A vacuum ultraviolet photoionization ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
A vacuum ultraviolet photoionization time-of-flight mass spectrometer with high sensitivity for study of gas-phase radical reaction in a flow tube
Auteur(s) :
Wen, Zuoying [Auteur]
Anhui Institute of Optics and Fine Mechanics
Tang, Xiaofeng [Auteur]
Anhui Institute of Optics and Fine Mechanics
Wang, Chengcheng [Auteur]
Anhui Institute of Optics and Fine Mechanics
Fittschen, Christa [Auteur]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Wang, Tao [Auteur]
Anhui Institute of Optics and Fine Mechanics
Zhang, Cuihong [Auteur]
Anhui Institute of Optics and Fine Mechanics
Yang, Jiuzhong [Auteur]
National Synchrotron Radiation Laboratory [NSRL]
Pan, Yang [Auteur]
National Synchrotron Radiation Laboratory [NSRL]
Liu, Fuyi [Auteur]
National Synchrotron Radiation Laboratory [NSRL]
Zhang, Weijun [Auteur]
Anhui Institute of Optics and Fine Mechanics
Anhui Institute of Optics and Fine Mechanics
Tang, Xiaofeng [Auteur]
Anhui Institute of Optics and Fine Mechanics
Wang, Chengcheng [Auteur]
Anhui Institute of Optics and Fine Mechanics
Fittschen, Christa [Auteur]
Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 [PC2A]
Wang, Tao [Auteur]
Anhui Institute of Optics and Fine Mechanics
Zhang, Cuihong [Auteur]
Anhui Institute of Optics and Fine Mechanics
Yang, Jiuzhong [Auteur]
National Synchrotron Radiation Laboratory [NSRL]
Pan, Yang [Auteur]
National Synchrotron Radiation Laboratory [NSRL]
Liu, Fuyi [Auteur]
National Synchrotron Radiation Laboratory [NSRL]
Zhang, Weijun [Auteur]
Anhui Institute of Optics and Fine Mechanics
Titre de la revue :
International Journal of Chemical Kinetics
Nom court de la revue :
Int. J. Chem. Kinet.
Numéro :
51
Pagination :
178-188
Éditeur :
Wiley
Date de publication :
2019-03-19
ISSN :
0538-8066
Mot(s)-clé(s) en anglais :
Photoionization mass spectrometer
radical reaction
kinetics
flow tube
methyl radical
methyl peroxy radical
radical reaction
kinetics
flow tube
methyl radical
methyl peroxy radical
Discipline(s) HAL :
Physique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]
Chimie/Chimie théorique et/ou physique
Chimie/Chimie théorique et/ou physique
Résumé en anglais : [en]
Photoionization mass spectrometry (PIMS) as a powerful analytical method has been widely utilized and provided valuable insight in the field of gas-phase reactions. Here, a highly sensitive vacuum ultraviolet (VUV) ...
Lire la suite >Photoionization mass spectrometry (PIMS) as a powerful analytical method has been widely utilized and provided valuable insight in the field of gas-phase reactions. Here, a highly sensitive vacuum ultraviolet (VUV) photoionization time-of-flight mass spectrometer combined with a microwave discharge generator and a fast flow tube reactor has been developed to study radical reactions of atmospheric and combustioninterests. Two kinds of continuous light sources, the tunable VUV synchrotron radiation at Hefei, China for isomer-specific product detection and a commercial krypton discharge lamp for time-consuming kinetic measurements, are employed as photoionization sources in the apparatus. A multiplexed detection with high sensitivity (the limit of detection, LOD ~ 0.8 ppb) and high mass resolution (M/ΔM ~ 2100) has been approached. As representative examples, the self-reaction of the methyl radical, CH3, and the reaction of the methyl radical with molecular oxygen are studied and multiple species including reactive radicals and isomeric/isobaric products are detected and identified. In addition, some preliminary results related to the reaction kinetics are also presented.Lire moins >
Lire la suite >Photoionization mass spectrometry (PIMS) as a powerful analytical method has been widely utilized and provided valuable insight in the field of gas-phase reactions. Here, a highly sensitive vacuum ultraviolet (VUV) photoionization time-of-flight mass spectrometer combined with a microwave discharge generator and a fast flow tube reactor has been developed to study radical reactions of atmospheric and combustioninterests. Two kinds of continuous light sources, the tunable VUV synchrotron radiation at Hefei, China for isomer-specific product detection and a commercial krypton discharge lamp for time-consuming kinetic measurements, are employed as photoionization sources in the apparatus. A multiplexed detection with high sensitivity (the limit of detection, LOD ~ 0.8 ppb) and high mass resolution (M/ΔM ~ 2100) has been approached. As representative examples, the self-reaction of the methyl radical, CH3, and the reaction of the methyl radical with molecular oxygen are studied and multiple species including reactive radicals and isomeric/isobaric products are detected and identified. In addition, some preliminary results related to the reaction kinetics are also presented.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Non spécifiée
Établissement(s) :
Université de Lille
CNRS
CNRS
Équipe(s) de recherche :
PhysicoChimie de l'Atmosphère (PCA)
Date de dépôt :
2020-10-07T13:12:33Z
2020-10-08T06:54:19Z
2020-10-08T06:54:19Z
Fichiers
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