Abstract The double spike technique is the most reliable method for calibrating instrumental and chemical mass-dependent fractionation, which has been widely applied in isotopic analysis of many elements such as Mo, Sn, Ru, Ca, etc. However, practical use of double spiking is possibly hindered by the perceived difficulties in proper double spike calibration, mathematical inversion and data reduction. In this study, we will refer to Ca double spike on how to yield excellent isotopic data on TIMS. A detailed description on how to choose and calibrate an optimal double spike is presented. Our main aim is to provide a practical guide when working with double spike, especially for researchers in new isotopic systems.

中文翻译：

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通过热电离质谱 (TIMS) 优化钙同位素测量的双尖峰技术

摘要 双加标技术是校准仪器和化学质量相关分馏最可靠的方法，已广泛应用于钼、锡、钌、钙等多种元素的同位素分析。然而，双尖峰的实际应用受到在适当的双尖峰校准、数学反演和数据简化方面可能存在的困难的阻碍。在这项研究中，我们将参考 Ca 双峰如何在 TIMS 上产生出色的同位素数据。详细介绍了如何选择和校准最佳双尖峰。我们的主要目标是在使用双尖峰时提供实用指南，特别是对于新同位素系统的研究人员。