Development of Radio Frequency Glow Discharge Devices

这个项目是在一般地区的分析和表面 化学和光谱化学分析领域。 期间 马库斯教授在这三年的持续资助任期内， 他的学生将开发和评估射频辉光 放电（rf-GD）装置作为光谱化学源， 固体元素分析，原子发射，原子吸收， 和质谱方法。 rf-GD方法是 特别有利于分析不导电的 不屈服于石墨溅射/原子化的固体 炉或其它更常规的方法。 四个具体 研究的推力领域是（1）开发方法， rf-GD质量和排放技术中的定量，（2） rf-GD中激发/电离过程的表征，（3） 探索脉冲和变频等离子体操作，以及 (4)rf-GD原子吸收原子化器的研制。 %%% 这项研究涉及光谱化学分析的一个领域， 具有重大的技术意义。 它建立在结果之上 根据NSF授予CHE-8901788获得，并应提供依据 对于玻璃的快速和可靠的直接元素分析， 陶瓷和其它不导电的固体材料。

This project is in the general area of analytical and surface chemistry and in the subfield of spectrochemical analysis. During the tenure of this three year continuing grant, Professor Marcus and his students will develop and evaluate radio frequency glow discharge (rf-GD) devices as spectrochemical sources for direct solids elemental analysis by atomic emission, atomic absorption, and mass spectrometric methods. The rf-GD approach is particularly advantageous for the analysis of non-conducting solids that do not yield to sputtering/atomization by graphite furnace or other more conventional approaches. Four specific thrust areas for investigation are (1) development of methods for quantification in rf-GD mass and emission techniques, (2) characterization of excitation/ionization processes in rf-GD, (3) exploration of pulsed and variable frequency plasma operation, and (4) development of an rf-GD atomic absorption atomizer. %%% This research addresses an area of spectrochemical analysis which is of major technological importance. It builds upon results obtained under NSF grant CHE-8901788 and should provide the basis for the rapid and reliable direct elemental analysis of glass, ceramic, and other nonconducting solid materials.