Alkali halides as positive and negative ion source for ion mobility and mass spectrometry
Publish place: 20th Iranian Conference on the Chemistry of Physics
Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISPTC20_187
تاریخ نمایه سازی: 2 تیر 1397
Abstract:
Filament ion sources have been used in the production of high current of ions for a wide variety of applications. In this work, a new long-life alkali ion source, based on alkali halide salts doped in nano-γ-alumina (Al2O3) is proposed. Depending the polarity, the ion source produces both alkali and halide ions. Alkali and halid ion peaks were observed by ion mobility spectrometry (IMS) in positive and negative modes, respectively. The lifetime of the ion source for different alkali halides was measured to be in the range of 216-960 h. The total ion current emitted from the source was about 2A, while at the collector plate of the IMS it was 12 nA. Finally, the application of the new source in ion mobility spectrometry was demonstrated by observing ion mobility spectra of some compounds ionized via cation attachment reaction.
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Authors
Hassan Shahraki
Department of Chemistry, Isfahan University of Technology, Isfahan, ۸۴۱۵۶-۸۳۱۱۱, Iran
Mahmoud Tabrizchi
Department of Chemistry, Isfahan University of Technology, Isfahan, ۸۴۱۵۶-۸۳۱۱۱, Iran
Hossein Farrokhpour
Department of Chemistry, Isfahan University of Technology, Isfahan, ۸۴۱۵۶-۸۳۱۱۱, Iran