Thorium isotopes in the water column at station PS94/081@en

Analysis of 230Th and 232Th were performed in clean laboratories of the Alfred-Wegener-Institute (AWI), following GEOTRACES methods (Anderson et al., 2012). Seawater samples were spiked with 229Th and 236U to prepare the isotope dilution analyses by ICP-MS. Spikes were calibrated against the reference standard material UREM11, a material in state of radioactive equilibrium (Hansen et al., 1983]. […]针对钍-230（230Th）与钍-232（232Th）的分析工作均在阿尔弗雷德·魏格纳研究所（Alfred-Wegener-Institute，简称AWI）的洁净实验室中完成，实验流程严格遵循GEOTRACES标准方法（Anderson等，2012）。本研究向海水样品中加入钍-229（229Th）与铀-236（236U）作为同位素稀释剂，用于开展电感耦合等离子体质谱（ICP-MS）的同位素稀释分析。所用稀释剂以处于放射性平衡态的参考标准物质UREM11为参照完成校准（Hansen等，1983）。[…]