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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/4866

    Title: Characteristics of Water-Soluble Ionic Species in Fine (PM2.5)and Coarse Particulate Matter (PM10–2.5) in Kaohsiung,Southern Taiwan
    Authors: Hsu Yi-Chyun(許逸群)
    Lai Mei-Hsiu
    Wang Wei-Chi
    Chiang Hung-Lung
    Shieh Zhu-Xin
    Date: 2008
    Issue Date: 2009-09-11 14:56:34 (UTC+8)
    Abstract: Eleven ionic species and fine and coarse particle mass concentrations of fine (PM2.5) and coarse (PM10–2.5) particulate
    matter were investigated in Kaohsiung, southern Taiwan. The PM2.5 and PM10–2.5 particulate concentrations were 49–64 and 34–37 gm3, respectively. Fiftyfive to 64% of the particulate matter less than 10 m in
    aerodynamic diameter (PM10) mass was attributed to the PM2.5. PM2.5 concentrations at Daliao (a rural and industrial complex area) were higher than at Tzuoying (an urban and industrial complex area). Ionic species contributed
    45–53% and 42–45% of PM2.5 and PM10, respectively. Potassium ions (K), sulfate (SO4 2), and ammonium (NH4) were predominant in PM2.5, whereas sodium, calcium, and magnesium ions were foremost in
    PM10–2.5. Nitrate (NO3 ) existed in both the PM2.5 and PM10–2.5. Chloride (Cl), NO3
    , and NH4  concentrations were higher at night than during the day, and they
    were easily transferred into the gas phase by photochemical reactions and temperature-induced volatilization. The NH4 /SO4
    2 ratios were 2.6 and 2.5 at Daliao and Tzuoying, respectively, which indicated that both sampling
    sites were rich in NH4
    . Therefore, ammonium nitrate
    would be present in the area.
    Relation: Journal of the Air & Waste Management Association
    Appears in Collections:[環境工程系所] 期刊論文

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