In situ diagnostics of the decomposition of silacyclobutane on a hot filament by vacuum ultraviolet laser ionization mass spectrometry

2007 ◽  
Vol 42 (5) ◽  
pp. 575-583 ◽  
Author(s):  
Y. J. Shi ◽  
B. Lo ◽  
L. Tong ◽  
X. Li ◽  
B. D. Eustergerling ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Vacuum Ultraviolet ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Laser Ionization ◽  
Ultraviolet Laser ◽  
Vacuum Ultraviolet Laser ◽  
Hot Filament ◽  
In Situ Diagnostics

In situ observation of particle-induced desorption from a self-assembled monolayer by laser-ionization mass spectrometry

2003 ◽  
Vol 82 (7) ◽  
pp. 1114-1116 ◽  
Author(s):  
E. Vandeweert ◽  
J. Bastiaansen ◽  
F. Vervaecke ◽  
P. Lievens ◽  
R. E. Silverans ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ionization Mass Spectrometry ◽  
In Situ Observation ◽  
Ionization Mass ◽  
Laser Ionization ◽  
Self Assembled Monolayer ◽  
Self Assembled

Selective C–C and C–N bond activation in dopamine and norepinephrine under deep ultraviolet laser irradiation

2019 ◽  
Vol 55 (28) ◽  
pp. 4015-4018 ◽  
Author(s):  
Haiming Wu ◽  
Mengdi Guo ◽  
Mengzhou Yang ◽  
Zhixun Luo ◽  
Klavs Hansen
Keyword(s):  
Mass Spectrometry ◽  
Laser Irradiation ◽  
Bond Activation ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Laser Ionization ◽  
Ultraviolet Laser ◽  
Deep Ultraviolet

Selective C–C bond and C–N bond activation in dopamine and norepinephrine is analyzed utilizing deep-ultraviolet laser ionization mass spectrometry (DUV-LIMS).

scholarly journals Studying Interfacial Dark Reactions of Glyoxal and Hydrogen Peroxide Using Vacuum Ultraviolet Single Photon Ionization Mass Spectrometry

Atmosphere ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 338
Author(s):  
Xiao Sui ◽  
Bo Xu ◽  
Jiachao Yu ◽  
Oleg Kostko ◽  
Musahid Ahmed ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Vacuum Ultraviolet ◽  
Fine Particles ◽  
Single Photon ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Single Photon Ionization ◽  
Tof Sims ◽  
Photon Ionization

Aqueous secondary organic aerosol (aqSOA) formation from volatile and semivolatile organic compounds at the air–liquid interface is considered as an important source of fine particles in the atmosphere. However, due to the lack of in situ detecting techniques, the detailed interfacial reaction mechanism and dynamics still remain uncertain. In this study, synchrotron-based vacuum ultraviolet single-photon ionization mass spectrometry (VUV SPI-MS) was coupled with the System for Analysis at the Liquid Vacuum Interface (SALVI) to investigate glyoxal dark oxidation products at the aqueous surface. Mass spectral analysis and determination of appearance energies (AEs) suggest that the main products of glyoxal dark interfacial aging are carboxylic acid related oligomers. Furthermore, the VUV SPI-MS results were compared and validated against those of in situ liquid time-of-flight secondary ion mass spectrometry (ToF-SIMS). The reaction mechanisms of the dark glyoxal interfacial oxidation, obtained using two different approaches, indicate that differences in ionization and instrument operation principles could contribute to their abilities to detect different oligomers. Therefore, the mechanistic differences revealed between the VUV SPI-MS and ToF-SIMS indicate that more in situ and real-time techniques are needed to investigate the contribution of the air–liquid interfacial reactions leading to aqSOA formation.

Ultrafast Deep-Ultraviolet Laser Ionization Mass Spectrometry Applicable To Identify Phenylenediamine Isomers

2018 ◽  
Vol 90 (17) ◽  
pp. 10635-10640 ◽  
Author(s):  
Haiming Wu ◽  
Chengqian Yuan ◽  
Hanyu Zhang ◽  
Guanhua Yang ◽  
Chaonan Cui ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Laser Ionization ◽  
Ultraviolet Laser ◽  
Deep Ultraviolet ◽  
Phenylenediamine Isomers

scholarly journals Chlorine activation by N<sub>2</sub>O<sub>5</sub>: simultaneous, in situ detection of ClNO<sub>2</sub> and N<sub>2</sub>O<sub>5</sub> by chemical ionization mass spectrometry

2009 ◽  
Vol 2 (1) ◽  
pp. 119-151 ◽  
Author(s):  
J. P. Kercher ◽  
T. P. Riedel ◽  
J. A. Thornton
Keyword(s):  
Mass Spectrometry ◽  
Detection Limit ◽  
Chemical Ionization ◽  
Ionization Mass Spectrometry ◽  
Chemical Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Nitrate Anion ◽  
Detection Scheme ◽  
In Situ Detection

Abstract. We report a new method for the simultaneous in situ detection of nitryl chloride (ClNO2) and dinitrogen pentoxide (N2O5) using chemical ionization mass spectrometry (CIMS). The technique relies on the formation and detection of iodide ion-molecule clusters, I(ClNO2)− and I(N2O5)−. The novel N2O5 detection scheme is direct. It does not suffer from high and variable chemical interferences, which are associated with the typical method of nitrate anion detection. We address the role of water vapor, electric field strength, and instrument zero determinations, which influence the overall sensitivity and detection limit of this method. For both species, the method demonstrates high sensitivity (>1 Hz/pptv), precision (~10% for 100 pptv in 1 s), and accuracy (~20%), the latter ultimately determined by the nitrogen dioxide (NO2) cylinder calibration standard and characterization of inlet effects. For the typically low background signals (<10 Hz) and high selectivity, we estimate signal-to-noise (S/N) ratios of 2 for 1 pptv in 60 s averages, but uncertainty associated with the instrumental zero currently leads to an ultimate detection limit of ~5 pptv for both species. We validate our approach for the simultaneous in situ measurement of ClNO2 and N2O5 while on board the Research Vessel (RV) Knorr as part of the ICEALOT 2008 Field Campaign.

Sign in / Sign up

Export Citation Format

Share Document