Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-2053-2017 |
Evaluation of anthropogenic secondary organic aerosol tracers from aromatic hydrocarbons | |
Al-Naiema, Ibrahim M.; Stone, Elizabeth A. | |
2017-02-10 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Products of secondary organic aerosol (SOA) from aromatic volatile organic compounds (VOCs) - 2,3-dihydroxy-4-oxopentanoic acid, dicarboxylic acids, nitromonoaromatics, and furandiones - were evaluated for their potential to serve as anthropogenic SOA tracers with respect to their (1) ambient concentrations and detectability in PM2.5 in Iowa City, IA, USA; (2) gas-particle partitioning behaviour; and (3) source specificity by way of correlations with primary and secondary source tracers and literature review. A widely used tracer for toluene-derived SOA, 2,3-dihydroxy-4-oxopentanoic acid was only detected in the particle phase (F-p = 1) at low but consistently measurable ambient concentrations (averaging 0.3 ngm(-3)). Four aromatic dicarboxylic acids were detected at relatively higher concentrations (9.1-34.5 ng m(-3)), of which phthalic acid was the most abundant. Phthalic acid had a low particle-phase fraction (F-p = 0.26) likely due to quantitation interferences from phthalic anhydride, while 4-methylphthalic acid was predominantly in the particle phase (F-p = 0.82). Phthalic acid and 4-methylphthalic acid were both highly correlated with 2,3-dihydroxy-4-oxopentanoic acid (r(s) = 0.73, p = 0.003; r(s) = 0.80, p < 0.001, respectively), suggesting that they were derived from aromatic VOCs. Isophthalic and terephthalic acids, however, were detected only in the particle phase (F-p = 1), and correlations suggested association with primary emission sources. Nitromonoaromatics were dominated by particle-phase concentrations of 4-nitrocatechol (1.6 ngm(-3)) and 4-methyl-5-nitrocatechol (1.6 ngm(-3)) that were associated with biomass burning. Meanwhile, 4-hydroxy-3-nitrobenzyl alcohol was detected in a lower concentration (0.06 ngm(-3)) in the particle phase only (F-p = 1) and is known as a product of toluene photooxidation. Furandiones in the atmosphere have only been attributed to the photooxidation of aromatic hydrocarbons; however the substantial partitioning toward the gas phase (F-p <= 0.16) and their water sensitivity limit their application as tracers. The outcome of this study is the demonstration that 2,3-dihydroxy-4-oxopentanoic acid, phthalic acid, 4-methylphthalic acid, and 4-hydroxy-3-nitrobenzyl alcohol are good candidates for tracing SOA from aromatic VOCs. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395129000002 |
WOS关键词 | MIDWESTERN UNITED-STATES ; PARTICULATE MATTER ; DICARBOXYLIC-ACIDS ; MASS-SPECTROMETRY ; AMBIENT AIR ; MOLECULAR COMPOSITION ; ATMOSPHERIC AEROSOLS ; CHEMICAL-COMPOSITION ; HYDROXYL RADICALS ; PHOTOOXIDATION |
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/17295 |
专题 | 地球科学 |
作者单位 | Univ Iowa, Dept Chem, Iowa City, IA 52242 USA |
推荐引用方式 GB/T 7714 | Al-Naiema, Ibrahim M.,Stone, Elizabeth A.. Evaluation of anthropogenic secondary organic aerosol tracers from aromatic hydrocarbons[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(3). |
APA | Al-Naiema, Ibrahim M.,&Stone, Elizabeth A..(2017).Evaluation of anthropogenic secondary organic aerosol tracers from aromatic hydrocarbons.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(3). |
MLA | Al-Naiema, Ibrahim M.,et al."Evaluation of anthropogenic secondary organic aerosol tracers from aromatic hydrocarbons".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.3(2017). |
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