A combined single photon ionization and photoelectron ionization source for orthogonal acceleration time-of-flight mass spectrometer

2010 ◽  
Vol 295 (1-2) ◽  
pp. 60-64 ◽  
Author(s):  
Qinghao Wu ◽  
Lei Hua ◽  
Keyong Hou ◽  
Huapeng Cui ◽  
Ping Chen ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Single Photon ◽  
Time Of Flight ◽  
Ionization Source ◽  
Acceleration Time ◽  
Single Photon Ionization ◽  
Flight Mass Spectrometer ◽  
Orthogonal Acceleration ◽  
Photon Ionization

Vacuum Ultraviolet Single-Photon Ionization Time-of-Flight Mass Spectrometer

2011 ◽  
Vol 39 (10) ◽  
pp. 1470-1475 ◽  
Author(s):  
Guo-Bin TAN ◽  
Wei GAO ◽  
Zheng-Xu HUANG ◽  
Yi HONG ◽  
Zhong FU ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Vacuum Ultraviolet ◽  
Single Photon ◽  
Time Of Flight ◽  
Ionization Time ◽  
Single Photon Ionization ◽  
Flight Mass Spectrometer ◽  
Photon Ionization

scholarly journals Development of a Portable Single Photon Ionization-Photoelectron Ionization Time-of-Flight Mass Spectrometer

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Yunguang Huang ◽  
Jinxu Li ◽  
Bin Tang ◽  
Liping Zhu ◽  
Keyong Hou ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Mass Spectrometer ◽  
Single Photon ◽  
Time Of Flight ◽  
Single Photon Ionization ◽  
Flight Mass Spectrometer ◽  
Limit Of Quantitation ◽  
Volatile Organic ◽  
Photon Ionization

A vacuum ultraviolet lamp based single photon ionization- (SPI-) photoelectron ionization (PEI) portable reflecting time-of-flight mass spectrometer (TOFMS) was designed for online monitoring gas samples. It has a dual mode ionization source: SPI for analyte with ionization energy (IE) below 10.6 eV and PEI for IE higher than 10.6 eV. Two kinds of sampling inlets, a capillary inlet and a membrane inlet, are utilized for high concentration and trace volatile organic compounds, respectively. A mass resolution of 1100 atm/z64 has been obtained with a total size of 40 × 31 × 29 cm, the weight is 27 kg, and the power consumption is only 70 W. A mixture of benzene, toluene, and xylene (BTX), SO2, and discharging products of SF6were used to test its performance, and the result showed that the limit of quantitation for BTX is as low as 5 ppbv (S/N= 10 : 1) with linear dynamic ranges greater than four orders of magnitude. The portable TOFMS was also evaluated by analyzing volatile organic compounds from wine and decomposition products of SF6inside of a gas-insulated switchgear.

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