Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-9681-2019 |
Gas-phase pyrolysis products emitted by prescribed fires in pine forests with a shrub understory in the southeastern United States | |
Scharko, Nicole K.1; Oeck, Ashley M.1; Myers, Tanya L.1; Tonkyn, Russell G.1; Banach, Catherine A.1; Baker, Stephen P.2; Lincoln, Emily N.2; Chong, Joey3; Corcoran, Bonni M.3; Burke, Gloria M.3; Ottmar, Roger D.4; Restaino, Joseph C.5; Weise, David R.3; Johnson, Timothy J.1 | |
2019-08-01 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:15页码:9681-9698 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | In this study we identify pyrolysis gases from prescribed burns conducted in pine forests with a shrub under-story captured using a manual extraction device. The device selectively sampled emissions ahead of the flame front, minimizing the collection of oxidized gases, with the captured gases analyzed in the laboratory using infrared (IR) absorption spectroscopy. Results show that emission ratios (ERs) relative to CO for ethene and acetylene were significantly greater than in previous fire studies, suggesting that the sample device was able to collect gases predominantly generated prior to ignition. Further evidence that ignition had not begun was corroborated by novel IR detections of several species, in particular naphthalene. With regards to oxygenated species, several aldehydes (acrolein, furaldehyde, acetaldehyde, formaldehyde) and carboxylic acids (formic, acetic) were all observed; results show that ERs for acetaldehyde were noticeably greater, while ERs for formaldehyde and acetic acid were lower compared to other studies. The acetylene-to-furan ratio also suggests that high-temperature pyrolysis was the dominant process generating the collected gases. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000478719100001 |
WOS关键词 | TRANSFORM INFRARED-SPECTROSCOPY ; BIOMASS-BURNING EMISSIONS ; OPEN-PATH FTIR ; POLYCYCLIC AROMATIC-HYDROCARBONS ; ORGANIC-COMPOUND EMISSIONS ; TRACE GASES ; LABORATORY MEASUREMENTS ; ATMOSPHERIC CHEMISTRY ; N2O PRECURSORS ; VIBRATIONAL ASSIGNMENTS |
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/185377 |
专题 | 地球科学 |
作者单位 | 1.Pacific Northwest Natl Labs, Richland, WA 99354 USA; 2.USDA, Forest Serv, Rocky Mt Res Stn, Missoula, MT USA; 3.USDA, Forest Serv, Pacific Southwest Res Stn, Riverside, CA USA; 4.USDA, Forest Serv, Pacific Southwest Res Stn, Seattle, WA USA; 5.Univ Washington, Sch Environm & Forest Sci, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Scharko, Nicole K.,Oeck, Ashley M.,Myers, Tanya L.,et al. Gas-phase pyrolysis products emitted by prescribed fires in pine forests with a shrub understory in the southeastern United States[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(15):9681-9698. |
APA | Scharko, Nicole K..,Oeck, Ashley M..,Myers, Tanya L..,Tonkyn, Russell G..,Banach, Catherine A..,...&Johnson, Timothy J..(2019).Gas-phase pyrolysis products emitted by prescribed fires in pine forests with a shrub understory in the southeastern United States.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(15),9681-9698. |
MLA | Scharko, Nicole K.,et al."Gas-phase pyrolysis products emitted by prescribed fires in pine forests with a shrub understory in the southeastern United States".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.15(2019):9681-9698. |
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