Isotope Labeling Studies on the Formation of Multiple Addition Products of Alanine in the Pyrolysis Residue of Glucose/Alanine Mixtures by High-Resolution ESI-TOF-MS

2011 ◽  
Vol 59 (21) ◽  
pp. 11629-11634 ◽  
Author(s):  
Fong Lam Chu ◽  
Lekha Sleno ◽  
Varoujan A. Yaylayan
Keyword(s):  
High Resolution ◽  
Isotope Labeling ◽  
Pyrolysis Residue ◽  
Multiple Addition ◽  
Tof Ms

Analysis of the volatile constituents of cooked petai beans (Parkia speciosa) using high-resolution GC/ToF-MS

2008 ◽  
Vol 23 (6) ◽  
pp. 434-440 ◽  
Author(s):  
Eric Frérot ◽  
Alain Velluz ◽  
Alain Bagnoud ◽  
Estelle Delort
Keyword(s):  
High Resolution ◽  
Volatile Constituents ◽  
Tof Ms

scholarly journals Characterization of biomass burning smoke from cooking fires, peat, crop residue and other fuels with high resolution proton-transfer-reaction time-of-flight mass spectrometry

2014 ◽  
Vol 14 (15) ◽  
pp. 22163-22216 ◽  
Author(s):  
C. E. Stockwell ◽  
P. R. Veres ◽  
J. Williams ◽  
R. J. Yokelson
Keyword(s):  
Reaction Time ◽  
High Resolution ◽  
Proton Transfer ◽  
Organic Compounds ◽  
Biomass Burning ◽  
Crop Residue ◽  
Transfer Reaction ◽  
Time Of Flight ◽  
Proton Transfer Reaction ◽  
Tof Ms

Abstract. We deployed a high-resolution proton-transfer-reaction time-of-flight mass spectrometer (PTR-TOF-MS) to measure biomass burning emissions from peat, crop-residue, cooking fires, and many other fire types during the fourth Fire Lab at Missoula Experiment (FLAME-4) laboratory campaign. A combination of gas standards calibrations and composition sensitive, mass dependent calibration curves were applied to quantify gas-phase non-methane organic compounds (NMOCs) observed in the complex mixture of fire emissions. We used several approaches to assign best identities to most major "exact masses" including many high molecular mass species. Using these methods approximately 80–96% of the total NMOC mass detected by PTR-TOF-MS and FTIR was positively or tentatively identified for major fuel types. We report data for many rarely measured or previously unmeasured emissions in several compound classes including aromatic hydrocarbons, phenolic compounds, and furans; many of which are suspected secondary organic aerosol precursors. A large set of new emission factors (EFs) for a range of globally significant biomass fuels is presented. Measurements show that oxygenated NMOCs accounted for the largest fraction of emissions of all compound classes. In a brief study of various traditional and advanced cooking methods, the EFs for these emissions groups were greatest for open 3-stone cooking in comparison to their more advanced counterparts. Several little-studied nitrogen-containing organic compounds were detected from many fuel types that together accounted for 0.1–8.7% of the fuel nitrogen and some may play a role in new particle formation.

Scope and limitations of principal component analysis of high resolution LC-TOF-MS data: the analysis of the chlorogenic acid fraction in green coffee beans as a case study

2011 ◽  
Vol 3 (1) ◽  
pp. 144-155 ◽  
Author(s):  
Nikolai Kuhnert ◽  
Rakesh Jaiswal ◽  
Pinkie Eravuchira ◽  
Rasha M. El-Abassy ◽  
Bernd von der Kammer ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
High Resolution ◽  
Chlorogenic Acid ◽  
Principal Component ◽  
Green Coffee ◽  
Acid Fraction ◽  
Green Coffee Beans ◽  
Coffee Beans ◽  
Tof Ms

Sequential Observation of Alkali‐halide Gas Phase Clusters in High Resolution TOF‐MS and Prediction of Their Structures

2013 ◽  
Vol 26 (6) ◽  
pp. 729-738 ◽  
Author(s):  
Hui Wen ◽  
Yi‐rong Liu ◽  
Kang‐ming Xu ◽  
Teng Huang ◽  
Chang‐jin Hu ◽  
...  
Keyword(s):  
High Resolution ◽  
Gas Phase ◽  
Alkali Halide ◽  
Gas Phase Clusters ◽  
Tof Ms

A new method for high-resolution and high-precision analysis of flunitrazepam and 7-aminoflunitrazepam in human body fluids using a Monolithic SPE SpinTip and UPLC–Q-ToF–MS

2019 ◽  
Vol 37 (2) ◽  
pp. 387-397
Author(s):  
Masaya Fujishiro ◽  
Ai Noguchi ◽  
Xiao-Pen Lee ◽  
Chika Hasegawa ◽  
Takeshi Kumazawa ◽  
...  
Keyword(s):  
High Resolution ◽  
High Precision ◽  
Human Body ◽  
Body Fluids ◽  
New Method ◽  
Precision Analysis ◽  
Tof Ms
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