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Ion nucleation as a detector: application of REMPI to generate selected ions in supersaturated vapors

✍ Scribed by David Kane; M. Samy El-Shall

Book ID: 103037192
Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 419 KB
Volume: 259
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)00827-5

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✦ Synopsis

Resonance enhanced multiphoton ionization (REMPI) of aromatic molecules present in a small concentration within a supersaturated host vapor is demonstrated. The method is applied to the study of ion nucleation in supersaturated vapors of methanol, acetoniWile and nonane induced by the molecular ions of benzene, toluene, and p-xylene. With this method it is now possible to selectively and unambiguously generate specific ions of interest and study their nucleating behavior. Furthermore, the selectivity of REMPI combined with the amplification and detection capabilities of nucleation and growth offer valuable analytical features for the identification of trace components in supersaturated vapors.

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