A Novel Fast Ion Chromatographic Method for the Analysis of Fluoride in Antarctic Snow and Ice

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• 作者：Mirko Severi ; Silvia Becagli ; Daniele Frosini ; Miriam Marconi ; Rita Traversi ; Roberto Udisti
• 刊名：Environmental Science & Technology
• 出版年：2014
• 出版时间：February 4, 2014
• 年：2014
• 卷：48
• 期：3
• 页码：1795-1802
• 全文大小：353K
• ISSN：1520-5851

文摘

Ice cores are widely used to reconstruct past changes of the climate system. For instance, the ice core record of numerous water-soluble and insoluble chemical species that are trapped in snow and ice offer the possibility to investigate past changes of various key compounds present in the atmosphere (i.e., aerosol, reactive gases). We developed a new method for the quantitative determination of fluoride in ice cores at sub-渭g L^鈥? levels by coupling a flow injection analysis technique with a fast ion chromatography separation based on the 鈥渉eart cut鈥?column switching technology. Sensitivity, linear range (up to 60 渭g L^鈥?), reproducibility, and detection limit (0.02 渭g L^鈥?) were evaluated for the new method. This method was successfully applied to the analysis of fluoride at trace levels in more than 450 recent snow samples collected during the 1998鈥?999 International Trans-Antarctica Scientific Expedition traverse in East Antarctica at sites located between 170 and 850 km from the coastline.