Abstract The origins of hydrocarbons occurring in oil-bearing fluid inclusions (FIs) have been studied in detail over the last four decades, but very little is known about co-occurring nitrogen, sulfur and oxygen (NSO)-containing compounds. Here, we outline a new method for gathering valuable information on NSO compounds using the Fourier Transform-Ion Cyclotron Resonance-Mass Spectrometry (FT-ICR-MS) in combination with Atmospheric Pressure Photoionization in positive ion mode (APPI (+)) and Electrospray Ionization in negative ion mode (ESI (–)). A key element was to develop a rigorous acid-free cleaning protocol to make oil inclusions from a broad range of host materials accessible to the very sensitive FT-ICR-MS technique. Although oil contamination from surrounding organic matter can never be entirely eliminated, the procedure enables distinction of external contaminants and identification of affected NSO compound classes allowing a conditional interpretation of the FT-results of FI samples, especially for compounds measured in the APPI (+) mode. First insights into the high molecular weight hydrocarbons and NSO-compounds in fluid inclusion oils are presented here using examples from Germany, Tunisia, Pakistan and Mexico.

中文翻译：

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FT-ICR-MS 在 APPI (+) 和 ESI (-) 模式下揭示的含油流体包裹体中的 NSO 化合物：一种新的方法开发

摘要 在过去的 40 年里，人们对含油流体包裹体 (FI) 中碳氢化合物的起源进行了详细研究，但对共生的含氮、硫和氧 (NSO) 的化合物知之甚少。在这里，我们概述了一种使用傅立叶变换-离子回旋共振-质谱 (FT-ICR-MS) 结合正离子模式 (APPI (+)) 和电喷雾的大气压光电离来收集有关 NSO 化合物的有价值信息的新方法负离子模式电离 (ESI (–))。一个关键要素是制定严格的无酸清洁方案，使非常敏感的 FT-ICR-MS 技术可以从广泛的主体材料中获取油包裹体。虽然无法完全消除周围有机物的油污染，该程序能够区分外部污染物并识别受影响的 NSO 化合物类别，从而可以对 FI 样品的 FT 结果进行有条件的解释，特别是对于在 APPI (+) 模式下测量的化合物。本文通过来自德国、突尼斯、巴基斯坦和墨西哥的示例，首次对流体包裹体油中的高分子量碳氢化合物和 NSO 化合物进行了介绍。