Results 221 to 230 of about 20,265 (247)

Examination of some organic explosives by ion mobility spectrometry (IMS)

2005
The increase in terrorist activities committed using explosives in recent years has generated the need for improved analytical methods that can accurately and quickly identify explosives and their residues. In this study such an analytical method is evaluated. In the first phase of the study, standard solutions and a standard mixture solution of TNT (2,
Seven, E, Calimli, A, Koyuncu, H
openaire   +2 more sources

Rapid detection of Aspergillus spp. infection levels on milled rice by headspace-gas chromatography ion-mobility spectrometry (HS-GC-IMS) and E-nose

, 2020
This study described the rapid detection of milled rice infected with Aspergillus spp. species based on headspace-gas chromatography ion-mobility spectrometry (HS-GC-IMS) and electronic nose (E-nose) combined with chemometrics, namely principal component
Shuang-Shuang Gu, Wei Chen, Zhenhe Wang, Jun Wang, Yujia Huo   +4 more
semanticscholar   +1 more source

Influence of Sample Gas Humidity on Product Ion Formation in High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS)

Journal of the American Society for Mass Spectrometry, 2022
High Kinetic Energy Ion Mobility Spectrometers (HiKE-IMS) chemically ionize gaseous samples via reactant ions and separate the generated ions by their motion in a neutral gas under the influence of an electric field. Operation at reduced pressures of 10–40 mbar allows for reaching high reduced electric field strengths (E/N) of up to 120 Td.
Christoph Schaefer, Florian Schlottmann, Ansgar T. Kirk, Stefan Zimmermann   +3 more
openaire   +2 more sources

Detection of tetrahydrocannabinol residues on hands by ion-mobility spectrometry (IMS). Correlation of IMS data with saliva analysis

Analytical and Bioanalytical Chemistry, 2015
Ion-mobility spectroscopy (IMS) was evaluated as a high-throughput, cheap, and efficient analytical tool for detecting residues of tetrahydrocannabinol (THC) on hands. Regarding the usefulness of hand residues as potential samples for determining THC handling and abuse, we studied the correlation between data obtained from cannabis consumers who were ...
Saskia, Sonnberg, Sergio, Armenta, Salvador, Garrigues, Miguel, de la Guardia   +3 more
openaire   +2 more sources

Multicapillary ion mobility spectrometry (MCC-IMS) for early identification of bacteria in vitro

Respiratory Infections, 2017
Introduction: Early differentiation of bacterial species is crucial especially in the scope of emerging multiresistant strains. Conventional diagnosis takes about 3 working days even Maldi-TOF requires a preculture and is normally not available in less than 12 – 24 hours. During growth bacteria produce specific volatile compounds (VOC).
Claus Steppert, Tanja Dick, Isabel Steppert, Sven Schimanski, Thomas Bollinger, Roman Purkart, Gunther Becher   +6 more
openaire   +1 more source

Transversal Modulation Ion Mobility Spectrometry (TM-IMS), A New Mobility Filter Overcoming Turbulence Related Limitations

Analytical Chemistry, 2012
The analysis of ions according to their mobility is a technique that is attracting increasing interest. The new technology presented here, which we have termed Transversal Modulation Ion Mobility Spectrometry (TM-IMS), utilizes only electric fields, operates at atmospheric pressure, produces a continuous output of mobility selected ions (according to ...
G, Vidal-de-Miguel, M, Macía, J, Cuevas
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Ion−Neutral Potential Models in Atmospheric Pressure Ion Mobility Time-of-Flight Mass Spectrometry IM(tof)MS

The Journal of Physical Chemistry A, 2006
The ion mobilities and their respective masses of several classes of amines (primary, secondary, and tertiary) were measured by electrospray ionization atmospheric pressure ion mobility time-of-flight mass spectrometry IM(tof)MS. The experimental data obtained were comparatively analyzed by the one-temperature kinetic theory of Chapman-Enskog.
Wes E, Steiner, William A, English, Herbert H, Hill   +2 more
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Tandem ion mobility-mass spectrometry (IMS-MS) study of ion evaporation from ionic liquid-acetonitrile nanodrops

Physical Chemistry Chemical Physics, 2009
Ion evaporation is an essential step in the formation of charged ions from electrosprays, yet many aspects of the process are poorly understood. The ion evaporation kinetics of the 1-ethyl-3-methyl-imidazolium+ (EMI+) based ionic liquids (ILs) EMI-BF4, EMI-bis(perfluoroethylsulfonyl)imide, EMI-bis(trifluoromethylsulfonyl)imide and EMI-tris ...
Christopher J, Hogan, Juan, Fernández de la Mora   +1 more
openaire   +2 more sources

Ion mobility spectrometry (IMS)-a chemical separation technique using an electrostatic field

Conference Record of the IEEE Industry Applications Society Annual Meeting, 2003
The author describes a chemical sensing and discrimination technique called ion mobility spectrometry (IMS), which separates ionic species in a chemical vapor by their mobility in an electrostatic field. An advantage of IMS over other techniques is speed of response.
openaire   +1 more source

Rapid screening of abused drugs by direct analysis in real time (DART) coupled to time-of-flight mass spectrometry (TOF-MS) combined with ion mobility spectrometry (IMS).

Forensic Science International, 2017
R. Lian, Zhongping Wu, Xiaobao Lv, Yulan Rao, Haiyang Li, Jinghua Li, Rong Wang, Chunfang Ni, Yurong Zhang   +8 more
semanticscholar   +1 more source