Quantitative analysis of transient surface reactions on planar catalyst with time-resolved time-of-flight mass spectrometry

2007 ◽  
Vol 78 (10) ◽  
pp. 104102 ◽  
Author(s):  
Kohei Okumura ◽  
Yoshiyuki Sakamoto ◽  
Tomoyuki Kayama ◽  
Yoshimi Kizaki ◽  
Hirofumi Shinjoh ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Quantitative Analysis ◽  
Surface Reactions ◽  
Time Of Flight ◽  
Time Resolved ◽  
Flight Mass Spectrometry

scholarly journals An automated gas chromatography time-of-flight mass spectrometry instrument for the quantitative analysis of halocarbons in air

2016 ◽  
Vol 9 (1) ◽  
pp. 179-194 ◽  
Author(s):  
F. Obersteiner ◽  
H. Bönisch ◽  
A. Engel
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Quantitative Analysis ◽  
Time Of Flight ◽  
Resolving Power ◽  
Accurate Mass ◽  
Mass Spectrometry Instrument ◽  
Flight Mass Spectrometry ◽  
Mass Resolving Power ◽  
Mass Information

Abstract. We present the characterization and application of a new gas chromatography time-of-flight mass spectrometry instrument (GC-TOFMS) for the quantitative analysis of halocarbons in air samples. The setup comprises three fundamental enhancements compared to our earlier work (Hoker et al., 2015): (1) full automation, (2) a mass resolving power R = m/Δm of the TOFMS (Tofwerk AG, Switzerland) increased up to 4000 and (3) a fully accessible data format of the mass spectrometric data. Automation in combination with the accessible data allowed an in-depth characterization of the instrument. Mass accuracy was found to be approximately 5 ppm in mean after automatic recalibration of the mass axis in each measurement. A TOFMS configuration giving R = 3500 was chosen to provide an R-to-sensitivity ratio suitable for our purpose. Calculated detection limits are as low as a few femtograms by means of the accurate mass information. The precision for substance quantification was 0.15 % at the best for an individual measurement and in general mainly determined by the signal-to-noise ratio of the chromatographic peak. Detector non-linearity was found to be insignificant up to a mixing ratio of roughly 150 ppt at 0.5 L sampled volume. At higher concentrations, non-linearities of a few percent were observed (precision level: 0.2 %) but could be attributed to a potential source within the detection system. A straightforward correction for those non-linearities was applied in data processing, again by exploiting the accurate mass information. Based on the overall characterization results, the GC-TOFMS instrument was found to be very well suited for the task of quantitative halocarbon trace gas observation and a big step forward compared to scanning, quadrupole MS with low mass resolving power and a TOFMS technique reported to be non-linear and restricted by a small dynamical range.

T-Jump/time-of-flight mass spectrometry for time-resolved analysis of energetic materials

2009 ◽  
Vol 23 (1) ◽  
pp. 194-202 ◽  
Author(s):  
Lei Zhou ◽  
Nicholas Piekiel ◽  
Snehaunshu Chowdhury ◽  
Michael R. Zachariah
Keyword(s):  
Mass Spectrometry ◽  
Energetic Materials ◽  
Time Of Flight ◽  
Time Resolved ◽  
Flight Mass Spectrometry ◽  
Jump Time

Time-of-flight mass spectrometry for time-resolved measurements

2007 ◽  
Vol 78 (3) ◽  
pp. 034103 ◽  
Author(s):  
Mark A. Blitz ◽  
Andrew Goddard ◽  
Trevor Ingham ◽  
Michael J. Pilling
Keyword(s):  
Mass Spectrometry ◽  
Time Of Flight ◽  
Time Resolved ◽  
Flight Mass Spectrometry ◽  
Time Resolved Measurements

scholarly journals Comparison of Different Time of Flight-Mass Spectrometry Modes for Small Molecule Quantitative Analysis

2015 ◽  
Vol 39 (9) ◽  
pp. 675-685 ◽  
Author(s):  
Nandkishor S. Chindarkar ◽  
Hyung-Doo Park ◽  
Judith A. Stone ◽  
Robert L. Fitzgerald
Keyword(s):  
Mass Spectrometry ◽  
Quantitative Analysis ◽  
Small Molecule ◽  
Time Of Flight ◽  
Flight Mass Spectrometry
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