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Titolo:
Emission of reactive terpene compounds from orange orchards and their removal by within-canopy processes
Autore:
Ciccioli, P; Brancaleoni, E; Frattoni, M; Di Palo, V; Valentini, R; Tirone, G; Seufert, G; Bertin, N; Hansen, U; Csiky, O; Lenz, R; Sharma, M;
Indirizzi:
CNR, Ist Inquinamento Atmosfer, Area Ric Roma, I-00016 Monterotondo, ItalyCNR Monterotondo Italy I-00016 rea Ric Roma, I-00016 Monterotondo, Italy Univ,Tuscia, Dipartimento Sci Ambiente Forestale & Risorse, I-01100 Viterbo Univ Tuscia Viterbo Italy I-01100 e Forestale & Risorse, I-01100 Viterbo CommissVarese,an Communities, Joint Res Ctr, Inst Environm, I-21020 Ispra,Commiss European Communities Ispra Varese Italy I-21020 m, I-21020 Ispra, Fachhsch Nurtingen, D-72622 Nurtingen, Germany Fachhsch Nurtingen Nurtingen Germany D-72622 D-72622 Nurtingen, Germany GSFyForschungszentrum Umwelt & Gesundheit, D-85758 Oberschleissheim, German GSF Forschungszentrum Umwelt & Gesundheit Oberschleissheim Germany D-85758
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
fascicolo: D7, volume: 104, anno: 1999,
pagine: 8077 - 8094
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAS-PHASE REACTIONS; QUERCUS-ILEX L; PINUS-PINEA L.; NO3 RADICALS; MONOTERPENE EMISSION; BIOGENIC EMISSIONS; RATE CONSTANTS; OXYGENATED HYDROCARBONS; MASS-SPECTROMETRY; RESEARCH PROJECTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
50
Recensione:
Indirizzi per estratti:
Indirizzo: Ciccioli, P CNR, Ist Inquinamento Atmosfer, Area Ric Roma, Via Salaria Km 29-300,CP 10, CNR Via Salaria Km 29-300,CP 10 Monterotondo Italy I-00016 0,
Citazione:
P. Ciccioli et al., "Emission of reactive terpene compounds from orange orchards and their removal by within-canopy processes", J GEO RES-A, 104(D7), 1999, pp. 8077-8094

Abstract

VOC emission from orange orchards was determined in the framework of two field campaigns aimed at assessing the contribution of vegetation emissions to tropospheric ozone formation in the Valencia Citrus belt. Branch emission from different varieties of Citrus sinensis and Citrus Clementi was dominated by beta-caryophyllene during the summer period and by linalool during the blossoming season (April-May). Large emission of D-limonene from soil was also measured. Data collected with the enclosure technique were upscaledto determine canopy emission rates of terpene compounds. Values obtained were compared with fluxes measured by relaxed eddy accumulation. Substantialremoval of beta-caryophyllene and linalool was detected during transport from the canopy into the atmospheric boundary layer. While within-canopy removal of the sesquiterpene component was fully consistent with laboratory studies indicating the high reactivity of this compound with ozone, linalool losses were more difficult to explain. Although high canopy fluxes of acetone and acetaldehyde suggested linalool decomposition by gas-phase reactivity, removal by heterogeneous chemistry seems the: more likely explanation for the observed losses.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 13:30:16