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    Please use this identifier to cite or link to this item: http://ir.fy.edu.tw/ir/handle/987654321/15471


    Title: Comparison of ambient particulate mass and water-soluble ionic concentrations by dichotomous and denuder samplers with mass concentrations of EPA monitoring stations in southern Taiwan
    Authors: Chiang, Hung-Lung;Chen, Chih-Yu;Huang, Yao-Sheng
    Contributors: 輔英科技大學 環境工程與科學系
    Keywords: PM10, PM2.5, dichotomous sampler, denuder sampler
    Date: 2014-01-01
    Issue Date: 2014-08-08 13:27:55 (UTC+8)
    Abstract: Three stations were selected to determine the concentrations of ambient particulate matter (PM) for comparison with monitoring data of the Taiwan Environmental Protection Agency (TEPA). A dichotomous sampler was equipped with quartz fiber filters to take PM2.5 and PM2-5-10, and a denuder sampler was equipped with a Teflon filter PM2.5. PM10 and PM2.5 mass concentrations were compared to the TEPA data, and the difference of the principal water-soluble inorganic ions in PM was determined using the dichotomous and denuder sampler systems. Results indicated that the PM10 concentration at the TEPA monitoring station was 2-15% higher than the dichotomous sampler. PM2.5 concentrations of the TEPA monitoring station were 9-16% higher than the dichotomous sampler and less than 10% higher for the denuder sampler. Volatile ionic species such as nitrate, ammonium, and chloride ions in the dichotomous sampler were lower than in the denuder sampler with Teflon filters, and the average content ratio of the dichotomous and denuder samplers was 0.53 for chloride ions, 0.61 for nitrate, 0.66 for ammonium, 0.88 for sulfate, 1.08 for sodium, 0.99 for potassium, 0.92 for magnesium and 1.13 for calcium. Therefore, artifact effects for ionic species and mass concentration should be considered in the use of a dichotomous sampler with a quartz filter.
    Relation: Sustain. Environ. Res 24(1),1-11
    Appears in Collections:[環境工程與科學系] 期刊論文

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