气候变化领域集成服务门户(CCPortal): Occurrence of both nonvolatile and semivolatile carbonaceous air particulate markers using thermal desorption-pyrolysis-gas chromatography-mass spectrometry

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DOI	10.1016/j.atmosenv.2020.118058
	Occurrence of both nonvolatile and semivolatile carbonaceous air particulate markers using thermal desorption-pyrolysis-gas chromatography-mass spectrometry
	Nespor B.; Cochran R.; Jeong H.; Bowman F.; Delene D.; Kozliak E.; Kubátová A.
发表日期	2020
ISSN	13522310
英文摘要	Particulate matter (PM) occurring in the atmosphere is a complex mix of organic species that originate from many sources due to long range transport. Many anthropogenic and biogenic sources have unique chemical components that enable their use as atmospheric markers of emissions. Application of thermal desorption–pyrolysis coupled with gas chromatography-mass spectrometry (TD-Pyr-GC-MS) enabled the characterization of both semivolatile and nonvolatile atmospheric markers in PM, both of which are difficult to characterize using traditional TD or solvent extraction alone. The nonvolatile organic PM fraction was found to be significant based on thermal optical analysis (TOA) quantification, with 73–87% of organic carbon (OC) evolving at temperatures above 400 °C (i.e., Pyr). The semivolatile organic carbon (SVOC) fraction (i.e., TD) of PM featured distinct profiles of alkanes, fatty acids, fatty acid methyl esters and 2-ring polycyclic aromatic hydrocarbons (PAHs), mostly associated with biogenic origin. By contrast, in the Pyr fractions of carbonaceous PM, highly abundant homologous series of n-alkenes, n-alkylbenzenes, PAHs, n-alkanes, and substituted phenols were identified. The occurrence of these compounds is conveyed through newly developed pyrolytic indicators reflecting the breakdown of biogenic sources, e.g., plant lipids, although certain sampling periods showed a contribution of anthropogenic origin. These previously unresolved biogenic and anthropogenic Pyr profiles provide a more representative characterization of atmospheric PM that can help in identifying emission sources. © 2020 Elsevier Ltd
英文关键词	Atmospheric chemical markers; Organic carbon; Particulate matter; Pyrolysis; Thermal desorption; Thermal optical analysis
语种	英语
scopus关键词	Atmospheric chemistry; Fatty acids; Lipids; Mass spectrometry; Organic carbon; Paraffins; Particles (particulate matter); Polycyclic aromatic hydrocarbons; Pyrolysis; Solvent extraction; Thermal desorption; Anthropogenic origin; Atmospheric markers; Fatty acid methyl ester; Gas chromatography-mass spectrometry; Long range transport; Polycyclic aromatic hydrocarbons (PAHS); Pyrolysis-gas chromatography- mass spectrometries; Thermal-optical analysis; Gas chromatography
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145191
作者单位	Chemistry Department, University of North Dakota, 151 Cornell St., Grand Forks, ND, United States; Department of Chemical Engineering, University of North Dakota, 243 Centennial Dr., Grand Forks, ND, United States; Department of Atmospheric Sciences, University of North Dakota, 4149 University Avenue, Grand Forks, ND, United States
推荐引用方式 GB/T 7714	Nespor B.,Cochran R.,Jeong H.,et al. Occurrence of both nonvolatile and semivolatile carbonaceous air particulate markers using thermal desorption-pyrolysis-gas chromatography-mass spectrometry[J],2020.
APA	Nespor B..,Cochran R..,Jeong H..,Bowman F..,Delene D..,...&Kubátová A..(2020).Occurrence of both nonvolatile and semivolatile carbonaceous air particulate markers using thermal desorption-pyrolysis-gas chromatography-mass spectrometry.Atmospheric Environment.
MLA	Nespor B.,et al."Occurrence of both nonvolatile and semivolatile carbonaceous air particulate markers using thermal desorption-pyrolysis-gas chromatography-mass spectrometry".Atmospheric Environment (2020).