Resolving powers of >7900 using linked scans: how well does resolving power describe the separation capability of differential ion mobility spectrometry

The Analyst ◽  
2015 ◽  
Vol 140 (20) ◽  
pp. 6871-6878 ◽  
Author(s):  
Brandon G. Santiago ◽  
Rachel A. Harris ◽  
Samantha L. Isenberg ◽  
Gary L. Glish
Keyword(s):  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Resolving Power ◽  
Carrier Gas ◽  
Differential Ion Mobility Spectrometry ◽  
Compensation Field

Linked scans of the differential ion mobility spectrometry carrier gas and compensation field yield resolving powers >7900, more than 16 times greater than the best previously reported values.

scholarly journals High-Definition Differential Ion Mobility Spectrometry with Resolving Power up to 500

2012 ◽  
Vol 24 (1) ◽  
pp. 109-114 ◽  
Author(s):  
Alexandre A. Shvartsburg ◽  
Tom A. Seim ◽  
William F. Danielson ◽  
Randy Norheim ◽  
Ronald J. Moore ◽  
...  
Keyword(s):  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Resolving Power ◽  
High Definition ◽  
Differential Ion Mobility Spectrometry

scholarly journals Design, Fabrication and Mass-spectrometric Studies of a Micro Ion Source for High-Field Asymmetric Waveform Ion Mobility Spectrometry

Micromachines ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 286 ◽  
Author(s):  
Li ◽  
Yun ◽  
Du ◽  
Guo ◽  
Zeng ◽  
...  
Keyword(s):  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
High Field ◽  
Mass Spectra ◽  
Low Cost ◽  
Ion Source ◽  
Resolving Power ◽  
Asymmetric Waveform ◽  
Negative Corona ◽  
Liga Technology

A needle-to-cylinder electrode, adopted as an ion source for high-field asymmetric ion mobility spectrometry (FAIMS), is designed and fabricated by lithographie, galvanoformung and abformung (LIGA) technology. The needle, with a tip diameter of 20 μm and thickness of 20 μm, and a cylinder, with a diameter of 400 μm, were connected to the negative high voltage and ground, respectively. A negative corona and glow discharge were realized. For acetone with a density of 99.7 ppm, ethanol with a density of 300 ppm, and acetic ether with a density of 99.3 ppm, the sample gas was ionized by the needle-to-cylinder chip and the ions were detected by an LTQ XL™ (Thermo Scientific Corp.) mass spectrometer. The mass spectra show that the ions are mainly the protonated monomer, the proton bound dimer, and an ion-H2O molecule cluster. In tandem with a FAIMS system, the FAIMS spectra show that the resolving power increases with an increase in the RF voltage. The obtained experimental results showed that the micro needle-to-cylinder chip may serve as a miniature, low cost and non-radioactive ion source for FAIMS.

Differential Ion Mobility Spectrometry in Application to the Analysis of Gases and Vapours

2014 ◽  
Vol 223 ◽  
pp. 283-290 ◽  
Author(s):  
Mirosław Maziejuk ◽  
Wiesław Lisowski ◽  
Monika Szyposzyńska ◽  
Tomasz Sikora ◽  
Anna Zalewska
Keyword(s):  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Chemical Warfare Agents ◽  
Chemical Warfare ◽  
Differential Ion Mobility Spectrometry ◽  
Alternating Electric Field ◽  
Different Types ◽  
Warfare Agents ◽  
Industrial Compounds ◽  
Alpha Function

Ion mobility spectrometry (IMS) is a technique used for the detection of chemical warfare agents (CWA), drugs, toxic industrial compounds (TIC), and explosives, when rapid detection should be performed (from a few to several seconds) for trace amounts of these substances. An important development of IMS technology is differential ion mobility spectrometry (DMS). DMS is also known as Field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS). Detection possibilities of apparatus using the DMS method are based on the occurrence of the different mobilities of ions (K) in the alternating electric field. This dependence is characterized by the alpha function (α).This presentation shows methods and examples of the identification of chosen substances. The results for the dependence of coefficient α are specific for different types of substances. This specificity is used to identify vapours and gases.

P2.3.8 Detection of VOCs by Corona Discharge-Ion Mobility Spectrometry in mixed N2/O2 carrier gas

2012 ◽  
Author(s):  
K. Pierpauli ◽  
S. Ortiz ◽  
D. Rodriguez ◽  
N. G. Boggio ◽  
A. Lamagna ◽  
...  
Keyword(s):  
Corona Discharge ◽  
Ion Mobility Spectrometry ◽  
Ion Mobility ◽  
Carrier Gas
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