Title |
A Miniaturized Linear Wire Ion Trap with Electron Ionization and Single Photon Ionization Sources
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Published in |
Journal of the American Society for Mass Spectrometry, January 2017
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DOI | 10.1007/s13361-017-1607-1 |
Pubmed ID | |
Authors |
Qinghao Wu, Yuan Tian, Ailin Li, Derek Andrews, Aaron R. Hawkins, Daniel E. Austin |
Abstract |
A linear wire ion trap (LWIT) with both electron ionization (EI) and single photon ionization (SPI) sources was built. The SPI was provided by a vacuum ultraviolet (VUV) lamp with the ability to softly ionize organic compounds. The VUV lamp was driven by a pulse amplifier, which was controlled by a pulse generator, to avoid the detection of photons during ion detection. Sample gas was introduced through a leak valve, and the pressure in the system is shown to affect the signal-to-noise ratio and resolving power. Under optimized conditions, the limit of detection (LOD) for benzene was 80 ppbv using SPI, better than the LOD using EI (137 ppbv). System performance was demonstrated by distinguishing compounds in different classes from gasoline. Graphical Abstract ᅟ. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 3 | 60% |
India | 1 | 20% |
Unknown | 1 | 20% |
Demographic breakdown
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Members of the public | 3 | 60% |
Scientists | 2 | 40% |
Mendeley readers
Geographical breakdown
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Unknown | 13 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 2 | 15% |
Researcher | 2 | 15% |
Student > Master | 2 | 15% |
Student > Bachelor | 1 | 8% |
Professor > Associate Professor | 1 | 8% |
Other | 2 | 15% |
Unknown | 3 | 23% |
Readers by discipline | Count | As % |
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Chemistry | 7 | 54% |
Medicine and Dentistry | 1 | 8% |
Unknown | 5 | 38% |