Nanoparticle Mass Spectrometry

该项目得到化学系分析和表面化学方案以及大气科学系大气化学方案的支持，重点是开发一种仪器和方法，用于对直径在0.5-100纳米范围内的尺寸选定的颗粒进行实时化学分析。将要开发的仪器将离子陷阱与反射场飞行时间质谱仪相结合。特拉华大学化学系的Murray V.Johnston教授和他的学生将建造这台仪器，并将其应用于成核、大气化学、烟雾动力学、燃烧和其他小粒子科学领域的问题。目前还没有方法对根据大小分类的非常小的颗粒进行化学分析。该项目由特拉华大学的默里·V·约翰斯顿教授和他的研究小组领导，专注于建造一种仪器，将离子陷阱与反射场飞行时间质谱仪耦合，以便进行此类分析。这台仪器将用于解决小颗粒科学的许多领域的问题，包括大气化学、烟雾动力学、成核和燃烧。

This project, supported in the Analytical and Surface Chemistry Program of the Division of Chemistry and in the Atmospheric Chemistry Program of the Division of Atmospheric Sciences, focusses on the development of an instrument and methodology for real time chemical analysis of size-selected particles in the 0.5 - 100 nanometer diameter range. The instrument to be developed couples an ion trap with a reflecting-field time-of-flight mass spectrometer. Professor Murray V. Johnston and his students in the Department of Chemistry at the University of Delaware will construct this instrument and apply it to problems in nucleation, atmospheric chemistry, smog dynamics, combustion, and other areas of small particle science. There presently are no methods for doing chemical analyses on very small particles that are sorted according to size. This project, led by Professor Murray V. Johnston and his research group at the University of Delaware, focusses on building an instrument that couples an ion trap with a reflecting- field time-of-flight mass spectrometer so that such analyses can be done. This instrument will be used to solve problems in many areas of small particle science including atmospheric chemistry, smog dynamics, nucleation, and combustion.