On-line monitoring of the dynamics of trihalomethane concentrations in a warm public swimming pool using an unsupervised membrane inlet mass spectrometry system with off-site real-time surveillance

2009 ◽  
Vol 24 (1) ◽  
pp. 30-34 ◽  
Author(s):  
Gert H. Kristensen ◽  
Morten M. Klausen ◽  
Vagn A. Hansen ◽  
Frants R. Lauritsen
Keyword(s):  
Mass Spectrometry ◽  
Real Time ◽  
Swimming Pool ◽  
Membrane Inlet Mass Spectrometry ◽  
On Line ◽  
Mass Spectrometry System

scholarly journals Real-time Monitoring of Propofol in Expired Air in Humans Undergoing Total Intravenous Anesthesia

2007 ◽  
Vol 106 (4) ◽  
pp. 665-674 ◽  
Author(s):  
Cyrill Hornuss ◽  
Siegfried Praun ◽  
Johannes Villinger ◽  
Albert Dornauer ◽  
Patrick Moehnle ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Real Time ◽  
Whole Blood ◽  
Total Intravenous Anesthesia ◽  
Real Time Monitoring ◽  
Intravenous Anesthesia ◽  
Blood Concentrations ◽  
Arterial Blood ◽  
On Line ◽  
Mass Spectrometry System

Background The physicochemical properties of propofol could allow diffusion across the alveolocapillary membrane and a measurable degree of pulmonary propofol elimination. The authors tested this hypothesis and showed that propofol can be quantified in expiratory air and that propofol breath concentrations reflect blood concentrations. This could allow real-time monitoring of relative changes in the propofol concentration in arterial blood during total intravenous anesthesia. Methods The authors measured gas-phase propofol using a mass spectrometry system based on ion-molecule reactions coupled with quadrupole mass spectrometry which provides a highly sensitive method for on-line and off-line measurements of organic and inorganic compounds in gases. In a first sequence of experiments, the authors sampled blood from neurosurgery patients undergoing total intravenous anesthesia and performed propofol headspace determination above the blood sample using an auto-sampler connected to the mass spectrometry system. In a second set of experiments, the mass spectrometry system was connected directly to neurosurgery patients undergoing target-controlled infusion via a T piece inserted between the endotracheal tube and the Y connector of the anesthesia machine, and end-expiratory propofol concentrations were measured on-line. Results A close correlation between propofol whole blood concentration and propofol headspace was found (range of Pearson r, 0.846-0.957; P < 0.01; n = 6). End-expiratory propofol signals mirrored whole blood values with close intraindividual correlations between both parameters (range of Pearson r, 0.784-0.985; n = 11). Conclusion Ion-molecule reaction mass spectrometry may allow the continuous and noninvasive monitoring of expiratory propofol levels in patients undergoing general anesthesia.

Reversed-Phase Membrane Inlet Mass Spectrometry Applied to the Real-Time Monitoring of Low Molecular Weight Alcohols in Chloroform

2002 ◽  
Vol 74 (1) ◽  
pp. 300-304 ◽  
Author(s):  
Colin S. Creaser ◽  
David Gómez Lamarca ◽  
Jeffrey Brum ◽  
Christopher Werner ◽  
Anthony P. New ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Molecular Weight ◽  
Real Time ◽  
Reversed Phase ◽  
Low Molecular Weight ◽  
Real Time Monitoring ◽  
The Real ◽  
Membrane Inlet Mass Spectrometry

scholarly journals The Kinetics of n -Butyl Acrylate Radical Polymerization Revealed in a Single Experiment by Real Time On-line Mass Spectrometry Monitoring

2017 ◽  
Vol 11 (4) ◽  
pp. 1700016 ◽  
Author(s):  
Joris J. Haven ◽  
Neomy Zaquen ◽  
Maarten Rubens ◽  
Tanja Junkers
Keyword(s):  
Mass Spectrometry ◽  
Real Time ◽  
Radical Polymerization ◽  
Butyl Acrylate ◽  
Single Experiment ◽  
Line Mass ◽  
On Line ◽  
Kinetics Of

Fast analysis of benzodiazepines using argon direct analysis in real time mass spectrometry on-line coupled with a thermal-assisted gasification injector

2017 ◽  
Vol 31 (12) ◽  
pp. 1073-1076
Author(s):  
Feng Zhou ◽  
Shu Liu ◽  
Junpeng Xing ◽  
Zhiqiang Liu ◽  
Fengrui Song
Keyword(s):  
Mass Spectrometry ◽  
Real Time ◽  
Direct Analysis ◽  
Fast Analysis ◽  
On Line

Real-time, on-line monitoring of organic chemical reactions using extractive electrospray ionization tandem mass spectrometry

2008 ◽  
Vol 22 (19) ◽  
pp. 2993-2998 ◽  
Author(s):  
Liang Zhu ◽  
Gerardo Gamez ◽  
Huan Wen Chen ◽  
Hao Xi Huang ◽  
Konstantin Chingin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Electrospray Ionization ◽  
Real Time ◽  
Chemical Reactions ◽  
Organic Chemical ◽  
Tandem Mass ◽  
On Line ◽  
Ionization Tandem Mass Spectrometry

Development of an On-Line Pyrolysis Mass Spectrometry System for the On-Line Analysis of Fermentations

1987 ◽  
pp. 209-215 ◽  
Author(s):  
E. P. Sandmeier ◽  
J. Keller ◽  
E. Heinzle ◽  
I. J. Dunn ◽  
J. R. Bourne
Keyword(s):  
Mass Spectrometry ◽  
Pyrolysis Mass Spectrometry ◽  
On Line ◽  
Mass Spectrometry System ◽  
Line Analysis
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