A novel surface ionization source for ion mobility spectrometer.
A surface ionization (SI) source is designed and prepared for ion mobility spectrometer (IMS). The source acts not only as an emitter but also an ion injector which can inject ions periodically into the drift region of drift tube. Using the dual-role source, the dimension of the drift tube can be decreased and the circuit for high voltage can be simplified efficiently. The IMS with the SI source has a response range of approximately 4 orders of magnitude and a good reproducibility to tri-ethylamine. Compared with radioactive ionization (RI), the ultra-short time for ion injection and the zero level base line of ion mobility spectrum are characteristics of the surface ionization.
Hui-yong
Guo
G
State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China.
Xiu-li
He
H
Xiao-guang
Gao
G
Jian
Jia
J
Jian-ping
Li
L
D002623:Chemistry Techniques, Analytical / Q000379:methods; D004566:Electrodes; D004867:Equipment Design; D005021:Ethylamines / Q000737:chemistry; D017136:Ion Transport; D007477:Ions; D007700:Kinetics; D008956:Models, Chemical; D015233:Models, Statistical; D015203:Reproducibility of Results; D013053:Spectrophotometry / Q000379:methods*; D013499:Surface Properties; D013997:Time Factors
D005021:Ethylamines; D007477:Ions; C016162:triethylamine