Results 31 to 40 of about 1,495,981 (221)

Authenticity control of pine sylvestris essential oil by chiral gas chromatographic analysis of α-pinene

Scientific Reports, 2021
Numerous terpenes present in essential oils (EOs) display one or more chiral centers. Within the same genus the enantiomeric ratio of these compounds can be different. Thus, the determination of enantiomers is a valuable tool to evaluate authenticity and
Martina D Allenspach, C. Valder, D. Flamm, Christian Steuer   +3 more
semanticscholar   +1 more source

Evaluation of Three Trap Types and Five Lures for Monitoring \u3ci\u3eHylurgus Ligniperda\u3c/i\u3e (Coleoptera: Scolytidae) and Other Local Scolytids in New York [PDF]

, 2018
Hylurgus ligniperda (Coleoptera: Scolytidae) is a pine (Pinus spp.) pest native to Eurasia and northern Africa. In December 2000, an established population of H. ligniperda was discovered in Monroe County, New York.
Haack, Robert A, Petrice, Toby R, Poland, Therese M   +2 more
core   +2 more sources

Organosulfate Formation in Biogenic Secondary Organic Aerosol [PDF]

, 2008
Organosulfates of isoprene, α-pinene, and β-pinene have recently been identified in both laboratory-generated and ambient secondary organic aerosol (SOA).
Chan, Arthur W. H., Claeys, Magda, Edney, Edward O., Flagan, Richard C., Gómez-González, Yadlan, Jaoui, Mohammed, Kleindienst, Tadeusz E., Lewandowski, Michael, Maenhaut, Willy, Offenberg, John H., Seinfeld, John H., Shahgholi, Mona, Surratt, Jason D., Vermeylen, Reinhilde   +13 more
core   +1 more source

Photochemical aerosol formation from α-pinene- and β-pinene [PDF]

, 1992
Aerosol formation from α-pinene and β-pinene was studied in a series of outdoor smog chamber experiments. Since a previous study focused on β-pinene (Pandis et al., 1991), more attention was given here to α-pinene.
Flagan, Richard C., Seinfeld, John H., Shaw, Martha, Zhang, Shou-Hua   +3 more
core   +1 more source

Molecular understanding of new-particle formation from α-pinene between −50 and +25 °C

, 2020
. Highly oxygenated organic molecules (HOMs) contribute substantially to the formation and growth of atmospheric aerosol particles, which affect air quality, human health and Earth's climate.
M. Simon, L. Dada, M. Heinritzi, W. Scholz, D. Stolzenburg, L. Fischer, A. Wagner, A. Kürten, B. Rörup, Xucheng He, J. Almeida, Rima Baalbaki, A. Baccarini, P. Bauer, L. Beck, A. Bergen, Federico Bianchi, Steffen Bräkling, S. Brilke, L. Caudillo, Dexian Chen, Biwu Chu, A. Dias, D. Draper, J. Duplissy, I. El-Haddad, Henning Finkenzeller, C. Frege, Loic Gonzalez-Carracedo, H. Gordon, Manuel Granzin, J. Hakala, V. Hofbauer, C. Hoyle, Changhyuk Kim, Weimeng Kong, Houssni Lamkaddam, C. P. Lee, K. Lehtipalo, M. Leiminger, H. Mai, H. Manninen, Guillaume Marie, R. Marten, B. Mentler, U. Molteni, L. Nichman, W. Nie, A. Ojdanic, A. Onnela, Eva Partoll, T. Petäjä, Joschka Pfeifer, M. Philippov, L. Quéléver, A. Ranjithkumar, M. Rissanen, S. Schallhart, S. Schobesberger, S. Schuchmann, Jiali Shen, M. Sipilä, G. Steiner, Y. Stozhkov, C. Tauber, Y. J. Tham, A. Tomé, Miguel Vazquez-Pufleau, A. Vogel, R. Wagner, Mingyi Wang, Dongyu S. Wang, Yonghong Wang, Stefan K. Weber, Yusheng Wu, M. Xiao, Chao Yan, P. Ye, Q. Ye, Marcel Zauner-Wieczorek, Xueqin Zhou, U. Baltensperger, J. Dommen, R. Flagan, A. Hansel, M. Kulmala, R. Volkamer, P. Winkler, D. Worsnop, N. Donahue, J. Kirkby, J. Curtius   +91 more
semanticscholar   +1 more source

Importance of secondary organic aerosol formation of α-pinene, limonene, and m-cresol comparing day- and nighttime radical chemistry

, 2021
. The oxidation of biogenic and anthropogenic compounds leads to the formation of secondary organic aerosol mass (SOA). The present study aims to investigate α -pinene, limonene, and m -cresol with regards to their SOA formation potential dependent on ...
A. Mutzel, Yanli Zhang, O. Böge, M. Rodigast, A. Kołodziejczyk, Xinming Wang, H. Herrmann   +6 more
semanticscholar   +1 more source

Essential Oil Compositions of Pinus Species (P. contorta Subsp. contorta, P. ponderosa var. ponderosa, and P. flexilis); Enantiomeric Distribution of Terpenoids in Pinus Species

Molecules, 2022
Pinus species are important in traditional medicine throughout their ranges, and pine essential oils are of interest in aromatherapy and as topical treatments. In this work, the leaf (needle) essential oils of Pinus ponderosa var.
Elizabeth Ankney, Kathy Swor, Prabodh Satyal, William N. Setzer   +3 more
doaj   +1 more source

Elemental analysis of chamber organic aerosol using an Aerodyne high-resolution aerosol mass spectrometer [PDF]

, 2010
The elemental composition of laboratory chamber secondary organic aerosol (SOA) from glyoxal uptake, α-pinene ozonolysis, isoprene photooxidation, single-ring aromatic photooxidation, and naphthalene photooxidation is evaluated using Aerodyne high ...
Chhabra, P. S., Flagan, R. C., Seinfeld, J. H.   +2 more
core   +1 more source

Relating hygroscopicity and composition of organic aerosol particulate matter [PDF]

, 2010
A hygroscopicity tandem differential mobility analyzer (HTDMA) was used to measure the water uptake (hygroscopicity) of secondary organic aerosol (SOA) formed during the chemical and photochemical oxidation of several organic precursors in a smog chamber.
Aiken, Allison C., Alfarra, M. Rami, Baltensperger, Urs, Barmpadimos, Iakovos, Canagaratna, Manjula R., Collins, Donald R., DeCarlo, Peter F., Dommen, Josef, Duplissy, Jonathan, Gysel, Martin, Jimenez, Jose Luis, Metzger, Axel, Prevot, André Stephan Henry, Tomlinson, Jason M., Tritscher, Torsten, Weingartner, Ernest, Worsnop, Douglas R.   +16 more
core   +5 more sources

Enhanced Volatile Organic Compounds emissions and organic aerosol mass increase the oligomer content of atmospheric aerosols [PDF]

, 2018
open25openKourtchev, Ivan; Giorio, Chiara; Manninen, Antti; Wilson, Eoin; Mahon, Brendan; Aalto, Juho; Kajos, Maija; Venables, Dean; Ruuskanen, Taina; Levula, Janne; Loponen, Matti; Connors, Sarah; Harris, Neil; Zhao, Defeng; Kiendler-Scharr, Astrid ...

core   +1 more source