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Study of the surface ionization detector for gas chromatography.

Abstract
The structure of the surface ionization detector (SID) and the operation parameters of GC-SID were investigated to reduce peak tailing and to enhance sensitivity. The performances of the GC-SID, including its repeatability, linearity, sensitivity, selectivity, and tolerance towards water vapor, were evaluated systematically. Compared with nitrogen-phosphorus detector (NPD), the SID was able to detect fg level triethylamine, and selectively respond to alkylamines, some anilines, and some nitrogen heterocyclic compounds. Among alkylamines, the SID sensitivity to diisobutylamine was rather small. Even so, it was also still 10 times higher than that on NPD. The SID selectivity, defined as the sensitivity ratio between triethylamine and various tested non-nitrogen compounds, was higher than 10(6). It was found that the SID is highly tolerant towards water vapor, allowing direct injection of water sample. Finally, the GC-SID was applied to directly measure trace amines in headspace gases of rotted meat and trace simazine in tap water. The SID sensitivity to simazine was proven to be 5 times higher than that on flame ionization detector (FID). This study suggests that the SID is a promising GC detector.
AuthorsWeiwei Li, Dapeng Wu, Shiheng Chen, Hong Peng, Yafeng Guan
JournalJournal of chromatography. A (J Chromatogr A) Vol. 1218 Issue 38 Pg. 6812-6 (Sep 23 2011) ISSN: 1873-3778 [Electronic] Netherlands
PMID21839459 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2011 Elsevier B.V. All rights reserved.
Chemical References
  • Amines
  • Herbicides
  • Water Pollutants, Chemical
  • Simazine
Topics
  • Amines (analysis)
  • Animals
  • Chromatography, Gas (instrumentation, methods)
  • Herbicides (analysis)
  • Meat (analysis)
  • Simazine (analysis)
  • Water Pollutants, Chemical (analysis)

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