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Constituent elements of insoluble and non-volatile particles during the Last Glacial Maximum exhibited in the Dome Fuji (Antarctica) ice core

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Title: Constituent elements of insoluble and non-volatile particles during the Last Glacial Maximum exhibited in the Dome Fuji (Antarctica) ice core
Authors: Iizuka, Yoshinori Browse this author →KAKEN DB
Miyake, Takayuki Browse this author
Hirabayashi, Motohiro Browse this author
Suzuki, Toshitaka Browse this author
Matoba, Sumito Browse this author →KAKEN DB
Motoyama, Hideaki Browse this author
Fujii, Yoshiyuki Browse this author
Hondoh, Takeo Browse this author
Issue Date: Jun-2009
Publisher: International Glaciological Society
Journal Title: Journal of Glaciology
Volume: 55
Issue: 191
Start Page: 552
End Page: 562
Publisher DOI: 10.3189/002214309788816696
Abstract: In order to find environmental signals based on the dust and calcium-ion concentrations in ice cores, we determine the constituent elements of residue particles obtained after melting ice samples. We have designed a sublimating system that operates at -45℃, below the eutectic temperatures of major salts. This system permits us to obtain a great many non-volatile particles. After studying the non-volatile particles, we immersed them in water to remove soluble particles and compounds. We thereby analyzed a total of 1272 residue particles (from the melted sample), 2418 non-volatile particles (after sublimation) and 1463 insoluble particles taken from five sections of Last Glacial Maximum ice from the Dome Fuji (Antarctica) ice core. Their constituent elements were determined by scanning electron microscopy/energy-dispersive X-ray spectrometry (SEM-EDS) and compared to the dust, calcium-ion and sodium-ion concentrations measured by ion chromatography. Our results indicate that >99.9% of the insoluble particles contain silicon but no sulfur, nitrogen or chlorine. A significant number of the non-volatile particles, however, contain sulfur and chlorine. We conclude that insoluble dust consists mostly of silicate, that almost all calcium ions originate from calcium sulfate and that almost all sodium ions originate from sodium sulfate and sodium chloride.
Rights: © 2009 International Glaciological Society
Type: article
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 飯塚 芳徳

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