Currently, laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) is a prominent and powerful method for in situ isotopic analysis. It provides high precision and spatially resolved isotopic information in solid samples. Data reduction of LA-MC-ICP-MS is inherently challenging owing to the severe mass spectral interferences and complex mass bias behaviors that occur during the analytical process. In this study, we present new freeware software, Iso-Compass, for isotope data reduction in LA-MC-ICP-MS. This software provides highly practical functions, including a simple data input interface, manually defined selection of laser and background signals, background correction, internal or external mass bias correction, interference correction, visual data presentation, and formatted data output. These functions can achieve easier and efficient reduction of LA-MC-ICP-MS data. The flexible formula editing mode enables Iso-Compass to be used in different isotope systems, thereby offering the potential to become a universal isotope data reduction platform for the geochemical community. Moreover, we present two examples (radiogenic Sr isotope analysis and stable Zr isotope analysis) to demonstrate the effectiveness of Iso-Compass.

中文翻译：

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Iso-Compass：用于减少LA-MC-ICP-MS同位素数据的新免费软件

当前，激光烧蚀多收集器电感耦合等离子体质谱法（LA-MC-ICP-MS）是一种重要的原位检测方法同位素分析。它提供了固体样品中的高精度和空间分辨同位素信息。由于在分析过程中会发生严重的质谱干扰和复杂的质量偏置行为，因此LA-MC-ICP-MS的数据缩减固有地具有挑战性。在这项研究中，我们提出了新的免费软件Iso-Compass，用于在LA-MC-ICP-MS中减少同位素数据。该软件提供了高度实用的功能，包括简单的数据输入界面，手动定义的激光和背景信号选择，背景校正，内部或外部质量偏差校正，干扰校正，视觉数据表示以及格式化的数据输出。这些功能可以更轻松有效地减少LA-MC-ICP-MS数据。灵活的公式编辑模式使Iso-Compass可以在不同的同位素系统中使用，从而有可能成为地球化学界通用的同位素数据缩减平台。此外，我们提供了两个示例（放射源Sr同位素分析和稳定的Zr同位素分析）来证明Iso-Compass的有效性。