Results 171 to 180 of about 1,345,257 (199)

Revealing dynamic changes of the volatile profile of food samples using PTR-MS.

Food Chemistry, 2021
T. Majchrzak, Wojciech Wojnowski, A. Wasik   +2 more
semanticscholar   +1 more source

Interference in the PTR-MS measurement of acetonitrile at m/z 42 in polluted urban air—A study using switchable reagent ion PTR-MS

International Journal of Mass Spectrometry, 2012
Abstract In Proton Transfer Reaction Mass Spectrometer (PTR-MS) measurements of the atmosphere, the signal at m / z 42 is commonly regarded as a unique measure of acetonitrile. However, two other ions potentially contribute to the signal at m / z 42. These are 13 C isotopologues of C 3 H 5 + and the product ion C 3 H 6 + produced by reaction
Erin Dunne, Ian E. Galbally, Sarah Lawson, Antonio Patti   +3 more
openaire   +1 more source

On-line monitoring of volatile organic compounds at pptv levels by means of proton-transfer-reaction mass spectrometry (PTR-MS) medical applications, food control and environmental research

, 1998
W. Lindinger, A. Hansel, A. Jordan
semanticscholar   +1 more source

PTR-MS analysis of fungal VOCs for early detection of oak wilt

Analytical and Bioanalytical Chemistry
Traditional methods for diagnosing bacterial or fungal infections, such as cell culture, are comprehensive but time-consuming and subjective. Microbial volatile organic compound (VOC) analysis offers a faster alternative, though challenges such as low concentrations and chemical heterogeneity persist. Gas chromatography-mass spectrometry (GC-MS), while
Anil Kumar Meher, Abdennour Abbas
openaire   +2 more sources

PTR-MS characterisation of an olfactometer

2009
Beauchamp, J., Frasnelli, J., Buettner, A., Scheibe, M., Hansel, A., Hummel, T.   +5 more
openaire   +1 more source

Advanced bioprocess monitoring via online PTR‐MS

Biotechnology and Bioengineering, 2012
openaire   +1 more source

Comparing PTR-MS profile of milk inoculated with pure or mixed cultures of spoilage bacteria.

Food microbiology, 2017
Mohammad Alothman, Karen Lusk, P. Silcock, P. Bremer   +3 more
semanticscholar   +1 more source

Tomato aroma volatiles measured by PTR-MS following artificial chewing

2013
The aim of this study was to develop an analytical system to study the tomato aroma profile as closed as possible to the real human perception. An artificial chewing device coupled to a PTR-MS was developed to study the release kinetics of volatiles during eating and the possibility to consider volatile concentration similar to in vivo condition ...
FARNETI, BRIAN, Simona Cristescu, COSTA, GUGLIELMO, Ernst Woltering   +3 more
openaire   +1 more source

Proton-transfer reaction mass spectrometry (PTR-MS) for the authentication of regionally unique South African lamb.

Food Chemistry, 2017
S. Erasmus, M. Muller, M. Alewijn, A. Koot, S. V. van Ruth, L. Hoffman   +5 more
semanticscholar   +1 more source

Measurement of H2S by PTR-MS: experiences and implications [PDF]

, 2013
Feilberg, Anders, Liu, Dezhao, Hansen, Michael Jørgen   +2 more
openaire   +1 more source