globalchange  > 气候减缓与适应
DOI: 10.1029/2017JD028082
Scopus记录号: 2-s2.0-85050861086
论文题名:
Flight Deployment of a High-Resolution Time-of-Flight Chemical Ionization Mass Spectrometer: Observations of Reactive Halogen and Nitrogen Oxide Species
作者: Lee B.H.; Lopez-Hilfiker F.D.; Veres P.R.; McDuffie E.E.; Fibiger D.L.; Sparks T.L.; Ebben C.J.; Green J.R.; Schroder J.C.; Campuzano-Jost P.; Iyer S.; D'Ambro E.L.; Schobesberger S.; Brown S.S.; Wooldridge P.J.; Cohen R.C.; Fiddler M.N.; Bililign S.; Jimenez J.L.; Kurtén T.; Weinheimer A.J.; Jaegle L.; Thornton J.A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:14
起始页码: 7670
结束页码: 7686
语种: 英语
英文关键词: atmospheric chemistry ; flight deployment ; HRToF-CIMS ; instrument development
英文摘要: We describe the University of Washington airborne high-resolution time-of-flight chemical ionization mass spectrometer (HRToF-CIMS) and evaluate its performance aboard the NCAR-NSF C-130 aircraft during the recent Wintertime INvestigation of Transport, Emissions and Reactivity (WINTER) experiment in February–March of 2015. New features include (i) a computer-controlled dynamic pinhole that maintains constant mass flow-rate into the instrument independent of altitude changes to minimize variations in instrument response times; (ii) continuous addition of low flow-rate humidified ultrahigh purity nitrogen to minimize the difference in water vapor pressure, hence instrument sensitivity, between ambient and background determinations; (iii) deployment of a calibration source continuously generating isotopically labeled dinitrogen pentoxide (15N2O5) for in-flight delivery; and (iv) frequent instrument background determinations to account for memory effects resulting from the interaction between sticky compounds and instrument surface following encounters with concentrated air parcels. The resulting improvements to precision and accuracy, along with the simultaneous acquisition of these species and the full set of their isotopologues, allow for more reliable identification, source attribution, and budget accounting, for example, by speciating the individual constituents of nocturnal reactive nitrogen oxides (NOz = ClNO2 + 2 × N2O5 + HNO3 + etc.). We report on an expanded set of species quantified using iodide-adduct ionization such as sulfur dioxide (SO2), hydrogen chloride (HCl), and other inorganic reactive halogen species including hypochlorous acid, nitryl chloride, chlorine, nitryl bromide, bromine, and bromine chloride (HOCl, ClNO2, Cl2, BrNO2, Br2, and BrCl, respectively). ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113495
Appears in Collections:气候减缓与适应

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作者单位: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Chemical Sciences Division, Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, United States; Department of Chemistry, University of California, Berkeley, CA, United States; Department of Physics, North Carolina A and T State University, Greensboro, NC, United States; NOAA-ISET Center, North Carolina A and T State University, Greensboro, NC, United States; Department of Chemistry, University of Helsinki, Helsinki, Finland; Department of Chemistry, University of Washington, Seattle, WA, United States; Now at Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; National Center for Atmospheric Research, Boulder, CO, United States

Recommended Citation:
Lee B.H.,Lopez-Hilfiker F.D.,Veres P.R.,et al. Flight Deployment of a High-Resolution Time-of-Flight Chemical Ionization Mass Spectrometer: Observations of Reactive Halogen and Nitrogen Oxide Species[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(14)
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