Title:
SURFACE IONIZATION DETECTOR
Document Type and Number:
WIPO Patent Application WO/2010/069213
Kind Code:
A1
Abstract:
A surface ionization detector comprises an emitter, a heating rod, a collecting electrode, a diameter-changing connecting lining tube and a house. The emitter is made of molybdenum, platinum or alloy, and winds cylindrically or spirally. The heating rod heats and supports the metal emitter. When the emitter is heated to 300-500℃, organic amine compounds collide with the surface of the emitter, positive ions are produced through surface ionization and thus detected. The lowest detecting limit value of tertiary amine could achieve to 10-14g/s. The response to other hydrocarbons and ketones is 5-6 orders of magnitude lower than organic amines. The detector could selectively detect amines, hydrazines and derivatives and thereof, and so on. The detector could be used as a detector for a gas chromatography system such as capillary tube and packed column, and alternatively could be solely used as a sensor.
Inventors:
GUAN YAFENG (CN)
LI WEIWEI (CN)
ZHU DAOQIAN (CN)
WANG JIANWEI (CN)
LI WEIWEI (CN)
ZHU DAOQIAN (CN)
WANG JIANWEI (CN)
Application Number:
PCT/CN2009/074820
Publication Date:
June 24, 2010
Filing Date:
November 05, 2009
Export Citation:
Assignee:
DALIAN CHEMICAL PHYSICS INST (CN)
GUAN YAFENG (CN)
LI WEIWEI (CN)
ZHU DAOQIAN (CN)
WANG JIANWEI (CN)
GUAN YAFENG (CN)
LI WEIWEI (CN)
ZHU DAOQIAN (CN)
WANG JIANWEI (CN)
International Classes:
G01N27/62; G01N30/64; H01J27/26; H01J49/16
Foreign References:
| CN86103355A | 1986-11-12 | |||
| JPH09210982A | 1997-08-15 | |||
| JPH10115606A | 1998-05-06 |
Attorney, Agent or Firm:
SHENYANG PATENT & TRADEMARK AGENCY ACADEMIA SINICA (Heping DistrictShenyang, Liaoning 4, CN)
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