Experimental determination of theta(T) for the calcite-water equilibium

方解石-水平衡的 theta(T) 的实验测定

• 批准号: 354187771
• 负责人: Professor Dr. Andreas Pack
• 金额: --
• 依托单位: Abteilung Isotopengeologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/354187771?language=en
• 关键词: Experimental; determination; theta; calcite; water

We aim to determine the triple oxygen isotope fractionation factors (d17O, d18O) between calcite and water as function of temperature. A part of the project is the development of a protocol for high-precision measurements of D17O of calcite. The protocol includes acid digestion of calcite and analysis of d17O and d18O of liberated CO2 by means of high-precision gas source mass spectrometry. We will apply the protocol to measure the d17O and d18O fractionation between calcite and water at different temperatures. Within this development, we will also determine the 17O/16O acid fractionation factor. The goal is to introduce a new provenance tool and a new quasi single phase thermometer.

我们的目标是确定方解石和水之间作为温度函数的三重氧同位素分馏因子（d17O、d18O）。该项目的一部分是开发方解石 D17O 高精度测量协议。该协议包括方解石的酸消解以及通过高精度气源质谱分析释放的 CO2 的 d17O 和 d18O。我们将应用该协议来测量不同温度下方解石和水之间的 d17O 和 d18O 分馏。在此开发过程中，我们还将确定 17O/16O 酸分馏因子。目标是引入一种新的来源工具和一种新的准单相温度计。