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Titolo:
Identification of nonmethane organic compound emissions from grassland vegetation
Autore:
Fukui, Y; Doskey, PV;
Indirizzi:
Argonne Natl Lab, Div Environm Res, Argonne, IL 60439 USA Argonne Natl Lab Argonne IL USA 60439 Environm Res, Argonne, IL 60439 USA
Titolo Testata:
ATMOSPHERIC ENVIRONMENT
fascicolo: 18, volume: 34, anno: 2000,
pagine: 2947 - 2956
SICI:
1352-2310(2000)34:18<2947:IONOCE>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAS-PHASE REACTIONS; BIOGENIC HYDROCARBON EMISSIONS; POSSIBLE INSECT ATTRACTANTS; CALIFORNIA CENTRAL VALLEY; OH RADICAL FORMATION; RATE CONSTANTS; OXYGENATED HYDROCARBONS; NATURAL HYDROCARBONS; VOLATILE COMPONENTS; UNITED-STATES;
Keywords:
GC/MS; monoterpene; nonmethane organic compound; NMOC; oxygenated hydrocarbon; OxHC; grassland; biogenic emission;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
61
Recensione:
Indirizzi per estratti:
Indirizzo: Doskey, PV Argonne Natl Lab, Div Environm Res, 9700 S Cass Ave, Argonne, IL 60439 USA Argonne Natl Lab 9700 S Cass Ave Argonne IL USA 60439 60439 USA
Citazione:
Y. Fukui e P.V. Doskey, "Identification of nonmethane organic compound emissions from grassland vegetation", ATMOS ENVIR, 34(18), 2000, pp. 2947-2956

Abstract

Emissions of nonmethane organic compounds (NMOCs) from grassland vegetation were collected in Summa(R) passivated stainless-steel canisters with a static enclosure technique and were analyzed by high-resolution gas chromatography with dame ionization and ion trap mass spectrometric detectors. Approximately 40 NMOCs with 6-10 carbon atoms were observed in samples analyzed by high-resolution gas chromatography with the flame ionization detector. Nineteen NMOCs in this molecular weight range (6 aliphatic oxygenates; I aromatic hydrocarbon: and 4 acyclic, 5 monocyclic, and 3 bicyclic monoterpenoids) were identified by ion trap mass spectrometry. Mass spectrometry was particularly useful for identifying myrcene and cis-3-hexenylacetate, which coeluted on a fused-silica capillary column coated with a 1-mu m-thick film of polydimethylsiloxane. An evaluation of the reactivity of the grassland emissions revealed that the aliphatic oxygenates have lifetimes of a few hours with respect to oxidation by OH and O-3 in the atmosphere. This value issimilar to the lifetimes of the bicyclic monoterpenoids. The expected lifetimes of the monoterpenoids with respect to oxidation by NO3 are only several minutes. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 02:01:34