Potassium alum and aluminum sulfate micro-inclusions in polar ice from Dome Fuji,East Antarctica |
| |
| Institution: | 1. National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan;2. Institute of Low Temperature Science, Hokkaido University, N19 W8, Sapporo 060-0819, Japan;3. Department of Civil and Environmental Engineering, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090-8507, Japan;4. Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University D2-2(510), Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan;5. Institute for Laser Technology, 1-8-4 Utsubo-honmachi, Nishi-ku, Osaka 565-0871, Japan |
| |
| Abstract: | Water-soluble trace constituents affect the physicochemical properties of polar ice. Their structural distribution provides important insights into the formation history of ice and inclusions. We report the first finding of KAl(SO4)2·12H2O (potassium alum) and Al2(SO4)3·nH2O (aluminum sulfate) micro-inclusions in the Dome Fuji ice core, East Antartica, using a micro-Raman technique. Eutectic temperatures of these water-soluble species determined using thermal analysis were ?0.4 °C for potassium alum and ?8.0 °C for aluminum sulfate. Although the formation process of the aluminum-bearing sulfates remains unclear, the occurrence of these salts largely depends on ice depth. |
| |
| Keywords: | Antarctica Ice core Aerosol Potassium alum Aluminum sulfate |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
