气候变化领域集成服务门户(CCPortal): Volatile organic compound fluxes over a winter wheat field by PTR-Qi-TOF-MS and eddy covariance

CCPortal

DOI	10.5194/acp-22-2817-2022
	Volatile organic compound fluxes over a winter wheat field by PTR-Qi-TOF-MS and eddy covariance
	Loubet, Benjamin; Buysse, Pauline; Gonzaga-Gomez, Lais; Lafouge, Florence; Ciuraru, Raluca; Decuq, Celine; Kammer, Julien; Bsaibes, Sandy; Boissard, Christophe; Durand, Brigitte; Gueudet, Jean-Christophe; Fanucci, Olivier; Zurfluh, Olivier; Abis, Letizia; Zannoni, Nora; Truong, Francois; Baisnee, Dominique; Sarda-Esteve, Roland; Staudt, Michael; Gros, Valerie
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	2817
结束页码	2842
卷号	22 期号:4 页码:26
英文摘要	Volatile organic compounds (VOCs) contribute to air pollution through the formation of secondary aerosols and ozone and extend the lifetime of methane in the atmosphere. Tropospheric VOCs originate to 90 % from biogenic sources on a global scale, mainly from forests. Crops are also a potentially large yet poorly characterized source of VOCs (30 % of the VOC emissions in Europe, mostly oxygenated). In this study, we investigated VOC fluxes over a winter wheat field by eddy covariance using a PTR-Qi-TOF-MS with high sensitivity and mass resolution. The study took place near Paris over a 5-week period and included flowering, crop maturity and senescence. We found a total of 123 VOCs with fluxes 3 times above the detection limit. Methanol was the most emitted compound with an average flux of 63 mu g m(-2) h(-1), representing about 52 % of summed VOC emissions on a molar basis (36 % on a mass basis). We also identified ethanol, acetone, acetaldehyde and dimethyl sulfide among the six most emitted compounds. The third most emitted VOC corresponded to the ion m/z 93.033. It was tentatively identified as furan (C6H4O), a compound not previously reported to be strongly emitted by crops. The average summed VOC emissions were about 173 +/- 6 mu g m(-2) h(-1), while the average VOC depositions were about 109 +/- 2 mu g m(-2) h(-1) and hence 63 % of the VOC emissions on a mass basis. The net ecosystem flux of VOCs was an emission of 64 +/- 6 mu g m(-2) h(-1) (0.5 +/- 0.05 nmol m(-2) s(-1)). The most deposited VOCs were identified as hydroxyacetone, acetic acid and fragments of oxidized VOCs. Overall, our results reveal that wheat fields represent a non-negligible source and sink of VOCs to be considered in regional VOC budgets and underline the usefulness and limitations of eddy covariance measurements with a PTR-Qi-TOF-MS.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000765810900001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273530
作者单位	AgroParisTech; INRAE; UDICE-French Research Universities; Universite Paris Saclay; UDICE-French Research Universities; Universite Paris Cite; Universite Paris Saclay; CEA; Centre National de la Recherche Scientifique (CNRS); UDICE-French Research Universities; Universite Paris Cite; Centre National de la Recherche Scientifique (CNRS); UDICE-French Research Universities; Universite Paris Cite; Universite Paris-Est-Creteil-Val-de-Marne (UPEC); UDICE-French Research Universities; Universite PSL; Ecole Pratique des Hautes Etudes (EPHE); Institut Agro; Montpellier SupAgro; CIRAD; Centre National de la Recherche Scientifique (CNRS); Institut de Recherche pour le Developpement (IRD); Universite Paul-Valery; Universite de Montpellier; Centre National de la Recherche Scientifique (CNRS); UDICE-French Research Universities; Aix-Marseille Universite; Technical University of Berlin; Max Planck Society
推荐引用方式 GB/T 7714	Loubet, Benjamin,Buysse, Pauline,Gonzaga-Gomez, Lais,et al. Volatile organic compound fluxes over a winter wheat field by PTR-Qi-TOF-MS and eddy covariance[J],2022,22(4):26.
APA	Loubet, Benjamin.,Buysse, Pauline.,Gonzaga-Gomez, Lais.,Lafouge, Florence.,Ciuraru, Raluca.,...&Gros, Valerie.(2022).Volatile organic compound fluxes over a winter wheat field by PTR-Qi-TOF-MS and eddy covariance.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(4),26.
MLA	Loubet, Benjamin,et al."Volatile organic compound fluxes over a winter wheat field by PTR-Qi-TOF-MS and eddy covariance".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.4(2022):26.