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DOI | 10.5194/acp-17-11605-2017 |
Secondary organic aerosol from atmospheric photooxidation of indole | |
Montoya-Aguilera, Julia1; Horne, Jeremy R.2; Hinks, Mallory L.1; Fleming, Lauren T.1; Perraud, Veronique1; Lin, Peng3; Laskin, Alexander3; Laskin, Julia3; Dabdub, Donald2; Nizkorodov, Sergey A.1 | |
2017-09-28 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:18 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Indole is a heterocyclic compound emitted by various plant species under stressed conditions or during flowering events. The formation, optical properties, and chemical composition of secondary organic aerosol (SOA) formed by low-NOx photooxidation of indole were investigated. The SOA yield (1.3 +/- 0.3) was estimated from measuring the particle mass concentration with a scanning mobility particle sizer (SMPS) and correcting it for wall loss effects. The high value of the SOA mass yield suggests that most oxidized indole products eventually end up in the particle phase. The SOA particles were collected on filters and analysed offline with UV-vis spectrophotometry to measure the mass absorption coefficient (MAC) of the bulk sample. The samples were visibly brown and had MAC values of similar to 2m(2) g(-1) at lambda = 300 nm and similar to 0.5m(2) g(-1) at lambda = 400 nm, comparable to strongly absorbing brown carbon emitted from biomass burning. The chemical composition of SOA was examined with several mass spectrometry methods. Direct analysis in real-time mass spectrometry (DART-MS) and nanospray desorption electrospray high-resolution mass spectrometry (nano-DESI-HRMS) were both used to provide information about the overall distribution of SOA compounds. High-performance liquid chromatography, coupled to photodiode array spectrophotometry and high-resolution mass spectrometry (HPLC-PDA-HRMS), was used to identify chromophoric compounds that are responsible for the brown colour of SOA. Indole derivatives, such as tryptanthrin, indirubin, indigo dye, and indoxyl red, were found to contribute significantly to the visible absorption spectrum of indole SOA. The potential effect of indole SOA on air quality was explored with an airshed model, which found elevated concentrations of indole SOA during the afternoon hours contributing considerably to the total organic aerosol under selected scenarios. Because of its high MAC values, indole SOA can contribute to decreased visibility and poor air quality. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000411884400002 |
WOS关键词 | COAST AIR BASIN ; RESOLUTION MASS-SPECTROMETRY ; ANIMAL FEEDING OPERATIONS ; BROWN CARBON ; MOLECULAR CHARACTERIZATION ; OPTICAL-PROPERTIES ; EMISSIONS ; CALIFORNIA ; VOLATILES ; NAPHTHALENE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/31105 |
专题 | 地球科学 |
作者单位 | 1.Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA; 2.Univ Calif Irvine, Dept Mech & Aerosp Engn, Irvine, CA 92697 USA; 3.Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA |
推荐引用方式 GB/T 7714 | Montoya-Aguilera, Julia,Horne, Jeremy R.,Hinks, Mallory L.,et al. Secondary organic aerosol from atmospheric photooxidation of indole[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(18). |
APA | Montoya-Aguilera, Julia.,Horne, Jeremy R..,Hinks, Mallory L..,Fleming, Lauren T..,Perraud, Veronique.,...&Nizkorodov, Sergey A..(2017).Secondary organic aerosol from atmospheric photooxidation of indole.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(18). |
MLA | Montoya-Aguilera, Julia,et al."Secondary organic aerosol from atmospheric photooxidation of indole".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.18(2017). |
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