气候变化领域集成服务门户(CCPortal): Chamber-based insights into the factors controlling epoxydiol (IEPOX) secondary organic aerosol (SOA) yield; composition; and volatility

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DOI	10.5194/acp-19-11253-2019
	Chamber-based insights into the factors controlling epoxydiol (IEPOX) secondary organic aerosol (SOA) yield; composition; and volatility
	D'Ambro E.L.; Schobesberger S.; Gaston C.J.; Lopez-Hilfiker F.D.; Lee B.H.; Liu J.; Zelenyuk A.; Bell D.; Cappa C.D.; Helgestad T.; Li Z.; Guenther A.; Wang J.; Wise M.; Caylor R.; Surratt J.D.; Riedel T.; Hyttinen N.; Salo V.-T.; Hasan G.; Kurtén T.; Shilling J.E.; Thornton J.A.
发表日期	2019
ISSN	16807316
起始页码	11253
结束页码	11265
卷号	19 期号:17
英文摘要	We present measurements utilizing the Filter Inlet for Gases and Aerosols (FIGAERO) applied to chamber measurements of isoprene-derived epoxydiol (IEPOX) reactive uptake to aqueous acidic particles and associated secondary organic aerosol (SOA) formation. Similar to recent field observations with the same instrument, we detect two molecular components desorbing from the IEPOX SOA in high abundance: C5H12O4 and C5H10O3. The thermal desorption signal of the former, presumably 2-methyltetrols, exhibits two distinct maxima, suggesting it arises from at least two different SOA components with significantly different effective volatilities. Isothermal evaporation experiments illustrate that the most abundant component giving rise to C5H12O4 is semi-volatile, undergoing nearly complete evaporation within 1 h while the second, less volatile component remains unperturbed and even increases in abundance. We thus confirm, using controlled laboratory studies, recent analyses of ambient SOA measurements showing that IEPOX SOA is of very low volatility and commonly measured IEPOX SOA tracers such as C5H12O4 and C5H10O3, presumably 2-methyltetrols and C5-alkene triols or 3-MeTHF-3,4-diols, result predominantly from thermal decomposition in the FIGAERO-CIMS. We infer that other measurement techniques using thermal desorption or prolonged heating for analysis of SOA components may also lead to reported 2-methyltetrols and C5-alkene triols or 3-MeTHF-3,4-diol structures. We further show that IEPOX SOA volatility continues to evolve via acidity-enhanced accretion chemistry on the timescale of hours, potentially involving both 2-methyltetrols and organosulfates. © Author(s) 2019. This work is distributed under the Creative Commons Attribution 4.0 License.
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/144170
作者单位	Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Chemistry, University of Washington, Seattle, WA, United States; Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, United States; Department of Civil and Environmental Engineering, University of California, Davis, CA, United States; Atmospheric Science Graduate Group, University of California, Davis, CA, United States; Environmental and Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, United States; Department of Math and Science, Concordia University, Portland, OR, United States; Department of Environmental Sciences and Engineering, Gillings School of Global and Public Health, University of North Carolina, Chapel Hill, NC, United States; De...
推荐引用方式 GB/T 7714	D'Ambro E.L.,Schobesberger S.,Gaston C.J.,et al. Chamber-based insights into the factors controlling epoxydiol (IEPOX) secondary organic aerosol (SOA) yield; composition; and volatility[J],2019,19(17).
APA	D'Ambro E.L..,Schobesberger S..,Gaston C.J..,Lopez-Hilfiker F.D..,Lee B.H..,...&Thornton J.A..(2019).Chamber-based insights into the factors controlling epoxydiol (IEPOX) secondary organic aerosol (SOA) yield; composition; and volatility.Atmospheric Chemistry and Physics,19(17).
MLA	D'Ambro E.L.,et al."Chamber-based insights into the factors controlling epoxydiol (IEPOX) secondary organic aerosol (SOA) yield; composition; and volatility".Atmospheric Chemistry and Physics 19.17(2019).