1997 Fiscal Year Final Research Report Summary
Hyperthermal Negative Surface Ionization Applied to the Detector for Gas Chromatography
| Project/Area Number |
07804050
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
分離・精製・検出法
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| Research Institution | Oyama National College of Technologuy |
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Principal Investigator |
KISHI Hiroshi Oyama National College of Technology, Department of Materials Chemistry and Bioengineering, Professor, 物質工学科, 教授 (60042529)
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| Co-Investigator(Kenkyū-buntansha) |
FUJII Toshihiro National Insitute for Environmental Studies, Department of Chemical Environment,, 化学環境部, 上席研究官 (60109907)
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| Project Period (FY) |
1995 – 1997
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| Keywords | Surface Ionization / Aerodynamical Acceleration of Molecules / Negative Ion / Gas chromatography / Detector |
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| Research Abstract |
A new design of nitrogen-phosphorous gas chromatographic detector (NPD), based upon hyperthermal negative surface ionization (HNSI), was used in capillary gas chromatography to sensitively and selectively detect alcohols and phenols. The unique properties of this design allowed detection of these oxygen-containing compounds to which conventional NPDs are reported to have little response. This report describes the application of HNSI to a conventional NPD.The newly-designed detector, referred to as a new-NPD,was operated under experimental conditions where the surface was kept at a low-work-function state as the sample molecules carried kinetic energy. We report our evaluation of the new-NPD for ascohol and phenol analysis. The sensitivity to n-pentanol and phenol was 8.5 X 10^<-1> and 2.6 X 10^0 Coulomb/g, respectively, with a linear range of operation greater than 1 X 10^5 for both these compounds. The minimum detectable level was in the range of 10^<-13>g/s. Compared with a flame ionization detector (FID), the new NPD was about 100 times more sesitive to ascohols and phenols, depending on the particular species.
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