Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 95-101 |
| Seitenumfang | 7 |
| Fachzeitschrift | International Journal for Ion Mobility Spectrometry |
| Jahrgang | 13 |
| Ausgabenummer | 3 |
| Publikationsstatus | Veröffentlicht - 7 Okt. 2010 |
Abstract
Ion mobility spectrometry (IMS) is a well-known method for detecting hazardous compounds in air. Most ion mobility spectrometers use a radioactive source to provide electrons with high energy (5-50 keV) to ionize analytes in a series of chemical reactions. Instead of a radioactive source, we use a non-radioactive electron gun which can be operated in pulsed mode. Thus a delay time between ionization and ion extraction can be introduced which offers the possibility to use the signal decay characteristic of substances as a further discrimination parameter. The influence of voltages supplied to the reaction region and to the electron gun on signal intensities and decay times will be investigated in order to obtain further insight into the dependence of this signal decay on different experimental parameters and correspondingly into the underlying mechanisms.
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in: International Journal for Ion Mobility Spectrometry, Jahrgang 13, Nr. 3, 07.10.2010, S. 95-101.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Investigation of the influence of voltage parameters on decay times in an ion mobility spectrometer with a pulsed non-radioactive electron source
AU - Baether, Wolfgang
AU - Zimmermann, Stefan
AU - Gunzer, Frank
PY - 2010/10/7
Y1 - 2010/10/7
N2 - Ion mobility spectrometry (IMS) is a well-known method for detecting hazardous compounds in air. Most ion mobility spectrometers use a radioactive source to provide electrons with high energy (5-50 keV) to ionize analytes in a series of chemical reactions. Instead of a radioactive source, we use a non-radioactive electron gun which can be operated in pulsed mode. Thus a delay time between ionization and ion extraction can be introduced which offers the possibility to use the signal decay characteristic of substances as a further discrimination parameter. The influence of voltages supplied to the reaction region and to the electron gun on signal intensities and decay times will be investigated in order to obtain further insight into the dependence of this signal decay on different experimental parameters and correspondingly into the underlying mechanisms.
AB - Ion mobility spectrometry (IMS) is a well-known method for detecting hazardous compounds in air. Most ion mobility spectrometers use a radioactive source to provide electrons with high energy (5-50 keV) to ionize analytes in a series of chemical reactions. Instead of a radioactive source, we use a non-radioactive electron gun which can be operated in pulsed mode. Thus a delay time between ionization and ion extraction can be introduced which offers the possibility to use the signal decay characteristic of substances as a further discrimination parameter. The influence of voltages supplied to the reaction region and to the electron gun on signal intensities and decay times will be investigated in order to obtain further insight into the dependence of this signal decay on different experimental parameters and correspondingly into the underlying mechanisms.
KW - Electron beam manipulation
KW - Ionization mechanisms
KW - Non-radioactive electron sources
UR - http://www.scopus.com/inward/record.url?scp=78649903850&partnerID=8YFLogxK
U2 - 10.1007/s12127-010-0046-5
DO - 10.1007/s12127-010-0046-5
M3 - Article
AN - SCOPUS:78649903850
VL - 13
SP - 95
EP - 101
JO - International Journal for Ion Mobility Spectrometry
JF - International Journal for Ion Mobility Spectrometry
SN - 1435-6163
IS - 3
ER -