High-pressure photoionization mass spectrometry. II. Thermal H- (H.deg.) and H2- (H2.deg.) transfer reactions occurring in alkane-olefin mixtures

1970 ◽  
Vol 92 (10) ◽  
pp. 2937-2943 ◽  
Author(s):  
L. Wayne. Sieck ◽  
Stuart K. Searles
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Transfer Reactions ◽  
Photoionization Mass Spectrometry

scholarly journals Direct time-resolved detection and quantification of key reactive intermediates in diethyl ether oxidation at T = 450–600 K

2020 ◽  
Vol 22 (42) ◽  
pp. 24649-24661
Author(s):  
Maria Demireva ◽  
Kendrew Au ◽  
Leonid Sheps
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Diethyl Ether ◽  
Vacuum Ultraviolet ◽  
Reactive Intermediates ◽  
Reaction Intermediates ◽  
Time Resolved ◽  
Photoionization Mass Spectrometry ◽  
Ionization Radiation ◽  
Detection And Quantification

High-pressure multiplexed photoionization mass spectrometry (MPIMS) with tunable vacuum ultraviolet (VUV) ionization radiation from the Lawrence Berkeley Labs Advanced Light Source is used to characterize and quantify key reaction intermediates in the oxidation of diethyl ether (DEE).

Ion–molecule reactions in dimethylsulfoxide by high pressure photoionization mass spectrometry

1980 ◽  
Vol 58 (4) ◽  
pp. 376-380 ◽  
Author(s):  
John A. Stone ◽  
Margaret S. Lin
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Photon Energy ◽  
Rate Constant ◽  
Pressure Range ◽  
Low Pressure ◽  
Photoionization Mass Spectrometry ◽  
Ion Molecule Reactions

Dimethylsulfoxide (DMSO) has been photoionized at 10.0 and 11.7 eV over the pressure range 0.3–210 mTorr. The rate constant for the disappearance of DMSO+ is 1.0 × 10−9 cm3 molecule−1 s−1, independent of photon energy. The major products at low pressure are CH3SO(CH3SO)CH3+ and CH3SOHCH3+ while at high pressure the ion series (DMSO)nH+ predominates with n ≤ 5. In experiments with mixtures of DMSO and water or methanol very little mixed solvation of the proton was observed although isotopic D/H exchange between D2O and (DMSO)2H+ is facile.

A high-pressure reactor coupled to synchrotron radiation photoionization mass spectrometry

2020 ◽  
Vol 91 (9) ◽  
pp. 093102
Author(s):  
Rui You ◽  
Shengsheng Yu ◽  
Jiuzhong Yang ◽  
Yang Pan ◽  
Weixin Huang
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Synchrotron Radiation ◽  
Photoionization Mass Spectrometry

scholarly journals Ethoxylated Butoxyethanol-BADGE Adducts—New Potential Migrants from Epoxy Resin Can Coating Material

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3682
Author(s):  
Monika Beszterda ◽  
Małgorzata Kasperkowiak ◽  
Magdalena Frańska ◽  
Sandra Jęziołowska ◽  
Rafał Frański
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Liquid Chromatography ◽  
Epoxy Resin ◽  
Diglycidyl Ether ◽  
Ionization Mass ◽  
Coating Materials ◽  
Oxyethylene Unit ◽  
Bisphenol A Diglycidyl Ether ◽  
Product Ions

The acetonitrile extracts of can-coating materials have been analyzed by using high-pressure liquid chromatography/electrospray ionization-mass spectrometry (HPLC/ESI-MS). On the basis of detected ions [M + H]+, [M + NH4]+, [M + Na]+ and product ions, the ethoxylated butoxyethanol-bisphenol A diglycidyl ether adducts were identified in two of the analyzed extracts. Although the oxyethylene unit-containing compounds are widely used for the production of different kinds of materials, the ethoxylated species have not been earlier detected in epoxy resin can-coatings.

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