Heavy metal concentrations in marine sediments around Casey station, East Antarctica - long-term monitoring

Sediment cores (5cm diameter x 10cm deep), collected as part of the long-term monitoring of the Thala Valley waste disposal site clean-up (Casey station), were sectioned and a portion of each core analysed for a range of heavy metals. Metals were extracted from the sediment via a 4 hour 1M HCl acid extraction. Concentrations were gained from ICP-MS analysis of the resulting extracts (ICP-MS conducted at the School of Chemistry, University of Tasmania). Cores were collected from various control and potentially impacted sites in the Windmill Islands around Casey station.This work was conducted as part of ASAC 2201 (ASAC_2201).

为开展塔哈拉谷废物处置场清理项目（凯西站）的长期监测工作，研究人员采集了直径5厘米、深度10厘米的沉积物岩芯，对岩芯进行切片处理后，每份岩芯取部分样品开展多种重金属含量分析。采用1M盐酸萃取4小时的方法从沉积物中提取金属，通过电感耦合等离子体质谱法（ICP-MS）对所得萃取液进行分析以获得金属浓度（该项ICP-MS测试工作由塔斯马尼亚大学化学学院完成）。本次采集的岩芯来自凯西站周边风车群岛的多个对照点位与潜在受影响点位。本研究作为ASAC 2201（ASAC_2201）项目的一部分实施完成。