中山醫學大學機構典藏 CSMUIR:Item 310902500/12080
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    题名: Carbonaceous Aerosol Measurements at Coastal, Urban, and Inland Sites in Central Taiwan
    作者: Yu Chi Lin;Man Ting Cheng;Chia Pin Chio;Chung Yih Kuo
    贡献者: 中山醫學大學
    关键词: organic carbon;elemental carbon;secondary organic carbon;optimal Deming regression;OC/EC
    日期: 2009
    上传时间: 2015-08-14T07:56:05Z (UTC)
    ISSN: 1527-5922
    摘要: The concentrations of elemental carbon (EC) and organic carbon (OC) of particulate matter (PM)2.5 were investigated at coastal, urban, and inland sites in central Taiwan during October 1999 and March 2000, and the carbon contents were analyzed using a total organic carbon analyzer (TOC). The results showed that the average EC concentrations at the various sites were from 2.7–4.4 μ g/m3, while the mean OC concentrations were from 6.9–12.3 μ g/m3. Both higher EC and OC levels were found in inland areas. Good correlations of OC and EC were found in coastal and urban areas, indicating that OC was mainly from the primary combustion emissions, whereas OC was weakly correlated with EC at the inland sites, suggesting that the contributions of OC were unrelated combustion sources (i.e., secondary organic carbon). The optimal Deming regression was used to estimate the ratio of OC/EC, leading to calculate the amount of secondary organic aerosols in this study. On average, secondary organic carbon constituted 13%–48% of the total organic carbon for PM2.5 with high levels observed in inland areas. Moreover, higher secondary OC concentration was observed at low wind speed, high relative humidity and high oxidants sum (O3 + NO2) levels atmosphere.
    URI: https://ir.csmu.edu.tw:8080/ir/handle/310902500/12080
    http://dx.doi.org/10.1080/15275920802660188
    關聯: Environmental Forensics Volume 10, Issue 1, 2009
    显示于类别:[公共衛生學系暨碩士班] 期刊論文

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