C, Bigler, M, Delmonte, B, Fischer, U, Gabrielli, P, Gaspari, V, Kaufmann, P, Lambert, F, Maggi, V, Marino, F, Petit, J, Udisti, R, Wagenbach, D, Wegner, A, Wolff, E |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Time Factors
010504 meteorology & atmospheric sciences GEO/04 - GEOGRAFIA FISICA E GEOMORFOLOGIA Mineralogy Antarctic Regions ice cores dust ICPMS particle counting chemistry 010501 environmental sciences Mineral dust 01 natural sciences Mass Spectrometry OCEAN Ice core Ice age Deglaciation Environmental Chemistry Particle Size Holocene 0105 earth and related environmental sciences Inhalation Exposure Minerals 8 GLACIAL CYCLES Ice Dust MASS-SPECTROMETRY General Chemistry EPICA 13. Climate action Elemental analysis Aeolian processes Environmental Pollutants Inductively coupled plasma DOME-C Environmental Monitoring |
| Zdroj: | Environmental science & technology 42 (2008): 5675–5681. info:cnr-pdr/source/autori:Ruth U., Barbante C., Bigler M., Delmonte B., Fischer H., Gabrielli P., Gaspari V., Kaufmann P., Lambert F., Maggi V., Marino F., Petit J.-R., Udisti R., Wagenbach D., Wegner A., Wolff E. W./titolo:Proxies and measurement techniques for mineral dust in Antarctic ice cores./doi:/rivista:Environmental science & technology/anno:2008/pagina_da:5675/pagina_a:5681/intervallo_pagine:5675–5681/volume:42 |
| Popis: | 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. © 2008 American Chemical Society. |
| Databáze: | OpenAIRE |
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