Details
| Original language | English |
|---|---|
| Pages (from-to) | 5603-5611 |
| Number of pages | 9 |
| Journal | Analytical chemistry |
| Volume | 90 |
| Issue number | 9 |
| Early online date | 6 Apr 2018 |
| Publication status | Published - 1 May 2018 |
Abstract
High kinetic energy ion mobility spectrometry (HiKE-IMS) allows for sensitive trace gas analysis within seconds, mitigating many disadvantages of standard ion mobility spectrometers through operation at reduced pressure and high electric field strengths. However, these advantages usually come at the cost of reduced resolving power, ranging from a maximum of 75 down to 50 at a reduced field strength of 120 Td for the original device. In this work, we present an extended theory for HiKE-IMS resolving power and a novel tristate ion shutter principle able to achieve initial ion packet widths of 1 μs without significant mobility discrimination. Such an ultrashort injection time allows for improving the resolving power of the HiKE-IMS to 140 for a wide range of reduced electric field strengths. With this resolving power, separating all ion species generated from a mixture of benzene, toluene, and xylene is possible. Furthermore, a resolving power of 140 is sufficient to partially separate isotopologues under high electric field strengths.
ASJC Scopus subject areas
- Chemistry(all)
- Analytical Chemistry
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Analytical chemistry, Vol. 90, No. 9, 01.05.2018, p. 5603-5611.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High-Resolution High Kinetic Energy Ion Mobility Spectrometer Based on a Low-Discrimination Tristate Ion Shutter
AU - Kirk, Ansgar T.
AU - Grube, Denise
AU - Kobelt, Tim
AU - Wendt, Cornelius
AU - Zimmermann, Stefan
N1 - Copyright © 2018 American Chemical Society
PY - 2018/5/1
Y1 - 2018/5/1
N2 - High kinetic energy ion mobility spectrometry (HiKE-IMS) allows for sensitive trace gas analysis within seconds, mitigating many disadvantages of standard ion mobility spectrometers through operation at reduced pressure and high electric field strengths. However, these advantages usually come at the cost of reduced resolving power, ranging from a maximum of 75 down to 50 at a reduced field strength of 120 Td for the original device. In this work, we present an extended theory for HiKE-IMS resolving power and a novel tristate ion shutter principle able to achieve initial ion packet widths of 1 μs without significant mobility discrimination. Such an ultrashort injection time allows for improving the resolving power of the HiKE-IMS to 140 for a wide range of reduced electric field strengths. With this resolving power, separating all ion species generated from a mixture of benzene, toluene, and xylene is possible. Furthermore, a resolving power of 140 is sufficient to partially separate isotopologues under high electric field strengths.
AB - High kinetic energy ion mobility spectrometry (HiKE-IMS) allows for sensitive trace gas analysis within seconds, mitigating many disadvantages of standard ion mobility spectrometers through operation at reduced pressure and high electric field strengths. However, these advantages usually come at the cost of reduced resolving power, ranging from a maximum of 75 down to 50 at a reduced field strength of 120 Td for the original device. In this work, we present an extended theory for HiKE-IMS resolving power and a novel tristate ion shutter principle able to achieve initial ion packet widths of 1 μs without significant mobility discrimination. Such an ultrashort injection time allows for improving the resolving power of the HiKE-IMS to 140 for a wide range of reduced electric field strengths. With this resolving power, separating all ion species generated from a mixture of benzene, toluene, and xylene is possible. Furthermore, a resolving power of 140 is sufficient to partially separate isotopologues under high electric field strengths.
UR - http://www.scopus.com/inward/record.url?scp=85046464850&partnerID=8YFLogxK
U2 - 10.1021/acs.analchem.7b04586
DO - 10.1021/acs.analchem.7b04586
M3 - Article
C2 - 29624371
AN - SCOPUS:85046464850
VL - 90
SP - 5603
EP - 5611
JO - Analytical chemistry
JF - Analytical chemistry
SN - 0003-2700
IS - 9
ER -