Results 51 to 60 of about 1,495,981 (221)

Unimolecular Reactions of Peroxy Radicals Formed in the Oxidation of α-Pinene and β-Pinene by Hydroxyl Radicals.

Journal of Physical Chemistry A, 2019
Atmospheric oxidation of monoterpenes (emitted primarily by evergreen trees) is known to contribute to the formation and growth of aerosol particles. While recent research has tied the formation of organic aerosol to unimolecular chemistry of the organic
Lu Xu, Kristian H. Møller, J. Crounse, Rasmus V. Otkjær, H. Kjaergaard, P. Wennberg   +5 more
semanticscholar   +1 more source

The Flower Essential Oil of Dalea mutisii Kunth (Fabaceae) from Ecuador: Chemical, Enantioselective, and Olfactometric Analyses

Plants, 2020
An essential oil was distilled with 0.25% yield from fresh flowers of Dalea mutisii Kunth, a native species mainly growing in the Andean region of Ecuador. A total of 50 compounds were identified, and most of them were quantified.
Gianluca Gilardoni, Mayra Montalván, Mariana Ortiz, Diego Vinueza, José Vinicio Montesinos   +4 more
doaj   +1 more source

Dimers in α-pinene secondary organic aerosol: effect of hydroxyl radical, ozone, relative humidity and aerosol acidity [PDF]

Atmospheric Chemistry and Physics, 2014
The formation of secondary organic aerosol (SOA) from both ozonolysis and hydroxyl radical (OH)-initiated oxidation of α-pinene under conditions of high nitric oxide (NO) concentrations with varying relative humidity (RH) and aerosol acidity was ...
K. Kristensen, T. Cui, H. Zhang, A. Gold, M. Glasius, J. D. Surratt   +5 more
doaj   +1 more source

Origins and composition of fine atmospheric carbonaceous aerosol in the Sierra Nevada Mountains, California [PDF]

, 2011
In this paper we report chemically resolved measurements of organic aerosol (OA) and related tracers during the Biosphere Effects on Aerosols and Photochemistry Experiment (BEARPEX) at the Blodgett Forest Research Station, California from 15 August–10 ...
Bench, G., de Gouw, J., Docherty, K. S., Farmer, D. K., Gilman, J. B., Glasius, M., Goldstein, A. H., Hering, S. V., Jimenez, J. L., Kreisberg, N. M., Kristensen, K., Kuster, W. C., McKay, M., Seinfeld, J. H., Surratt, J. D., Williams, B. J., Worton, D. R.   +16 more
core   +2 more sources

Synthesis of Carboxylic Acid and Dimer Ester Surrogates to Constrain the Abundance and Distribution of Molecular Products in α-Pinene and β-Pinene Secondary Organic Aerosol.

Environmental Science and Technology, 2020
Liquid chromatography/negative electrospray ionization mass spectrometry [LC/(-)ESI-MS] is routinely employed to characterize the identity and abundance of molecular products in secondary organic aerosol (SOA) derived from monoterpene oxidation. Due to a
Christopher M. Kenseth, Nicholas J. Hafeman, Yuanlong Huang, N. Dalleska, B. Stoltz, J. Seinfeld   +5 more
semanticscholar   +1 more source

Commercial turpentine oil enriched with α-terpineol using an acid heterogeneous catalyst

Revista Facultad de Ingeniería Universidad de Antioquia
The hydration of α-pinene, limonene, β-pinene, and commercial turpentine oil in the presence of strong acidic cation exchange resin Amberlyst-15 was studied.
Iván de Jesús Aguas-Caballero, Aída Luz Villa-Holguín, Edwin Alexis Alarcón-Durango   +2 more
doaj   +1 more source

Comparative Anti-Infectious Bronchitis Virus (IBV) Activity of (-)-Pinene: Effect on Nucleocapsid (N) Protein

Molecules, 2011
In the present study, anti-IBV (infectious bronchitis virus) activities of (-)-pinenes were studied by MTT assay, as well as docking and molecular dynamic (MD) simulations. The CC50 values of (-)-α-pinene and (-)-β-pinene were above 10 mM.
Zhiwei Yang, Nan Wu, Yujie Fu, Yuangang Zu   +3 more
doaj   +1 more source

Impact of NOx on secondary organic aerosol (SOA) formation from α-pinene and β-pinene photooxidation: the role of highly oxygenated organic nitrates

, 2020
. The formation of organic nitrates (ON) in the gas phase and their impact on mass formation of Secondary Organic Aerosol (SOA) was investigated in a laboratory study for α-pinene and β-pinene photo-oxidation.
I. Pullinen, S. Schmitt, Sungah Kang, M. Sarrafzadeh, P. Schlag, S. Andres, E. Kleist, T. Mentel, F. Rohrer, M. Springer, R. Tillmann, J. Wildt, Cheng Wu, Defeng Zhao, A. Wahner, A. Kiendler‐Scharr   +15 more
semanticscholar   +1 more source

Survey of foliar monoterpenes across the range of jack pine reveal three widespread chemotypes: implications to host expansion of invasive mountain pine beetle

Frontiers in Plant Science, 2015
The secondary compounds of pines (Pinus) can strongly affect the physiology, ecology and behaviors of the bark beetles (Coleoptera: Curculionidae, Scolytinae) that feed on sub-cortical tissues of hosts.
Spencer eTaft, Ahmed eNajar, Juie eGodbout, Jean eBousquet, Nadir eErbilgin   +4 more
doaj   +1 more source

α-pinene photooxidation under controlled chemical conditions – Part 2: SOA yield and composition in low- and high-NO_x environments [PDF]

, 2012
The gas-phase oxidation of α-pinene produces a large amount of secondary organic aerosol (SOA) in the atmosphere. A number of carboxylic acids, organosulfates and nitrooxy organosulfates associated with α-pinene have been found in field samples and some ...
Chan, M., Chhabra, P. S., Eddingsaas, N. C., Loza, C. L., Schilling, K. A., Seinfeld, J. H., Wennberg, P. O., Yee, L. D.   +7 more
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