Results 81 to 90 of about 20,265 (247)

Assessment of Sauvignon Blanc Aroma and Quality Gradings Based on Static Headspace-Gas Chromatography-Ion Mobility Spectrometry (SHS-GC-IMS): Merging Analytical Chemistry with Machine Learning [PDF]

, 2020
In this paper, we report on the application of the static headspace-gas chromatography-ion mobility spectrometry (SHS-GC-IMS) instrument in the field of wine aroma analysis and its potential in constructing a prediction model for the quality gradings of ...
Wenyao, Zhu, Frank, Benkwitz, Paul, Kilmartin   +2 more
core   +1 more source

FluoroMatch IM: An Interactive Software for PFAS Analysis by Ion Mobility Spectrometry

Environmental Science & Technology
Per- and polyfluoroalkyl substances (PFASs) are often present in complex mixtures at trace levels in environmental samples, posing difficulties for analytical chemists. Ion mobility offers highly replicable identifiers, enabling the use of community-based libraries for PFAS annotation in nontargeted analysis.
Rachel Smolinski, Jeremy P. Koelmel, Paul Stelben, David Weil, David Godri, David Schiessel, Michael Kummer, Sarah M. Stow, Sheher Mohsin, Lauren Royer, Alan McKenzie-Coe, Thomas Lubinsky, Daniel DeBord, Olivier Chevallier, Emma E. Rennie, Krystal J. Godri Pollitt, Carrie McDonough   +16 more
openaire   +2 more sources

Boosting Bifacial Output Power of Ag‐CIGS Solar Cells by Optimizing ITO Back‐Contact Thickness for Tandem Applications

Carbon Energy, EarlyView.
Optimized ITO back contact with pre‐Ga supply growth and Ag incorporation suppresses GaOx formation and interface recombination in bifacial CIGS solar cells. The devices achieve 17.25% front and 5.77% rear efficiency, delivering record bifacial power density up to 32.26 mW cm−2 in 4T perovskite/CIGS tandem architectures under enhanced albedo ...
Amanat Ali, Dae‐Ho Son, Wook Hyun Kim, Hyo Jeong Jo, Dong‐Hwan Jeon, Won‐Joon Kim, Van‐Quy Hoang, Jaebaek Lee, Bashiru Kadiri‐English, Jin‐Kyu Kang, Kee‐Jeong Yang, Shi‐Joon Sung, Dae‐Kue Hwang, Dae‐Hwan Kim   +13 more
wiley   +1 more source

Influence of Head‐to‐Tail Cyclization of Lanmodulin‐Inspired Peptides on Lanthanide Affinity and Structure

Chemistry – A European Journal, EarlyView.
The influence of head‐to‐tail cyclization, as well as the effect of ring expansion with an additional glycine on lanmodulin‐inspired peptides on the structure and lanthanide (Ln)‐binding behavior was investigated. While the decrease of structural flexibility can indeed increase the Ln affinity and peptide pre‐organization, it does not lead to an ...
Sophie M. Gutenthaler‐Tietze, Jerome Kretzschmar, Satoru Tsushima, Patrick Weis, Robin Steudtner, Björn Drobot, Lena J. Daumann   +6 more
wiley   +1 more source

Enhanced capabilities for imaging gangliosides in murine brain with matrix-assisted laser desorption/ionization and desorption electrospray ionization mass spectrometry coupled to ion mobility separation [PDF]

, 2016
The increased interest in lipidomics calls for improved yet simplified methods of lipid analysis. Over the past two decades, mass spectrometry imaging (MSI) has been established as a powerful technique for the analysis of molecular distribution of a ...
Ellis, Shane R., Heeren, Ron M. A., Jones, Emrys A., Skraskova, Karolina, Claude, Emmanuelle, Towers, Mark   +5 more
core   +1 more source

Ion Mobility Spectrometry in Food Analysis: Principles, Current Applications and Future Trends

Molecules, 2019
In the last decade, ion mobility spectrometry (IMS) has reemerged as an analytical separation technique, especially due to the commercialization of ion mobility mass spectrometers. Its applicability has been extended beyond classical applications such as
Maykel Hernández-Mesa, David Ropartz, Ana M. García-Campaña, Hélène Rogniaux, Gaud Dervilly-Pinel, Bruno Le Bizec   +5 more
doaj   +1 more source

First Evidence of “Earth Wax” Inside the Casting Molds from the Roman Era

Molecules, 2021
This research was focused on the analysis of material composition and organic residues present in three molds found in the Moravian region (Czech Republic) belonging to the Roman era.
Klára Jagošová, Jan Jílek, Pavel Fojtík, Ivan Čižmář, Miroslav Popelka, Ondřej Kurka, Lukáš Kučera   +6 more
doaj   +1 more source

Micro‐QuEChERS Extraction for Broad‐Spectrum LC‐QQQ‐MS Quantification of Nitazene Analogs in Plasma: A Validated Method With Casework Application

Drug Testing and Analysis, EarlyView.
Micro‐QuEChERS sample preparation coupled to LC‐QQQ‐MS enabled sensitive quantification of nitazene analogs in 100 μL of plasma. The validated method provided low detection limits and was successfully applied to an authentic intoxication case involving N‐pyrrolidino protonitazene, supporting clinical and forensic toxicology workflows.
Karla A. O. Souza, Náthaly C. B. F. Santos, Rafael Lanaro, Sara E. Walton, Alex J. Krotulski, Barry K. Logan, Mauricio Yonamine, Jose Luiz Costa   +7 more
wiley   +1 more source

Metabolic profiling of Escherichia coli by ion mobility-mass spectrometry with MALDI ion source [PDF]

, 2010
Comprehensive metabolome analysis using mass spectrometry (MS) often results in a complex mass spectrum and difficult data analysis resulting from the signals of numerous small molecules in the metabolome.
Albert J. Schultz, Geoffery Puzon, Prabha Dwivedi, Luying Xun, Tam, Maggie, Denis Langlais, Jackson, Shelley, Kimberly Kaplan, Amina Woods, Puzon, Geoffery, Schultz, Albert J, Langlais, Denis, William F. Siems, Siems, William F, Woods, Amina, Dwivedi, Prabha, Herbert H. Hill, Hill, Herbert H, Maggie Tam, Shelley Jackson, Xun, Luying   +20 more
core   +1 more source

Ion mobility spectrometry: history, characteristics and applications

Revista U.D.C.A Actualidad & Divulgación Científica, 2012
Ion mobility spectrometry (IMS) is an analytical technique that separates ions in the gas phase. Ions are separated at atmospheric pressure under the influence of an electric field, according to their size and shape.
Roberto Fernández Maestre
doaj   +1 more source