Results 241 to 250 of about 10,542,246 (288)
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Reactions of Ions with Ionic Liquid Vapors by Selected-Ion Flow Tube Mass Spectrometry
The Journal of Physical Chemistry Letters, 2011Room-temperature ionic liquids exert vanishingly small vapor pressures under ambient conditions. Under reduced pressure, certain ionic liquids have demonstrated volatility, and they are thought to vaporize as intact cation-anion ion pairs. However, ion pair vapors are difficult to detect because their concentration is extremely low under these ...
Steven D, Chambreau +5 more
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Quantification of Methanol in the Presence of Ethanol by Selected Ion Flow Tube Mass Spectrometry
European Journal of Mass Spectrometry, 2016The quantification of trace compounds in alcoholic beverages is a useful means to both investigate the chemical basis of beverage fLavor and to facilitate quality control during the production process. One compound of interest is methanol which, due to it being toxic, must not exceed regulatory limits.
Catherine, Chambers-Bédard +1 more
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Selected ion flow tube mass spectrometry of exhaled breath condensate headspace
Rapid Communications in Mass Spectrometry, 2008Abstract Collection of exhaled breath condensate (EBC) is a relatively simple noninvasive method of breath analysis; however, no data have been reported that would relate concentration of volatile compounds in EBC to their gaseous concentrations in exhaled air.
Petr, Cáp +3 more
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Quantification of hydrogen cyanide in humid air by selected ion flow tube mass spectrometry
Rapid Communications in Mass Spectrometry, 2004Abstract Following our recent observation that Pseudomonas bacteria in vitro emit hydrogen cyanide, we have found it necessary to investigate the ion chemistry of this compound and to extend the kinetics database for selected ion flow ...
Patrik, Spanĕl +2 more
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Application of selected ion flow tube mass spectrometry to real‐time atmospheric monitoring
Rapid Communications in Mass Spectrometry, 2010Abstract Data are presented for real‐time atmospheric monitoring of volatile organic chemicals (VOCs) in air using selected ion flow tube mass spectrometry (SIFT‐MS) technology. These measurements were made by one of the new generation of SIFT‐MS instruments.
Barry J, Prince +2 more
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Quantification of hydrogen sulphide in humid air by selected ion flow tube mass spectrometry
Rapid Communications in Mass Spectrometry, 2000We report the results of a study of the reactions of H(3)O(+), NO(+) and O(2)(+.) ions with H(2)S. This study was undertaken to provide a thorough understanding of the ion chemistry required for accurate quantification of H(2)S in humid air by selected ion flow tube mass spectrometry (SIFT-MS).
P, Spanel, D, Smith
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Determination of Olive Oil Oxidative Status by Selected Ion Flow Tube Mass Spectrometry
Journal of Agricultural and Food Chemistry, 2007The emergence of primary and secondary oxidation products in New Zealand extra virgin olive oil during accelerated thermal oxidation was measured and correlated with the concentrations of 13 headspace volatile compounds measured by selected ion flow tube mass spectrometry (SIFT-MS). SIFT-MS is a mass spectrometric technique that permits qualitative and
Brett M, Davis, Murray J, McEwan
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Selected Ion Flow Tube (SIFT) Applications in Mass Spectrometry
2017The first version of this article published in 1999 in Encyclopedia\nof Spectroscopy and Spectrometry, under the title “SIFT\napplications in mass spectrometry”, focused on the selected\nion flow tube, SIFT, technique that was primarily developed\nand used for the study of the kinetics of ion-molecule reactions\nat thermal energies.
Španěl, P. (Patrik), Smith, D.
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Evaluation of the performance of field olfactometers by selected ion flow tube mass spectrometry
Biosystems Engineering, 2015Odour quantification is generally performed by olfactometry, a technique which determines to what extent an odorous air sample should be diluted with odour-free air to be just distinguishable from odour-free air. In this study, the performance of two field olfactometers (Nasal Ranger and Scentroid 110c) was evaluated with respect to their ability to ...
Christophe Walgraeve +3 more
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Real‐time measurement of peroxyacetyl nitrate using selected ion flow tube mass spectrometry
Rapid Communications in Mass Spectrometry, 2010Abstract The on‐line detection of gaseous peroxyacetyl nitrate (PAN) using selected ion flow tube mass spectrometry (SIFT‐MS) has been investigated using a synthetic sample of PAN in air at a humidity of ∼30%. Using the H 3 O + reagent
Donald R, Hastie +5 more
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