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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/24787

    標題: Implication of Nano/Micron Dicarboxylic Acids Associated with a Size-segregated Suburban Aerosol
    作者: Ying I. Tsai
    Chien-Lung Chen
    Su-Ching Kuo
    Li-Ying Hsieh
    貢獻者: 環境工程與科學系
    關鍵字: Dicarboxylic acids
    Mass size sidtributions
    Cloud condensation nuclei
    日期: 2009-08-10
    上傳時間: 2011-11-14 16:37:19 (UTC+8)
    摘要: he distribution of nano/micron dicarboxylic acids in size-segregated suburban aeroslo of southern Taiwan was studied for a PM episode and a non-episodic pollurtion period. Oxalic caid, accounting for 77.3% and 83.9%, respectively, of the total dicarboxylic acid, followed by succinic, malonic, maleic, malic and tartaric acid. The mass emdian aerodynamic diameter (MMAD) of oxalic acid was 0.77um with a bi-modal presence at 0.54um and 18nm during non-episodic pollution and a MMAD of 0.67 um with mono-modal presence at 0.54um in PM episode aerosol. The concomitant formation of oxalic and malonie acid bar tartaric acids were significant nuclei mode species. Nano and condensation mode malic and succinic acids were almost perfectly correlated (r>0.98), suggesting that malic acid accumulated in the atmosphere prior to decomposition into succinic acid.
    Appears in Collections:[環境工程與科學系(所)] 會議論文

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