Potassium alum and aluminum sulfate micro-inclusions in polar ice from Dome Fuji, East Antarctica
Potassium alum and aluminum sulfate micro-inclusions in polar ice from Dome Fuji, East Antarctica
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南极洲东部富士穹顶极地冰中的钾明矾和硫酸铝微包裹体
DOI：
10.1016/j.polar.2013.11.003
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发表时间：
2014
期刊：
影响因子：
1.8
通讯作者：
Hideaki Motoyama
中科院分区：
文献类型：
--
作者：
Hiroshi Ohno;Yoshinori Iizuka;Shinichiro Horikawa;Toshimitsu Sakurai;Takeo Hondoh;Hideaki Motoyama
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.
