Dronning Maud Land, Antarctica, Ice Core, 1991 and 1992

Major ion concentration values (Na, Mg, Ca, Cl, NO3, SO4, MSA) were
analyzed from a 20-meter ice core drilled in Dronning Maud Land,
Antarctica (location - 65 01' East, 75 00' South, elevation - 2,900 m
a.s.l.). The core was drilled during the austral summer
1991-1992. Major ion analysis was by ion chromatography. The anions
were analyzed on a Dionex AS4A column; the cations on a Dionex CS12
column and MSA on a Dionex AS4 column. All used suppressed chromatography. Using established protocols to prevent contamination,
the core was processed into 3-centimeter pieces by the Glacier
Research Group at the University of New Hampshire's Climate Change
Research Center. The 3-cm pieces were kept frozen until major ion
analysis.

本数据集对取自南极毛德皇后地（Dronning Maud Land）的一根20米冰芯中的主要离子浓度（Na、Mg、Ca、Cl、硝酸根(NO3)、硫酸根(SO4)、甲基磺酸(MSA)）进行了分析。该冰芯的采样点位为东经65°01′、南纬75°00′，海拔2900米，于1991-1992年南极夏季钻探获取。主要离子分析采用离子色谱法完成：阴离子采用戴安（Dionex）AS4A色谱柱进行分析，阳离子采用戴安（Dionex）CS12色谱柱进行分析，甲基磺酸（MSA）采用戴安（Dionex）AS4色谱柱进行分析，所有分析均采用抑制型色谱技术。新罕布什尔大学气候变化研究中心冰川研究小组按照既定的防污染操作规范，将该冰芯切割为3厘米的样品段，所有样品段均保持冷冻状态，直至开展主要离子分析。