Details
| Original language | English |
|---|---|
| Pages (from-to) | 105-109 |
| Number of pages | 5 |
| Journal | International Journal for Ion Mobility Spectrometry |
| Volume | 20 |
| Issue number | 3 |
| Publication status | Published - 15 Jun 2017 |
Abstract
The drift voltage is one of the key experimental parameters of any drift tube ion mobility spectrometer. In this work, we show that a universal relationship between optimum drift voltage and the resolving power reached at this point exists, governed only by temperature and ion charge state. With these two quantities known, the measured optimum drift voltage and resolving power combination can be used to estimate the ideality of the drift conditions inside a drift tube, since any deviation from the theoretical values must be caused by non-idealities in the ions’ drift. Analyzing drift voltage sweeps from nine different ion mobility spectrometers, a continuous increase in drift tube ideality over the past is observed, reaching from less than 50% thirty years ago to 99% for a current design based on printed circuit boards. Furthermore, possible causes for the observed non-idealities are discussed.
Keywords
- Analytical model, Drift tube, Ideality, Ion mobility spectrometry, Non-idealities
ASJC Scopus subject areas
- Chemistry(all)
- Spectroscopy
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In: International Journal for Ion Mobility Spectrometry, Vol. 20, No. 3, 15.06.2017, p. 105-109.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A universal relationship between optimum drift voltage and resolving power
AU - Kirk, Ansgar T.
AU - Bakes, Kai
AU - Zimmermann, Stefan
N1 - Funding information: Funded by the German Research Foundation
PY - 2017/6/15
Y1 - 2017/6/15
N2 - The drift voltage is one of the key experimental parameters of any drift tube ion mobility spectrometer. In this work, we show that a universal relationship between optimum drift voltage and the resolving power reached at this point exists, governed only by temperature and ion charge state. With these two quantities known, the measured optimum drift voltage and resolving power combination can be used to estimate the ideality of the drift conditions inside a drift tube, since any deviation from the theoretical values must be caused by non-idealities in the ions’ drift. Analyzing drift voltage sweeps from nine different ion mobility spectrometers, a continuous increase in drift tube ideality over the past is observed, reaching from less than 50% thirty years ago to 99% for a current design based on printed circuit boards. Furthermore, possible causes for the observed non-idealities are discussed.
AB - The drift voltage is one of the key experimental parameters of any drift tube ion mobility spectrometer. In this work, we show that a universal relationship between optimum drift voltage and the resolving power reached at this point exists, governed only by temperature and ion charge state. With these two quantities known, the measured optimum drift voltage and resolving power combination can be used to estimate the ideality of the drift conditions inside a drift tube, since any deviation from the theoretical values must be caused by non-idealities in the ions’ drift. Analyzing drift voltage sweeps from nine different ion mobility spectrometers, a continuous increase in drift tube ideality over the past is observed, reaching from less than 50% thirty years ago to 99% for a current design based on printed circuit boards. Furthermore, possible causes for the observed non-idealities are discussed.
KW - Analytical model
KW - Drift tube
KW - Ideality
KW - Ion mobility spectrometry
KW - Non-idealities
UR - http://www.scopus.com/inward/record.url?scp=85020526298&partnerID=8YFLogxK
U2 - 10.1007/s12127-017-0219-6
DO - 10.1007/s12127-017-0219-6
M3 - Article
AN - SCOPUS:85020526298
VL - 20
SP - 105
EP - 109
JO - International Journal for Ion Mobility Spectrometry
JF - International Journal for Ion Mobility Spectrometry
SN - 1435-6163
IS - 3
ER -