Results 21 to 30 of about 37,190 (246)

Enhancing Metabolomic Coverage in Positive Ionization Mode Using Dicationic Reagents by Infrared Matrix-Assisted Laser Desorption Electrospray Ionization

Metabolites, 2021
Mass spectrometry imaging is a powerful tool to analyze a large number of metabolites with their spatial coordinates collected throughout the sample. However, the significant differences in ionization efficiency pose a big challenge to metabolomic mass ...
Ying Xi, David C. Muddiman
doaj   +1 more source

A Low-Cost, Simplified Platform of Interchangeable, Ambient Ionization Sources for Rapid, Forensic Evidence Screening on Portable Mass Spectrometric Instrumentation

Instruments, 2018
Portable mass spectrometers (MS) are becoming more prevalent due to improved instrumentation, commercialization, and the robustness of new ionization methodologies.
Patrick W. Fedick, William L. Fatigante, Zachary E. Lawton, Adam E. O’Leary, Seth. E. Hall, Ryan M. Bain, Stephen T. Ayrton, Joseph A. Ludwig, Christopher C. Mulligan   +8 more
doaj   +1 more source

Analysis of Pesticide Residues on Fruit Using Swab Spray Ionization Mass Spectrometry

Molecules, 2023
The vast quantity and high variety of pesticides globally used in agriculture entails considerable risks for the environment and requires ensuring the safety of food products.
Thomas Michael Muggli, Stefan Schürch
doaj   +1 more source

APLICAÇÃO DA ESPECTROMETRIA DE MASSAS COM IONIZAÇÃO POR PAPER SPRAY E TÉCNICAS RELACIONADAS NA ANÁLISE DIRETA DE MATRIZES BIOLÓGICAS PARA DETECÇÃO DE DROGAS - UMA REVISÃO [PDF]

Química Nova, 2023
In recent years, technological development in analytical instrumentation has progressed vigorously, which has allowed the evolution of analytical techniques that play an indispensable role within society, highlighting mass spectrometry.
João Francisco Allochio Filho, Bruna Carneiro Pires, Nayara A. Santos, Sara Joaquina Inocencio Dionisio, Nathália dos S. Conceição, Amanda Eiriz Feu, Warley de Souza Borges, Valdemar Lacerda Jr., Wanderson Romão   +8 more
doaj   +1 more source

Aggregation of Multimodal ICE-MS Data into Joint Classifier Increases Quality of Brain Cancer Tissue Classification

Data, 2022
Mass spectrometry fingerprinting combined with multidimensional data analysis has been proposed in surgery to determine if a biopsy sample is a tumor.
Anatoly A. Sorokin, Denis S. Bormotov, Denis S. Zavorotnyuk, Vasily A. Eliferov, Konstantin V. Bocharov, Stanislav I. Pekov, Evgeny N. Nikolaev, Igor A. Popov   +7 more
doaj   +1 more source

Ambient Ionization: A Dream for the Surgical Oncologist? [PDF]

Clinical Chemistry, 2016
One challenge for the cancer surgeon is to consistently distinguish tumor from healthy tissue and definitively remove the tumor with clean margins. The pathologist plays a key role in confirming the identity of the tissue removed, but it takes time to remove the sample, send it to the pathologist, and receive an expert analysis.
Vikram Sheel, Kumar, Molly, Webster
openaire   +2 more sources

Response in Ambient Low Temperature Plasma Ionization Compared to Electrospray and Atmospheric Pressure Chemical Ionization for Mass Spectrometry

International Journal of Analytical Chemistry, 2018
Modern technical evolution made mass spectrometry (MS) an absolute must for analytical chemistry in terms of application range, detection limits and speed.
Andreas Kiontke, Susan Billig, Claudia Birkemeyer   +2 more
doaj   +1 more source

Direct detection of fungal siderophores on bats with white-nose syndrome via fluorescence microscopy-guided ambient ionization mass spectrometry. [PDF]

PLoS ONE, 2015
White-nose syndrome (WNS) caused by the pathogenic fungus Pseudogymnoascus destructans is decimating the populations of several hibernating North American bat species.
Samantha J Mascuch, Wilna J Moree, Cheng-Chih Hsu, Gregory G Turner, Tina L Cheng, David S Blehert, A Marm Kilpatrick, Winifred F Frick, Michael J Meehan, Pieter C Dorrestein, Lena Gerwick   +10 more
doaj   +1 more source

Thermometer Ions, Internal Energies, and In-Source Fragmentation in Ambient Ionization. [PDF]

Mass Spectrom Rev
ABSTRACT Ionization and fragmentation are at the core of mass spectrometry. But they are not necessarily separated in space, as in‐source fragmentation can also occur. Here, we survey the literature published since our 2005 review on the internal energy and fragmentation in electrospray ionization sources.
Bertrand E, Gabelica V.
europepmc   +3 more sources

Ambient Mass Spectrometry and Ambient ionization Mass Spectrometry Imaging in Rapid Food Safety Detection [PDF]

Shipin Kexue
With the growing demand for food safety detection, traditional analytical methods face significant technical challenges, such as lengthy detection cycles and low efficiency, particularly when dealing with complex food matrices and large sample volumes ...
YUAN Yuhang, LIAN Jie, SHAO Zhenchao, ZENG Dawei, WANG Huichao, LI Meng
doaj   +1 more source