Quantitative Gas Analysis by Mass Spectrometer. III

Evaluation of small mass spectrometer systems for permanent gas analysis.

This work is aimed at understanding the aspects of designing a miniature mass spectrometer (MS) system. Several types of small MS systems are evaluated and discussed, including linear quadrupole, quadrupole ion trap, time of flight, and sector. Analysis of hydrogen, helium, oxygen, and argon in a nitrogen background with the concentrations of the components of interest ranging from 0 to 5000 pa...

Analysis of the Fatty acid Composition of Phlomis bracteosa oil by Gas Chromatography - mass spectrometer

The Phlomis bracteosa oil constituents of methyl ester derivatives of fatty acids were analyzed using Gas Chromatography coupled to mass spectrometer. The results obtained containing the saturated as well as unsaturated fatty acids of P. bracteosa oils. A total of 18 different components were identified and quantified. Methyl ester of octadecadienoic acid was found in high concentration 6.88 %,...

Flexible data handling for routine quantitative analyses employing a gas chromatograph-mass spectrometer under computer control

Perchloroethylene Analysis by Chemical Oxidation and Determination of Intermediate Products by Gas Chromatography, Mass Spectrometry

Abstract Background and Objective: Perchloroethylene (PCE) is a chlorinated hydrocarbon used as a solvent in many industrial processes. In contaminated water and soil a great deal of PCE is found. This study aimed to determine the rate of decomposition of PCE occurred after advanced oxidation. Material and Methods: In this descriptive-analytic study conducted (2011) in public health faculty...

Gas flow through the mass spectrometer viscous leak.