- 作者: 林金全
- 作者服務機構: 台灣大學化學系
- 中文摘要: Various applications of laser-enhanced ionization(LEI) in analytical chemistry are reviewed. This technique was applied to determine some physical quantities associated with a flame through development of an appropriate model. Determinations of flame temperature and atomization efficiency of an element in the flame are examples. As trace analysis is an important application of this technique, we compare the ion yield induced in a two-step LEI with that in a one-step LEI. The factors governing the ion enhancement via two-step excitation are examined in order to make efficient use of the two-step LEI apparatus. A novel technique was designed to couple flow-injection analysis to a conventional LEI device; in this manner, electrical interference, a severe problem inherent in LEI, was successfully removed.
- 英文摘要: --
- 中文關鍵字: Laser-Enhanced Ionization; Flame Temperature; Atomization Efficiency; Flow-Injection Analysis
- 英文關鍵字: 雷射增強離子化;火焰溫度;原子化效率;流注分析