Solvation in Electrospray Mass Spectrometry:  Effects on the Reaction Kinetics of Fragmentation Mediated by Ion-Neutral Complexes

2005 ◽  
Vol 70 (13) ◽  
pp. 5111-5118 ◽  
Author(s):  
Ya-Ping Tu ◽  
Limin He ◽  
William Fitch ◽  
Michelle Lam
Keyword(s):  
Mass Spectrometry ◽  
Reaction Kinetics ◽  
Electrospray Mass Spectrometry ◽  
Kinetics Of

Surface Reaction Kinetics of CH3in CH4RF Discharge Studied by Time-Resolved Threshold Ionization Mass Spectrometry

1997 ◽  
Vol 36 (Part 1, No. 7B) ◽  
pp. 4752-4755 ◽  
Author(s):  
Masaharu Shiratani ◽  
Jacques Jolly ◽  
Hervé Videlot ◽  
Jérôme Perrin
Keyword(s):  
Mass Spectrometry ◽  
Reaction Kinetics ◽  
Surface Reaction ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Time Resolved ◽  
Threshold Ionization ◽  
Surface Reaction Kinetics ◽  
Kinetics Of

Reaction Kinetics of Ground State Fluorine, F(2P), Atoms. I. Measurement of Fluorine Atom Concentrations and the Rates of Reactions F + CHF3 and F + Cl2 using Mass Spectrometry

1973 ◽  
Vol 51 (21) ◽  
pp. 3596-3604 ◽  
Author(s):  
Michael A. A. Clyne ◽  
Donald J. McKenney ◽  
Ronald. F. Walker
Keyword(s):  
Mass Spectrometry ◽  
Reaction Kinetics ◽  
Ground State ◽  
Fluorine Atom ◽  
Flow Reactor ◽  
Bimolecular Reaction ◽  
Inlet System ◽  
Fast Flow ◽  
Kinetics Of ◽  
Fast Flow Reactor

Reactions of F(2P) atoms generated by a 2.45 GHz discharge in dilute F2 + He mixtures have been studied mass spectrometrically with a beam inlet system from a fast flow reactor. F atom concentrations have been measured from the consumption of Cl2 in the simple and extremely rapid bimolecular reaction 1[Formula: see text]k1 was determined to be (1.1 ± 0.3) × 10−10 cm3 molecule−1 s−1 at 300 °K.Rate measurements for the reaction 2, which forms CF3 radicals, are reported, over the range 301 to 667 °K,[Formula: see text][Formula: see text]A less detailed survey of the rates at 298 °K of a series of reactions of F with H2, CH4, CH3Cl, CH2Cl2, and CHCl3, is also given; in these cases, the source of F was a discharge in CF4 + Ar, and [F] was measured by titration with ClNO.

Molecular Insight into Real-Time Reaction Kinetics of Free Radical Polymerization from the Vapor Phase by In-Situ Mass Spectrometry

2021 ◽  
Vol 125 (7) ◽  
pp. 1661-1667
Author(s):  
Stefan Schröder ◽  
Alexander M. Hinz ◽  
Thomas Strunskus ◽  
Franz Faupel
Keyword(s):  
Mass Spectrometry ◽  
Free Radical ◽  
Reaction Kinetics ◽  
Real Time ◽  
Radical Polymerization ◽  
Vapor Phase ◽  
Free Radical Polymerization ◽  
Kinetics Of ◽  
Insight Into

Folding Kinetics of the S100A11 Protein Dimer Studied by Time-Resolved Electrospray Mass Spectrometry and Pulsed Hydrogen−Deuterium Exchange†

Biochemistry ◽  
2006 ◽  
Vol 45 (9) ◽  
pp. 3005-3013 ◽  
Author(s):  
Jingxi Pan ◽  
Anne C. Rintala-Dempsey ◽  
Yu Li ◽  
Gary S. Shaw ◽  
Lars Konermann
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Deuterium Exchange ◽  
Hydrogen Deuterium Exchange ◽  
Folding Kinetics ◽  
Time Resolved ◽  
Protein Dimer ◽  
Hydrogen Deuterium ◽  
Kinetics Of

