Skip to content
University of Maryland LibrariesDigital Repository at the University of Maryland
    • ログイン
    アイテム表示 
    •   ホーム
    • Theses and Dissertations from UMD
    • UMD Theses and Dissertations
    • アイテム表示
    •   ホーム
    • Theses and Dissertations from UMD
    • UMD Theses and Dissertations
    • アイテム表示
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Vehicular Ammonia Emissions in Baltimore, Maryland

    Thumbnail
    閲覧/開く
    umi-umd-2792.pdf (1.315Mb)
    No. of downloads: 1323

    日付
    2005-08-15
    著者
    Erwin, Amy Corner
    Advisor
    Siefert, Ronald L
    Metadata
    アイテムの詳細レコードを表示する
    抄録
    Atmospheric ammonia is a precursor to the formation of fine particulate matter, which contributes to human health problems and decreased visibility. Atmospheric ammonia may also be transported through wet and dry deposition to water bodies such as the Chesapeake Bay, contributing to excess nutrient loadings that cause eutrophication. Vehicle exhaust contains ammonia, created by a reaction of NOx with H2 in the three-way catalytic converter. Ammonia emissions were measured using a mass balance on the Fort McHenry Tunnel, Baltimore, Maryland. Atmospheric concentrations of gas-phase and particulate-phase ammonium were measured during 2003-2004 using denuders and filter packs. The average vehicle (veh) emission rate for these studies was 8.1 ± 4.3 mg NH3-N veh-1 km-1. We estimate the annual emission of ammonia from vehicles to be 151 metric tons NH3-N yr-1 in Baltimore City and County and 707 metric tons NH3-N yr-1 in all of Maryland.
    URI
    http://hdl.handle.net/1903/2994
    Collections
    • Biology Theses and Dissertations
    • MEES Theses and Dissertations
    • UMD Theses and Dissertations

    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
    Please send us your comments.
    Web Accessibility
     

     

    ブラウズ

    リポジトリ全体コミュニティ/コレクション公開日著者タイトル主題このコレクション公開日著者タイトル主題

    登録利用者

    ログイン登録
    Pages
    About DRUMAbout Download Statistics

    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
    Please send us your comments.
    Web Accessibility