Development and Application of A Membrane Inlet-Single Photon Ionization-Mass Spectrometer for On line Analysis Volatile Organic Compounds in Water

2010 ◽  
Vol 38 (5) ◽  
pp. 760-764 ◽  
Author(s):  
Hua-Peng CUI ◽  
Ke-Yong HOU ◽  
Qing-Hao WU ◽  
Lei HUA ◽  
Ping CHEN ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Mass Spectrometer ◽  
Single Photon ◽  
Ionization Mass ◽  
Single Photon Ionization ◽  
Volatile Organic ◽  
On Line ◽  
Photon Ionization ◽  
Line Analysis

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.

Real time analysis of trace volatile organic compounds in ambient air: a comparison between membrane inlet single photon ionization mass spectrometry and proton transfer reaction mass spectrometry

2020 ◽  
Vol 12 (35) ◽  
pp. 4343-4350
Author(s):  
Zhujun Yu ◽  
Chao Liu ◽  
Hongzhi Niu ◽  
Manman Wu ◽  
Wei Gao ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Volatile Organic Compounds ◽  
Real Time ◽  
Organic Compounds ◽  
Single Photon ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Single Photon Ionization ◽  
Volatile Organic ◽  
Photon Ionization

Membrane single photon ionization mass spectrometry enables real-time monitoring of volatile organic compounds at trace levels, providing important complementary information on aromatics and alkanes in the air.

Membrane introduction system for trace analysis of volatile organic compounds using a single photon ionization time-of-flight mass spectrometer

2010 ◽  
Vol 296 (1-3) ◽  
pp. 25-29 ◽  
Author(s):  
Yukio Yamamoto ◽  
Nozomu Kanno ◽  
Kenichi Tonokura ◽  
Akihiro Yabushita ◽  
Masahiro Kawasaki
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Mass Spectrometer ◽  
Trace Analysis ◽  
Single Photon ◽  
Time Of Flight ◽  
Ionization Time ◽  
Flight Mass Spectrometer ◽  
Volatile Organic ◽  
Photon Ionization

On-line Analysis of Flavor Compounds in Toothpastes by Single Photon Ionization Mass Spectrometry

2013 ◽  
Vol 40 (12) ◽  
pp. 1883-1889
Author(s):  
Yuan-Yuan XIE ◽  
Lei HUA ◽  
Ke-Yong HOU ◽  
Ping CHEN ◽  
Hua-Peng CUI ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Single Photon ◽  
Ionization Mass Spectrometry ◽  
Flavor Compounds ◽  
Ionization Mass ◽  
Single Photon Ionization ◽  
On Line ◽  
Photon Ionization ◽  
Line Analysis

Coupling of stir bar sorptive extraction with single photon ionization mass spectrometry for determination of volatile organic compounds in water

The Analyst ◽  
2012 ◽  
Vol 137 (2) ◽  
pp. 513-518 ◽  
Author(s):  
Huapeng Cui ◽  
Lei Hua ◽  
Keyong Hou ◽  
Jing Wu ◽  
Ping Chen ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Single Photon ◽  
Stir Bar Sorptive Extraction ◽  
Ionization Mass ◽  
Sorptive Extraction ◽  
Volatile Organic ◽  
Photon Ionization

scholarly journals VOC Monitoring and Ozone Generation Potential Analysis Based on a Single-Photon Ionization Time-of-Flight Mass Spectrometer

Photonics ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 61
Author(s):  
Yuefeng Zhao ◽  
Yurong Zhang ◽  
Jing Gao ◽  
Xu Wang ◽  
Hui Li ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Mass Spectrometer ◽  
Single Photon ◽  
Time Of Flight ◽  
Ionization Time ◽  
Ozone Generation ◽  
Flight Mass Spectrometer ◽  
Volatile Organic ◽  
Photon Ionization

The single-photon ionization time-of-flight mass spectrometer (SPI-TOFMS), which has high sensitivity, high accuracy, and a short response time, is effective for the real-time monitoring of volatile organic compounds (VOCs). In this study, the theory and structural composition of the SPI-TOFMS are described. Its detection limit can reach parts per billion by volume (ppbv), the dynamic range is better than three orders of magnitude, and the response speed can reach milliseconds. The distribution of VOCs and the ozone generation contribution rate in the Hefei Economic Development Zone are analyzed using this instrument with a vehicle platform for online navigation detection. The experimental results showed that aromatics were the primary components of the total volatile organic compounds (TVOCs), and aromatics and alkenes contributed more to ozone formation in an industrial manufacturing area. This research indicates that the SPI-TOFMS can rapidly and accurately conduct online monitoring of VOCs in industrial development zones. In addition, it has been applied in the fields of atmospheric composition observation, environmental monitoring, and industrial VOC leakage monitoring.

scholarly journals Using collision-induced dissociation to constrain sensitivity of ammonia chemical ionization mass spectrometry (NH<sub>4</sub><sup>+</sup> CIMS) to oxygenated volatile organic compounds

2019 ◽  
Vol 12 (3) ◽  
pp. 1861-1870 ◽  
Author(s):  
Alexander Zaytsev ◽  
Martin Breitenlechner ◽  
Abigail R. Koss ◽  
Christopher Y. Lim ◽  
James C. Rowe ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Mass Spectrometer ◽  
Chemical Ionization ◽  
Chemical Ionization Mass Spectrometry ◽  
Collision Induced Dissociation ◽  
Ionization Mass ◽  
Oxygenated Volatile Organic Compounds ◽  
Volatile Organic

Abstract. Chemical ionization mass spectrometry (CIMS) instruments routinely detect hundreds of oxidized organic compounds in the atmosphere. A major limitation of these instruments is the uncertainty in their sensitivity to many of the detected ions. We describe the development of a new high-resolution time-of-flight chemical ionization mass spectrometer that operates in one of two ionization modes: using either ammonium ion ligand-switching reactions such as for NH4+ CIMS or proton transfer reactions such as for proton-transfer-reaction mass spectrometer (PTR-MS). Switching between the modes can be done within 2 min. The NH4+ CIMS mode of the new instrument has sensitivities of up to 67 000 dcps ppbv−1 (duty-cycle-corrected ion counts per second per part per billion by volume) and detection limits between 1 and 60 pptv at 2σ for a 1 s integration time for numerous oxygenated volatile organic compounds. We present a mass spectrometric voltage scanning procedure based on collision-induced dissociation that allows us to determine the stability of ammonium-organic ions detected by the NH4+ CIMS instrument. Using this procedure, we can effectively constrain the sensitivity of the ammonia chemical ionization mass spectrometer to a wide range of detected oxidized volatile organic compounds for which no calibration standards exist. We demonstrate the application of this procedure by quantifying the composition of secondary organic aerosols in a series of laboratory experiments.

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