气候变化领域集成服务门户(CCPortal): Chemical composition; structures; and light absorption of N-containing aromatic compounds emitted from burning wood and charcoal in household cookstoves

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DOI	10.5194/acp-20-14077-2020
	Chemical composition; structures; and light absorption of N-containing aromatic compounds emitted from burning wood and charcoal in household cookstoves
	Xie M.; Zhao Z.; L. Holder A.; D. Hays M.; Chen X.; Shen G.; J. Jetter J.; M. Champion W.
发表日期	2020
ISSN	1680-7316
起始页码	14077
结束页码	14090
卷号	20 期号:22
英文摘要	N-containing aromatic compounds (NACs) are an important group of light-absorbing molecules in the atmosphere. They are often observed in combustion emissions, but their chemical formulas and structural characteristics remain uncertain. In this study, red oakwood and charcoal fuels were burned in cookstoves using the standard water-boiling test (WBT) procedure. Submicron aerosol particles in the cookstove emissions were collected using quartz (Qf) and polytetrafluoroethylene (PTFE) filter membranes positioned in parallel. A backup quartz filter (Qb) was also installed downstream of the PTFE filter to evaluate the effect of sampling artifacts on NAC measurements. Liquid chromatography- mass spectroscopy (LC-MS) techniques identified 17 NAC chemical formulas in the cookstove emissions. The average concentrations of total NACs in Qb samples (0:370:31- 1:790:77 ugm3) were greater than 50%of those observed in the Qf samples (0:510:43-3:912:06 ugm3), and the Qb-to-Qf mass ratios of individual NACs had a range of 0.02-2.71, indicating that the identified NACs might have substantial fractions remaining in the gas phase. In comparison to other sources, cookstove emissions from red oak or charcoal fuels did not exhibit unique NAC structural features but had distinct NAC composition. However, before identifying NAC sources by combining their structural and compositional information, the gas-particle partitioning behaviors of NACs should be further investigated. The average contributions of total NACs to the light absorption of organic matter at D 365 nm (1.10 %-2.57 %) in Qf and Qb samples (10.7 %-21.0 %) are up to 10 times larger than their mass contributions (Qf: 0.31 %-1.01 %; Qb: 1.08 %- 3.31 %), so the identified NACs are mostly strong light absorbers. To explain more sample extract absorption, future research is needed to understand the chemical and optical properties of high-molecular-weight (e.g., molecular weight, MW> 500 Da) entities in particulate matter. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
英文关键词	absorption; charcoal; chemical composition; chemical compound; cooking appliance; nitrogen; wood; Quercus rubra
语种	英语
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/168951
作者单位	Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, 219 Ningliu Road, Nanjing, 210044, China; Office of Research and Development, Us Environmental Protection Agency, 109 T.W. Alexander Drive, Research Triangle Park, NC 27711, United States; Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China; Oak Ridge Institute for Science and Education (ORISE), Center for Environmental Measurement and Modeling, Office of Research and Development, Us Environmental Protection Agency, 109 T.W. Alexander Drive, Research Triangle Park, NC 27711, United States; State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing, 210023, China
推荐引用方式 GB/T 7714	Xie M.,Zhao Z.,L. Holder A.,et al. Chemical composition; structures; and light absorption of N-containing aromatic compounds emitted from burning wood and charcoal in household cookstoves[J],2020,20(22).
APA	Xie M..,Zhao Z..,L. Holder A..,D. Hays M..,Chen X..,...&M. Champion W..(2020).Chemical composition; structures; and light absorption of N-containing aromatic compounds emitted from burning wood and charcoal in household cookstoves.Atmospheric Chemistry and Physics,20(22).
MLA	Xie M.,et al."Chemical composition; structures; and light absorption of N-containing aromatic compounds emitted from burning wood and charcoal in household cookstoves".Atmospheric Chemistry and Physics 20.22(2020).