Results 141 to 150 of about 1,345,257 (199)

Laboratory Analysis of VOC Emissions from Structural Materials in Wildland-Urban Interface Fires. [PDF]

Environ Sci Technol
Dresser W, Ridgway K, Helfrich A, L'Orange C, Jathar S, de Gouw J.   +5 more
europepmc   +1 more source

Triazine-ring protonation enables synergistic enhancement of proton conduction and membrane stability. [PDF]

Chem Sci
Dong Y, Xie H, Han Y, Li Q, Han J, He W.
europepmc   +1 more source

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Qualitative and quantitative rapid detection of VOCs differentially released by VAP-associated bacteria using PTR-MS and FGC-PTR-MS

The Analyst
Ventilator-associated pneumonia (VAP) is a prevalent disease caused by bacterial infection, and the traditional methods of identifying bacterial strains are time-consuming. In this study, the rapid identification of bacterial strains is expected to be achieved by detecting VOCs released by bacteria.
Wei Xu, Xue Zou, Yueting Ding, Qi Zhang, Yulan Song, Jin Zhang, Min Yang, Zhou Liu, Qiang Zhou, Dianlong Ge, Qiangling Zhang, Wencheng Song, Chaoqun Huang, Chengyin Shen, Yannan Chu   +14 more
openaire   +3 more sources

Applicability of PTR-MS in the quality control of saffron

Food Chemistry, 2016
The applicability of the emerging non-destructive technique, proton transfer reaction mass spectrometry (PTR-MS), was explored for the first time in the quality control of saffron. Monitoring of volatile organic compounds (VOCs) was achieved using a minute sample (35 mg). Fresh saffron was stored under selected conditions (25 and 40 °C, aw=0.64) over a
Nenadis, Nikolaos, Heenan, Samuel, Tsimidou, Maria Z., Van Ruth, Saskia   +3 more
openaire   +4 more sources

PTR-MS fragmentation patterns of gasoline hydrocarbons

International Journal of Mass Spectrometry, 2015
Abstract Product ion yields for a suite of hydrocarbons associated with motor vehicle exhaust including alkenes, alkanes, cycloalkanes, and aromatic compounds are reported for a PTR-MS instrument operated at an E/N ratio of 80 and 120 Td. At 120 Td many of the compounds tested underwent dissociative proton transfer reactions complicating the ...
Mylene Gueneron, Mathew H. Erickson, Graham S. VanderSchelden, Bertram T. Jobson   +3 more
openaire   +2 more sources

Rapid identification of artificial fragrant rice based on volatile organic compounds: From PTR-MS to FTIR.

Food Chemistry, 2023
The volatile organic compounds (VOCs) released from foods can reflect their internal properties. Artificial fragrant rice (AFR) is a fraudulent food product in which the flavor of low-quality rice is artificially enhanced by addition of essence.
Yachao Liu, Min Zuo, Ke Wang, L. Jiao, Guiyan Yang, Chongshan Yang, Xiande Zhao, D. Dong   +7 more
semanticscholar   +1 more source

Understanding the early-stage release of volatile organic compounds from rapeseed oil during deep-frying of tubers by targeted and omics-inspired approaches using PTR-MS and gas chromatography.

Food Research International, 2022
During deep-frying, a plethora of volatile products is emitted with the fumes. These compounds could act as oil quality indicators and change the indoor air composition leading to health risks for occupants. The presented experiments focus on deep-frying
T. Majchrzak, M. Marć, A. Wasik
semanticscholar   +1 more source

Characterization of wine with PTR-MS

International Journal of Mass Spectrometry, 2004
Abstract A new method for measuring volatile profiles of alcoholic beverages (or other ethanol-containing analytes such as perfumes or herbs) has been developed. The method is based on proton transfer reaction mass spectrometry (PTR-MS). However, instead of hydronium ions (H3O+) protonated ethanol clusters (C2H5OH2+(C2H5OH)n = 1,2) are used as ...
Elena Boscaini, Tomas Mikoviny, Armin Wisthaler, Eugen von Hartungen, Tilmann D. Märk   +4 more
openaire   +1 more source

CHARACTERIZATION OF STRAWBERRY GENOTYPES BY PTR-MS SPECTRAL FINGERPRINTING

Acta Horticulturae, 2004
Two supervised chemometric algorithms (discriminant analysis and artificial neutral networks) were used to elaborate the protein transfer reaction-mass spectrometry (PTR-MS) data of 63 strawberry samples from 2 cultivars harvested in 2002 from Italy. This technique allowed the discrimination of the cultivars using only 2 variables.
Mott, D., Biasioli, F., Gasperi, F., Aprea, E., Marini, F., Märk, T. D.   +5 more
openaire   +5 more sources