Electrothermal Vaporization Development for Inductively Coupled Plasma-Mass Spectrometry

这项由分析和表面化学计划支持的研究将加深对电热汽化(ETV)的理解。该项目由德克萨斯大学奥斯汀分校的詹姆斯·霍尔科姆教授领导，将改进ETV，将其用作电感耦合等离子体质谱(ICP-MS)分析的样品引入系统。直接的性能改进将导致多元素分析从一个单一的汽化，一个多路系统，以增加吞吐量，并优化样品传输。此外，使用透射电子显微镜(TEM)、高能电子衍射(HEED)以及蒙特卡罗模拟方法的基础研究将表征和确定控制分析物的相对电离/离子传输效率的参数的重要性。本项目将通过改进电感耦合等离子体质谱(ICP-MS)分析的样品引入系统来改进超痕量分析。这将提高检测环境和其他样品中微量杂质的能力。

This research, supported by the Analytical and Surface Chemistry Program will develop an improved understanding of electrothermal vaporization (ETV). The project, led by Professor James Holcombe of the University of Texas at Austin will lead to improved ETV that will be used as a sample introduction system for inductively coupled plasma-mass spectrometry (ICP-MS) analyses. Direct performance improvements will result in multi-element analyses from a single vaporization, a multiplexed system for increased throughput, and optimized sample transport. Also, fundamental studies using transmission electron microscopy (TEM), high energy electron diffraction (HEED) as well as Monte Carlo modeling methods will characterize and determine the importance of parameters that control relative ionization/ion transport efficiency of analytes. Improvements in ultratrace level analysis of will result from this research This project will develop improvements in ultratrace analysis by improving the sample introduction system for inductively coupled plasma-mass spectrometry (ICP-MS) analyses. This will increase the ability to detect trace impurities in environmental and other samples.