Subunit Disassembly and Unfolding Kinetics of Hemoglobin Studied by Time-Resolved Electrospray Mass Spectrometry†

Biochemistry ◽  
2004 ◽  
Vol 43 (46) ◽  
pp. 14792-14801 ◽  
Author(s):  
Douglas A. Simmons ◽  
Derek J. Wilson ◽  
Gilles A. Lajoie ◽  
Amanda Doherty-Kirby ◽  
Lars Konermann
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Time Resolved ◽  
Unfolding Kinetics ◽  
Kinetics Of

New Trends in the Chemistry of Iron(III) Citrate Complexes: Correlations between X-ray Structures and Solution Species Probed by Electrospray Mass Spectrometry and Kinetics of Iron Uptake from Citrate by Iron Chelators

2005 ◽  
Vol 11 (7) ◽  
pp. 2207-2219 ◽  
Author(s):  
Isabelle Gautier-Luneau ◽  
Claire Merle ◽  
Delphine Phanon ◽  
Colette Lebrun ◽  
Fr�d�ric Biaso ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Iron Uptake ◽  
Electrospray Mass Spectrometry ◽  
Iron Chelators ◽  
X Ray ◽  
Kinetics Of

scholarly journals Reduction of aflatoxin B1 during tortilla production and identification of degradation by-products by direct-injection electrospray mass spectrometry

2015 ◽  
Vol 57 (1) ◽  
pp. 50 ◽  
Author(s):  
Abigail Moreno-Pedraza ◽  
Laura Valdés-Santiago ◽  
Laura Josefina Hernández-Valadez ◽  
Alicia Rodríguez-Sixtos Higuera ◽  
Robert Winkler ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Aflatoxin B1 ◽  
Room Temperature ◽  
Electrospray Mass Spectrometry ◽  
Direct Injection ◽  
Alkaline Ph ◽  
Principal Factors ◽  
Mass Spectometry ◽  
Kinetics Of ◽  
By Products

Objective. To determine the effect of pH, and exposure time over the inactivation of aflatoxin B1 (AFB1) during the tortilla making process as well as the degradative molecules generated. Materials and methods. Inactivation of AFB1 in maize-dough with alkaline pH and in alkaline methanolic solutions was determined by HPLC. Kinetics of time exposure of AFB1 in methanolic solution and the degradative products were analyzed by direct injection electrospray mass spectometry (DIESI-MS). Results. The alkaline pH of the maize-dough after nixtamalización between 10.2, and 30-40 minutes of resting at room temperature allows the 100% reduction of AFB1. DIESI-MS analysis of the extracts indicated the presence of two degradation molecules from AFB1.Conclusion. The alkaline pH of maize-dough and resting time are the principal factors involved in diminishing AFB1 levels in tortillas. A procedure to the tortilla making process is proposed, which allows the reduction of remnant AFB1, avoiding the accumulative effect over consumers.

Impact Of Synthesis Route on the Water Oxidation Kinetics of Hematite Photoanodes

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Charge Accumulation ◽  
Optical Signals ◽  
Current Voltage ◽  
Voltage Performance ◽  
Kinetics Of

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>

Zeolites Fit For A Crown: Probing Host-Guest Interactions with Thermogravimetric Methods

2018 ◽  
Author(s):  
Asel Sartbaeva ◽  
Paul R. Raithby ◽  
Remi Castaing ◽  
Antony Nearchou
Keyword(s):  
Mass Spectrometry ◽  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Petrochemical Industry ◽  
Rational Use ◽  
New Methodologies ◽  
First Time ◽  
Kinetics Of

Through a combination of thermogravimetry, mass spectrometry and differential thermal analysis, we demonstrate for the first time that all four zeolites show experimental differences in their host-guest interactions with 18C6. In addition, we have estimated the kinetics of 18C6 decomposition, which is a technique that has not been applied to zeolites previously. Using these findings as a toolkit, a more rational use of OSDAs can be utilised to prepare designer zeolites. Furthermore, the new methodologies presented herein can be applied to current zeolites, such as MFI-type zeolites used in the petrochemical industry.

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