Results 181 to 190 of about 16,991 (224)

Study of Electrochemical Reactions Using Nanospray Desorption Electrospray Ionization Mass Spectrometry

Analytical Chemistry, 2012
The combination of electrochemistry (EC) and mass spectrometry (MS) is a powerful analytical tool for studying mechanisms of redox reactions, identification of products and intermediates, and online derivatization/recognition of analytes.
Pengyuan Liu, Julia Laskin, Howard D Dewald   +2 more
exaly   +2 more sources

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Synchronized Inductive Desorption Electrospray Ionization Mass Spectrometry

Angewandte Chemie - International Edition, 2011
Guangming Huang, Zheng Ouyang, R Graham Cooks   +2 more
exaly   +3 more sources

Desorption Electrospray Ionization of Explosives on Surfaces:  Sensitivity and Selectivity Enhancement by Reactive Desorption Electrospray Ionization

Analytical Chemistry, 2005
Desorption electrospray ionization (DESI), an ambient mass spectrometry technique, is used for trace detection of the explosives trinitrohexahydro-1,3,5-triazine (RDX), octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX), 2,4,6-trinitrotoluene (TNT), Pentaerythritol tetranitrate (PETN), and their plastic compositions (Composition C-4, Semtex-H ...
Ismael, Cotte-Rodríguez, Zoltán, Takáts, Nari, Talaty, Huanwen, Chen, R Graham, Cooks   +4 more
openaire   +2 more sources

Ion suppression effect in desorption electrospray ionization and electrospray ionization mass spectrometry

Rapid Communications in Mass Spectrometry, 2017
Rationale Although it is claimed that desorption electrospray ionization (DESI) causes less ion suppression effects than electrospray ionization (ESI), a related investigation with quantification measurement of ion suppression effects is absent.
Zheng Wang, Haijing Zhu, Guangming Huang
openaire   +2 more sources

Desorption Electrospray Ionization in a Small Pressure-Tight Enclosure

Analytical Chemistry, 2007
Desorption electrospray ionization (DESI) is made easier to implement, more robust, and exposure of the analyst to the sample is reduced by a novel DESI interface. This features a small, pressure-tight enclosure with fixed spatial relationships between the sprayer, surface, and sampling capillary.
Andre, Venter, R Graham, Cooks
openaire   +2 more sources

Synchronized Desorption Electrospray Ionization Mass Spectrometry Imaging

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 and reduce the amount of sample depleted during the ...
Comi, Troy J., Woo Ryu, Seung, Perry, Richard H.   +2 more
openaire   +3 more sources

Desorption electrospray ionization and matrix-assisted laser desorption/ionization as imaging approaches for biological samples analysis

Analytical and Bioanalytical Chemistry, 2023
The imaging of biological tissues can offer valuable information about the sample composition, which improves the understanding of analyte distribution in such complex samples. Different approaches using mass spectrometry imaging (MSI), also known as imaging mass spectrometry (IMS), enabled the visualization of the distribution of numerous metabolites,
Lanaia Ítala Louzeiro Maciel, Ricardo Alves Bernardo, Rafael Oliveira Martins, Almir Custodio Batista Junior, João Victor Ataíde Oliveira, Andréa Rodrigues Chaves, Boniek Gontijo Vaz   +6 more
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Desorption Electrospray Ionization: Achieving Rapid Sampling Rates

Analytical Chemistry, 2009
The sampling rate and imaging capabilities of desorption electrospray ionization (DESI) are examined using a rotating sample platform combined with Hadamard transform time-of-flight mass spectrometry (HTTOFMS), a multiplexed time-of-flight technique that allows for millisecond acquisition of full mass-to-charge ratio scans.
Griffin K, Barbula, Matthew D, Robbins, Oh Kyu, Yoon, Ignacio, Zuleta, Richard N, Zare   +4 more
openaire   +2 more sources

Probe-Substrate Distance Control in Desorption Electrospray Ionization

Journal of the American Society for Mass Spectrometry, 2017
We introduce probe-substrate distance (Dps)-control to desorption electrospray ionization (DESI) and report a systematic investigation of key experimental parameters. Examination of voltage, flow rate, and nebulizing gas pressure suggests as Dps decreases, the distance-dependent spray current increases, until a critical point. At the critical point the
Tyler J, Yarger, Elizabeth M, Yuill, Lane A, Baker   +2 more
openaire   +2 more sources

Desorption electrospray ionization mass spectrometry of intact bacteria

Journal of Mass Spectrometry, 2007
AbstractDesorption electrospray ionization (DESI) mass spectrometry (MS) was used to differentiate seven bacteria species on the basis of their measured DESI‐mass spectral profile. Both gram‐positive and gram‐negative bacteria were tested and included Escherichia coli, Staphyloccocus aureus, Enterococcus sp., Bordetella bronchiseptica, Bacillus ...
Mohammed A, Meetani, Yong-Seung, Shin, Shaofeng, Zhang, Richard, Mayer, Franco, Basile   +4 more
openaire   +2 more sources