Academic Journal
Identification of secondary aerosol precursors emitted by an aircraft turbofan
| العنوان: | Identification of secondary aerosol precursors emitted by an aircraft turbofan |
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| المؤلفون: | Kılıç, Doğuşhan, Haddad, Imad, Brem, Benjamin T., Bruns, Emily, Bozetti, Carlo, Corbin, Joel, Durdina, Lukas, Huang, Ru-Jin, Jiang, Jianhui, Klein, Felix, Lavi, Avi, Pieber, Simone M., Rindlisbacher, Theo, Rudich, Yinon, Slowik, Jay G., Wang, Jing, Baltensperger, Urs, Prévôt, Andre S. H. |
| المصدر: | eISSN: 1680-7324 |
| سنة النشر: | 2019 |
| المجموعة: | Copernicus Publications: E-Journals |
| الوصف: | Oxidative processing of aircraft turbine-engine exhausts was studied using a potential aerosol mass (PAM) chamber at different engine loads corresponding to typical flight operations. Measurements were conducted at an engine test cell. Organic gases (OGs) and particle emissions pre- and post-PAM were measured. A suite of instruments, including a proton-transfer-reaction mass spectrometer (PTR-MS) for OGs, a multigas analyzer for CO, CO 2 , NO x , and an aerosol mass spectrometer (AMS) for nonrefractory particulate matter (NR-PM 1 ) were used. Total aerosol mass was dominated by secondary aerosol formation, which was approximately 2 orders of magnitude higher than the primary aerosol. The chemical composition of both gaseous and particle emissions were also monitored at different engine loads and were thrust-dependent. At idling load (thrust 2.5–7 %), more than 90 % of the secondary particle mass was organic and could mostly be explained by the oxidation of gaseous aromatic species, e.g., benzene; toluene; xylenes; tri-, tetra-, and pentamethyl-benzene; and naphthalene. The oxygenated-aromatics, e.g., phenol, furans, were also included in this aromatic fraction and their oxidation could alone explain up to 25 % of the secondary organic particle mass at idling loads. The organic fraction decreased with thrust level, while the inorganic fraction increased. At an approximated cruise load sulfates comprised 85 % of the total secondary particle mass. |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://acp.copernicus.org/articles/18/7379/2018/ |
| DOI: | 10.5194/acp-18-7379-2018 |
| الاتاحة: | https://doi.org/10.5194/acp-18-7379-2018 https://acp.copernicus.org/articles/18/7379/2018/ |
| رقم الانضمام: | edsbas.7C7E7718 |
| قاعدة البيانات: | BASE |
| DOI: | 10.5194/acp-18-7379-2018 |
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