Results 221 to 230 of about 24,155 (261)

Nanomaterial size distribution analysis via liquid nebulization coupled with ion mobility spectrometry (LN-IMS)

The Analyst, 2016
Ion mobility spectrometry is used for nanomaterial size distribution measurement without the need of electrospray based aerosolization.
Seongho, Jeon, Derek R, Oberreit, Gary, Van Schooneveld, Christopher J, Hogan   +3 more
openaire   +2 more sources

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
openaire   +2 more sources

Signal deformation at high ion concentration in atmospheric pressure laser ionization ion mobility spectrometry (APLI-IMS)

Sensors and Actuators B: Chemical, 2017
Abstract When using laser radiation for ionization in ion mobility spectrometry, a large increase in the number of produced ions compared to e.g. standard radioactive sources can be achieved. This number can be so large that Coulomb broadening of the measured mobility signal can be observed.
Marvin Ihlenborg, Jürgen Grotemeyer, Frank Gunzer   +2 more
openaire   +1 more source

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

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

[Photoionization ion mobility spectrometry (UV-IMS) for the isomeric volatile organic compounds].

Guang pu xue yu guang pu fen xi = Guang pu, 2015
The construction and performance study is reported for a newly developed ultraviolet photoionization ion mobility spectrometry (UV-IMS). In the present paper, an UV-IMS technique was firstly developed to detect eleven isomeric volatile organic compounds including the differences in the structure of carbon chain, the style of function group and the ...
Hu, Li, Wen-qi, Niu, Hong-mei, Wang, Chao-qun, Huang, Hai-he, Jiang, Yan-nan, Chu   +5 more
openaire   +1 more source

Rapid screening of 35 new psychoactive substances by ion mobility spectrometry (IMS) and direct analysis in real time (DART) coupled to quadrupole time-of-flight mass spectrometry (QTOF-MS).

Drug Testing and Analysis, 2015
Seongshin Gwak, J. Almirall
semanticscholar   +1 more source

Laser Ionization Detection (LID) and Photoemissive (PE) Ion Mobility Spectrometry (IMS) Development

2001
Abstract : Significant advances are reported in the detection of trace analytes in ambient air by laser ionization detection and photoemissive ion mobility spectrometry. A numerical model was developed that describes the behavior of laser-produced ions in an applied electric field and the subsequent induced current flow in an external detection circuit
openaire   +1 more source

Analysis of volatile compounds and flavor fingerprint in Jingyuan lamb of different ages using gas chromatography-ion mobility spectrometry (GC-IMS).

Meat Science, 2021
F. Wang, Yaqin Gao, Hongbo Wang, Bin Xi, Xiaona He, Xiao-Lin Yang, Wei-hong Li   +6 more
semanticscholar   +1 more source

Point-of-care (POC) diagnosis of bacterial vaginosis (BV) using VGTest™ ion mobility spectrometry (IMS) in a routine ambulatory care gynecology clinic

Archives of Gynecology and Obstetrics, 2015
T. Blankenstein, S. Lytton, B. Leidl, E. Atweh, Klaus Friese, Ioannis Mylonas   +5 more
semanticscholar   +1 more source