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    A New Volatility Tandem Differential Mobility Analyzer to Measure the Volatile Sulfuric Acid Aerosol Fraction

    Source: Journal of Atmospheric and Oceanic Technology:;1999:;volume( 016 ):;issue: 006::page 760
    Author:
    Orsini, D. A.
    ,
    Wiedensohler, A.
    ,
    Stratmann, F.
    ,
    Covert, D. S.
    DOI: 10.1175/1520-0426(1999)016<0760:ANVTDM>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A volatility tandem differential mobility analyzer (VTDMA) was developed with the intention to measure the fraction of sulfuric acid in marine fine aerosols (Dp < 150 nm). This work focused on the design and calibration of an aerosol conditioner for the standard tandem differential mobility analyzer that heated a selected aerosol sample in a controlled manner while it minimized sample losses due to thermophoresis and diffusion. In designing an aerosol heater, the behavior of a monodisperse aerosol was modeled in a heated flow tube with a temperature-controlled wall under laminar flow conditions. This allowed for initial estimations of aerosol heating rates, heater dimensions, and aerosol deposition losses within the flow tube. The evaporation rate of sulfuric acid particles was also predicted and used to determine the minimum length of the aerosol heater needed to completely evaporate a sulfuric acid aerosol. Finally, the VTDMA was calibrated and tested for its ability to detect a sulfuric acid mass fraction in a monodisperse aerosol.
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      A New Volatility Tandem Differential Mobility Analyzer to Measure the Volatile Sulfuric Acid Aerosol Fraction

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4151090
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    • Journal of Atmospheric and Oceanic Technology

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    contributor authorOrsini, D. A.
    contributor authorWiedensohler, A.
    contributor authorStratmann, F.
    contributor authorCovert, D. S.
    date accessioned2017-06-09T14:14:22Z
    date available2017-06-09T14:14:22Z
    date copyright1999/06/01
    date issued1999
    identifier issn0739-0572
    identifier otherams-1542.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4151090
    description abstractA volatility tandem differential mobility analyzer (VTDMA) was developed with the intention to measure the fraction of sulfuric acid in marine fine aerosols (Dp < 150 nm). This work focused on the design and calibration of an aerosol conditioner for the standard tandem differential mobility analyzer that heated a selected aerosol sample in a controlled manner while it minimized sample losses due to thermophoresis and diffusion. In designing an aerosol heater, the behavior of a monodisperse aerosol was modeled in a heated flow tube with a temperature-controlled wall under laminar flow conditions. This allowed for initial estimations of aerosol heating rates, heater dimensions, and aerosol deposition losses within the flow tube. The evaporation rate of sulfuric acid particles was also predicted and used to determine the minimum length of the aerosol heater needed to completely evaporate a sulfuric acid aerosol. Finally, the VTDMA was calibrated and tested for its ability to detect a sulfuric acid mass fraction in a monodisperse aerosol.
    publisherAmerican Meteorological Society
    titleA New Volatility Tandem Differential Mobility Analyzer to Measure the Volatile Sulfuric Acid Aerosol Fraction
    typeJournal Paper
    journal volume16
    journal issue6
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/1520-0426(1999)016<0760:ANVTDM>2.0.CO;2
    journal fristpage760
    journal lastpage772
    treeJournal of Atmospheric and Oceanic Technology:;1999:;volume( 016 ):;issue: 006
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian