Fe concentration and fluxes from the NEEM ice core (Greenland)

In this dataset, we present Fe, Na and Ca concentration and fluxes retrieved from the North Greenland Eemian Ice Drilling (NEEM) ice core project, covering the last 108 kyrs. The sampling resolution was 110 cm. To ensure an effective dissolution of Fe particles, samples were acidified to pH 1 using Suprapure nitric acid and stored at room temperature for 1 month before the analysis. The ice samples were analyzed with an Inductively Coupled Plasma Single Quadrupole Mass Spectrometer equipped with a quartz Scott spray chamber. Limits of Detection, calculated as three times the standard deviation of the blanks, were 0.8 µg L-1 for 57Fe, 1 µg L-1 for Ca and 3 µg L-1 for Na.

本数据集收录了源自北格陵兰埃姆间冰期冰芯钻探（North Greenland Eemian Ice Drilling, NEEM）冰芯项目的铁、钠、钙浓度与通量数据，时间跨度覆盖过去10.8万年。采样分辨率为110厘米。为确保铁颗粒有效溶解，所有样品均使用超纯硝酸（Suprapure nitric acid）酸化至pH值为1，并在室温下储存1个月后进行分析。冰样采用配备石英Scott喷雾室的电感耦合等离子体单四极杆质谱仪（Inductively Coupled Plasma Single Quadrupole Mass Spectrometer）进行检测。检测限以空白标准偏差的三倍计算，其中57Fe为0.8 µg·L⁻¹，钙为1 µg·L⁻¹，钠为3 µg·L⁻¹。