Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-10405-2017 |
Characterizing source fingerprints and ageing processes in laboratory-generated secondary organic aerosols using proton-nuclear magnetic resonance (H-1-NMR) analysis and HPLC HULIS determination | |
Zanca, Nicola1,5; Lambe, Andrew T.2,3; Massoli, Paola2; Paglione, Marco1; Croasdale, David R.3; Parmar, Yatish3; Tagliavini, Emilio4; Gilardoni, Stefania1; Decesari, Stefano1 | |
2017-09-06 | |
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:17 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; USA |
英文摘要 | The study of secondary organic aerosol (SOA) in laboratory settings has greatly increased our knowledge of the diverse chemical processes and environmental conditions responsible for the formation of particulate matter starting from biogenic and anthropogenic volatile compounds. However, characteristics of the different experimental setups and the way they impact the composition and the timescale of formation of SOA are still subject to debate. In this study, SOA samples were generated using a potential aerosol mass (PAM) oxidation flow reactor using alpha-pinene, naphthalene and isoprene as precursors. The PAM reactor facilitated exploration of SOA composition over atmospherically relevant photochemical ageing timescales that are unattainable in environmental chambers. The SOA samples were analyzed using two state-of-the-art analytical techniques for SOA characterization - proton nuclear magnetic resonance (H-1-NMR) spectroscopy and HPLC determination of humic-like substances (HULIS). Results were compared with previous Aerodyne aerosol mass spectrometer (AMS) measurements. The combined H-1-NMR, HPLC, and AMS datasets show that the composition of the studied SOA systems tend to converge to highly oxidized organic compounds upon prolonged OH exposures. Further, our H-1-NMR findings show that only alpha-pinene SOA acquires spectroscopic features comparable to those of ambient OA when exposed to at least 1 x 10(12) molec OH cm(-3) x s OH exposure, or multiple days of equivalent atmospheric OH oxidation. Over multiple days of equivalent OH exposure, the formation of HULIS is observed in both alpha-pinene SOA and in naphthalene SOA (maximum yields: 16 and 30 %, respectively, of total analyzed water-soluble organic carbon, WSOC), providing evidence of the formation of humic-like polycarboxylic acids in unseeded SOA. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409464900002 |
WOS关键词 | HUMIC-LIKE SUBSTANCES ; OXIDATION FLOW REACTORS ; VAPOR WALL LOSS ; CHEMICAL-COMPOSITION ; REAL-TIME ; ISOPRENE EPOXYDIOLS ; ATMOSPHERIC AEROSOL ; RADICAL CHEMISTRY ; PO VALLEY ; PRODUCTS |
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/30860 |
专题 | 地球科学 |
作者单位 | 1.Natl Res Council Italy CNR, ISAC, I-40129 Bologna, Italy; 2.Aerodyne Res Inc, Billerica, MA 01821 USA; 3.Boston Coll, Chem Dept, Chestnut Hill, MA 02467 USA; 4.Univ Bologna, Dept Chem Giacomo Ciamician, I-40126 Bologna, Italy; 5.Proambiente Scrl, I-40129 Bologna, Italy |
推荐引用方式 GB/T 7714 | Zanca, Nicola,Lambe, Andrew T.,Massoli, Paola,et al. Characterizing source fingerprints and ageing processes in laboratory-generated secondary organic aerosols using proton-nuclear magnetic resonance (H-1-NMR) analysis and HPLC HULIS determination[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(17). |
APA | Zanca, Nicola.,Lambe, Andrew T..,Massoli, Paola.,Paglione, Marco.,Croasdale, David R..,...&Decesari, Stefano.(2017).Characterizing source fingerprints and ageing processes in laboratory-generated secondary organic aerosols using proton-nuclear magnetic resonance (H-1-NMR) analysis and HPLC HULIS determination.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(17). |
MLA | Zanca, Nicola,et al."Characterizing source fingerprints and ageing processes in laboratory-generated secondary organic aerosols using proton-nuclear magnetic resonance (H-1-NMR) analysis and HPLC HULIS determination".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.17(2017). |
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