Source:http://linkedlifedata.com/resource/pubmed/id/17016831
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
21
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| pubmed:dateCreated |
2006-10-16
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| pubmed:abstractText |
A study has been made of the atmospheric-pressure Penning ionization (APPeI) of aliphatic hydrocarbons (pentane, hexane, heptane, and octane) with long-lived rare gas atoms (Rg*). The metastable rare gas atoms (He*, Ne*, Ar* and Kr*) were generated by the negative-mode corona discharge of atmospheric-pressure rare gases. In the Rg*APPeI mass spectra for aliphatic hyrocarbons, the relative abundances of fragment ions were found to increase in the order of He* --> Ne* --> Ar* --> Kr*. The order is in the opposite direction to the internal energies of the Rg*. The less fragmentation observed for He* may be because the nascent molecular ions [M(+.)]* formed by Penning ionization have lifetimes long enough for them to be collisionally deactivated in the atmospheric-pressure ion source. It was found that the relative abundances of fragment ions in Ar*APPeI increased when the sample pressure in the ion source was reduced. This is attributed to the collision of Ar* with molecular ions followed by fragmentation.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:issn |
0951-4198
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| pubmed:author | |
| pubmed:copyrightInfo |
Copyright (c) 2006 John Wiley & Sons, Ltd.
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| pubmed:issnType |
Print
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| pubmed:volume |
20
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
3213-22
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| pubmed:year |
2006
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| pubmed:articleTitle |
Atmospheric-pressure Penning ionization of aliphatic hydrocarbons.
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| pubmed:affiliation |
Clean Energy Research Center, University of Yamanashi, Kofu 400-8511, Japan. hiraoka@yamanashi.ac.jp
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| pubmed:publicationType |
Journal Article
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