Parameters determining the performance of passive flux samplers proposed as a tool to estimate N 2 O emissions: evaluation at farm level and perspectives.

Autor: Larios AD; Institut National de la Recherche Scientifique (INRS), Centre Eau, Terre & Environnement, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada.; Institut de Recherche et de Développement en Agroenvironnement (IRDA), 2700 rue Einstein, Québec, QC, GIP 3W8, Canada.; Instituto Tecnológico Superior de Perote, Km 2.5, Carretera Perote-México, 91270, Perote, México., Godbout S; Institut de Recherche et de Développement en Agroenvironnement (IRDA), 2700 rue Einstein, Québec, QC, GIP 3W8, Canada., Brar SK; Institut National de la Recherche Scientifique (INRS), Centre Eau, Terre & Environnement, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada. satinder.brar@ete.inrs.ca., Palacios JH; Institut de Recherche et de Développement en Agroenvironnement (IRDA), 2700 rue Einstein, Québec, QC, GIP 3W8, Canada., Zegan D; Institut de Recherche et de Développement en Agroenvironnement (IRDA), 2700 rue Einstein, Québec, QC, GIP 3W8, Canada., Sandoval-Salas F; Institut National de la Recherche Scientifique (INRS), Centre Eau, Terre & Environnement, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada.; Instituto Tecnológico Superior de Perote, Km 2.5, Carretera Perote-México, 91270, Perote, México., Predicala B; Prairie Swine Centre, 2105 - 8th Street East, Saskatoon, SK, S7H 5N9, Canada., Avalos-Ramírez A; Institut National de la Recherche Scientifique (INRS), Centre Eau, Terre & Environnement, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada.; Centre National en Électrochimie et en Technologies Environnementales (CNETE), 2263, av. du Collège, Shawinigan, QC, G9N 6V8, Canada.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2019 Jul; Vol. 26 (19), pp. 19655-19664. Date of Electronic Publication: 2019 May 11.
DOI: 10.1007/s11356-019-04841-8
Abstrakt: The passive flux sampling is an economic and easy way to estimate gas emissions from agriculture sources. In the last decade, specific passive flux samplers (PFSs) have been developed to estimate nitrous oxide (N 2 O) emissions from agriculture sources. Packed with silica gel and zeolite 5A, the PFSs were placed facing the emission source direction close to the ventilation shafts. For validation, air samples were taken at different sampling time during 3 days on two commercial sites. The adsorbed mass of N 2 O in PFSs was recovered by thermal desorption in the laboratory. Results indicated that the mass of N 2 O adsorbed in PFSs was from 1.5 to 5.5 μg. A specific adsorption pattern was observed for each sampling. In farm 1, the mass of N 2 O adsorbed in the PFSs presented a linear behavior as a function of sampling time, and the most determined coefficient values were higher than 0.80. In farm 2, in addition to the sampling time, the N 2 O concentration and the air flow rate presented an effect on the mass adsorbed in the PFSs. On the other hand, comparison of PFSs versus other techniques indicated that PFSs offer different advantages. However, the selectivity and capacity of the adsorbent bed used need to be improved to enhance the use of PFSs proposed as a tool to estimate N 2 O emissions. Graphical Abstract PFSs enabled N 2 O sampling that followed a linear behavior as a function of sampling time. Sampling time, [N 2 O], and air flow rate determined the mass of N 2 O collected in PFSs.
Databáze: MEDLINE
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