Detailed Investigations of Resonance Electron Capture Reactions in the Gas Phase

蒙大拿州立大学埃里克·格里姆斯鲁德教授的这个项目是对发生在气相的共振电子捕获反应的基本步骤的研究。这些反应是气相色谱中使用的电子捕获检测器、离子迁移率光谱中的电离源和几种形式的负离子质谱的转导反应的基础。更好地理解这些反应步骤，可以更好地再现测量结果，然后使用涉及这些基本步骤的传感器进行更好的定量测量。机制的理解也可能导致方法，可用于降低热剥离反应的速率，导致传感器用于检测低或中等电子亲和的化合物。本提案解决了影响气相色谱中广泛使用的检测器响应的基本步骤，以及质谱中广泛使用的电离源。更好地了解这些步骤将导致更精确和准确的分析测量，特别是在环境分析中使用的方法。

This project by Professor Eric Grimsrud of Montana State University is a study of the elementary steps of resonant electron capture reactions that occur in the gas phase. These reactions underlie the transduction response of electron capture detectors used in gas chromatography, ionization sources in ion mobility spectrometry, and several forms of negative ion mass spectrometry. Better understanding of these reaction steps leads to both better reproducibility of measurement, and then better quantitative measurements using transducers that involve these elementary steps. Mechanistic understanding may also lead to methods that can be used to decrease the rate of thermal detachment reactions, leading to applications of the transducers for the detections of compounds of low or moderate electron affinity.This proposal addresses the elementary steps that affect the response of a widely-used detector in gas chromatography, and a widely used ionization source in mass spectrometry. Better understanding of those steps will lead to more precise and accurate analytical measurements, most especially in methods used in environmental analysis.