Details
| Original language | English |
|---|---|
| Pages (from-to) | 1238-1243 |
| Number of pages | 6 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 171-172 |
| Publication status | Published - 5 Jul 2012 |
Abstract
Ion mobility spectrometry (IMS) is a well-known technique applied to detect hazardous substances in ambient air. Consequently, it has been used for many years for the detection of chemical warfare agents, toxic substances or illegal drugs. The main advantages are the small size of IMS instruments and the very high sensitivity in the range of a few parts per billion. However, one major disadvantage is the fairly difficult interpretation of spectra especially when mixtures of substances are involved. Spectra recorded with a pulsed IMS, in which delay times can be inserted between ion formation and ion detection, can simplify this task due to the distinct behavior that monomer and dimer peaks exhibit with varying delay times. The discrimination between monomer and dimer signals would normally require further experimental efforts (e.g. a mass spectrometer) with disadvantages regarding the portability of the device. This paper describes how a pulsed electron gun used in a standard IMS device allows for this discrimination without compromising any of the benefits IMS devices offer.
Keywords
- Ion mobility spectrometry, Non-radioactive electron sources, Pulsed electron beam ionization, Signal discrimination
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Instrumentation
- Physics and Astronomy(all)
- Condensed Matter Physics
- Materials Science(all)
- Surfaces, Coatings and Films
- Materials Science(all)
- Metals and Alloys
- Engineering(all)
- Electrical and Electronic Engineering
- Materials Science(all)
- Materials Chemistry
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In: Sensors and Actuators, B: Chemical, Vol. 171-172, 05.07.2012, p. 1238-1243.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Signal decay curves obtained with a pulsed electron gun allow for improved analyte identification power of ion mobility spectrometers by distinction of monomer and dimer signals
AU - Baether, Wolfgang
AU - Zimmermann, Stefan
AU - Gunzer, Frank
PY - 2012/7/5
Y1 - 2012/7/5
N2 - Ion mobility spectrometry (IMS) is a well-known technique applied to detect hazardous substances in ambient air. Consequently, it has been used for many years for the detection of chemical warfare agents, toxic substances or illegal drugs. The main advantages are the small size of IMS instruments and the very high sensitivity in the range of a few parts per billion. However, one major disadvantage is the fairly difficult interpretation of spectra especially when mixtures of substances are involved. Spectra recorded with a pulsed IMS, in which delay times can be inserted between ion formation and ion detection, can simplify this task due to the distinct behavior that monomer and dimer peaks exhibit with varying delay times. The discrimination between monomer and dimer signals would normally require further experimental efforts (e.g. a mass spectrometer) with disadvantages regarding the portability of the device. This paper describes how a pulsed electron gun used in a standard IMS device allows for this discrimination without compromising any of the benefits IMS devices offer.
AB - Ion mobility spectrometry (IMS) is a well-known technique applied to detect hazardous substances in ambient air. Consequently, it has been used for many years for the detection of chemical warfare agents, toxic substances or illegal drugs. The main advantages are the small size of IMS instruments and the very high sensitivity in the range of a few parts per billion. However, one major disadvantage is the fairly difficult interpretation of spectra especially when mixtures of substances are involved. Spectra recorded with a pulsed IMS, in which delay times can be inserted between ion formation and ion detection, can simplify this task due to the distinct behavior that monomer and dimer peaks exhibit with varying delay times. The discrimination between monomer and dimer signals would normally require further experimental efforts (e.g. a mass spectrometer) with disadvantages regarding the portability of the device. This paper describes how a pulsed electron gun used in a standard IMS device allows for this discrimination without compromising any of the benefits IMS devices offer.
KW - Ion mobility spectrometry
KW - Non-radioactive electron sources
KW - Pulsed electron beam ionization
KW - Signal discrimination
UR - http://www.scopus.com/inward/record.url?scp=84864285122&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2012.06.080
DO - 10.1016/j.snb.2012.06.080
M3 - Article
AN - SCOPUS:84864285122
VL - 171-172
SP - 1238
EP - 1243
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
ER -