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1,507 Newest Publications about the topic spectrometers

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Helium Tagging Infrared Photodissociation Spectroscopy of Reactive Ions

28-Jan-2016 | Jana Roithová; Andrew Gray; Erik Andris; Juraj Jašík; Dieter Gerlich, Accounts of Chemical Research, 2016

ConspectusThe interrogation of reaction intermediates is key for understanding chemical reactions; however their direct observation and study remains a considerable challenge. Mass spectrometry is one of the most sensitive analytical techniques, and its use to study reaction mixtures is now an ...

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Review of explosive detection methodologies and the emergence of standoff deep UV resonance Raman

22-Jan-2016 | Katie L. Gares, Kyle T. Hufziger, Sergei V. Bykov, Sanford A. Asher, Journal of Raman Spectroscopy, 2016

Due to terrorist use of explosive devices, intense interest has been directed towards the development of techniques and instrumentation to detect explosives. A number of analytical techniques are currently under investigation for trace explosive detection. Several methods have been successfully ...

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Raman spectroscopy in forensic analysis: identification of cocaine and other illegal drugs of abuse

22-Jan-2016 | Ciro Augusto Fernandes Penido, Marcos Tadeu Tavares Pacheco, Igor K. Lednev, Landulfo Silveira, Journal of Raman Spectroscopy, 2016

Current forensic methods for detecting and identifying cocaine and other drugs of abuse are destructive, so evidence cannot be re‐analyzed. Raman spectroscopy, based on inelastic light scattering, allows for rapid, inexpensive and nondestructive analysis in forensic science. This review presents ...

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Systematic evaluation of data‐independent acquisition for sensitive and reproducible proteomics‐a prototype design for a single injection assay

12-Jan-2016 | M. R. Heaven, A. J. Funk, A. L. Cobbs, W. D. Haffey, J. L. Norris, R. E. McCullumsmith, K. D. Greis, Journal of Mass Spectrometry, 2016

Liquid chromatography interfaced to tandem mass spectrometers (LC‐MS/MS) allows targeted and discovery‐based identification of proteins, post‐translational modifications, and isoform variants. More work however remains to be done to develop robust discoverybased reproducible quantitative ...

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Axial spatial distribution focusing: improving MALDI‐TOF/RTOF mass spectrometric performance for high‐energy collision‐induced dissociation of biomolecules

29-Dec-2015 | O. Belgacem, E. Pittenauer, M. E. Openshaw, P. J. Hart, A. Bowdler, G. Allmaier, Rapid Communications in Mass Spectrometry, 2015

Rationale For the last two decades, curved field reflectron technology has been used in matrix‐assisted laser desorption/ionization time‐of‐flight (MALDI‐TOF) mass spectrometers, assisting in the generation of post‐source‐decay (PSD) or collision‐induced dissociation (CID) without decelerating ...

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Synchronized Desorption Electrospray Ionization Mass Spectrometry Imaging

24-Dec-2015 | Troy J. Comi; Seung Woo Ryu; Richard H. Perry, Analytical Chemistry, 2015

Desorption electrospray ionization (DESI) has emerged as a powerful technique for mass spectral analysis and imaging under ambient conditions. Synchronization of DESI (sDESI) with the ion injection period (IT)of low-duty cycle mass spectrometers has been previously shown to improve sensitivity ...

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Direct Analysis of Nonvolatile Chemical Compounds on Surfaces Using a Hand-Held Mass Spectrometer with Synchronized Discharge Ionization Function

11-Dec-2015 | Xiao Wang; Xiaoyu Zhou; Zheng Ouyang, Analytical Chemistry, 2015

Synchronized discharge ionization (SDI) was previously developed for hand-held mass spectrometers with discontinuous atmospheric pressure interfaces. The function of SDI has been demonstrated for analysis of volatile organic compounds in air at high sensitivity, which is attributed to the fact ...

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Rapid profiling of antimicrobial compounds characterising B. subtilis TR50 cell‐free filtrate by high‐performance liquid chromatography coupled to high‐resolution Orbitrap™ mass spectrometry

02-Dec-2015 | Linda Monaci, Laura Quintieri, Leonardo Caputo, Angelo Visconti, Federico Baruzzi, Rapid Communications in Mass Spectrometry, 2015

Rationale Several Bacillus strains, typically isolated from different food sources, represent renowned producers of a multitude of low and high molecular weight compounds, including lipopeptides and macrolactones, with an importance for their antimicrobial activity. The high homology shared by ...

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Microcavity‐Stabilized Quantum Cascade Laser

24-Nov-2015 | Mario Siciliani de Cumis, Simone Borri, Giacomo Insero, Iacopo Galli, Anatoliy Savchenkov, Danny Eliyahu, Vladimir I ..., Laser & Photonics Reviews, 2015

Narrow‐linewidth lasers are key elements in optical metrology and spectroscopy. Spectral purity of these lasers determines accuracy of the measurements and quality of collected data. Solid state and fiber lasers are stabilized to relatively large and complex external optical cavities or narrow ...

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On the Origin of AMS “Cooking Organic Aerosol” at a Rural Site

18-Nov-2015 | M. Dall’Osto; M. Paglione; S. Decesari; M. C. Facchini; C. O’Dowd; Christian Plass-Duellmer; Roy M. Harrison, Environmental Science & Technology, 2015

A number of field observations employing aerosol mass spectrometers (AMS) have demonstrated that organic matter rich in monocarboxylic acids and aliphatic carbonyls originating from cooking activities (the COA factor) contributes significantly to ambient organic matter (OM) in urban environments. ...

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