Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-8357-2017 |
Comprehensive atmospheric modeling of reactive cyclic siloxanes and their oxidation products | |
Janechek, Nathan J.1,2; Hansen, Kaj M.3; Stanier, Charles O.1,2 | |
2017-07-10 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Denmark |
英文摘要 | Cyclic volatile methyl siloxanes (cVMSs) are important components in personal care products that transport and react in the atmosphere. Octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), dodecamethylcyclohexasiloxane (D6), and their gas-phase oxidation products have been incorporated into the Community Multiscale Air Quality (CMAQ) model. Gas-phase oxidation products, as the precursor to secondary organic aerosol from this compound class, were included to quantify the maximum potential for aerosol formation from gas-phase reactions with OH. Four 1-month periods were modeled to quantify typical concentrations, seasonal variability, spatial patterns, and vertical profiles. Typical model concentrations showed parent compounds were highly dependent on population density as cities had monthly averaged peak D5 concentrations up to 432 ng m(-3). Peak oxidized D5 concentrations were significantly less, up to 9 ng m(-3), and were located downwind of major urban areas. Model results were compared to available measurements and previous simulation results. Seasonal variation was analyzed and differences in seasonal influences were observed between urban and rural locations. Parent compound concentrations in urban and peri-urban locations were sensitive to transport factors, while parent compounds in rural areas and oxidized product concentrations were influenced by large-scale seasonal variability in OH. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405302200002 |
WOS关键词 | VOLATILE METHYL SILOXANES ; PERSONAL CARE PRODUCTS ; LONG-RANGE TRANSPORT ; PASSIVE AIR SAMPLER ; GAS-PHASE REACTIONS ; ORGANOSILICON COMPOUNDS ; PARTITION-COEFFICIENTS ; AMBIENT AIR ; METHYLSILOXANES ; DECAMETHYLCYCLOPENTASILOXANE |
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/30932 |
专题 | 地球科学 |
作者单位 | 1.Univ Iowa, Dept Chem & Biochem Engn, Iowa City, IA 52242 USA; 2.Univ Iowa, IIHR Hydrosci & Engn, Iowa City, IA 52242 USA; 3.Aarhus Univ, Dept Environm Sci, Roskilde, Denmark |
推荐引用方式 GB/T 7714 | Janechek, Nathan J.,Hansen, Kaj M.,Stanier, Charles O.. Comprehensive atmospheric modeling of reactive cyclic siloxanes and their oxidation products[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(13). |
APA | Janechek, Nathan J.,Hansen, Kaj M.,&Stanier, Charles O..(2017).Comprehensive atmospheric modeling of reactive cyclic siloxanes and their oxidation products.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(13). |
MLA | Janechek, Nathan J.,et al."Comprehensive atmospheric modeling of reactive cyclic siloxanes and their oxidation products".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.13(2017). |
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