頁籤選單縮合
題 名 | Estimation the Variation and Composition of Atmospheric Pollutants in Da-Du Mountain=大肚山空氣中污染物質變化與成份比較之研究 |
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作 者 | 方國權; 張鎮南; 吳玉琛; 范煥榮; 楊建國; | 書刊名 | 弘光學報 |
卷 期 | 36 2000.10[民89.10] |
頁 次 | 頁161-173 |
分類號 | 445.63 |
關鍵詞 | 空氣污染; 污染物質; Daytime; Nighttime; Fine and coarse particle; |
語 文 | 英文(English) |
英文摘要 | Daily average concentrations of fine, coarse particulates and TSP samples have been measured simultaneously at daytime and nighttime periods by using Universal and PS-1 sampler in suburban area of central Taiwan from June to August 1999. The samples were analyzed by using atomic absorption spectrometry to determine the fine and coarse particulate concentrations of metallic elements (Ca, Fe, Mn, Pb, Cu, Zn and Cr). The concentration of PM □ and TSP showed a decreased trend for the daytime period. The fine particle concentrations were almost greater than and were about two times as that of coarse particulate concentrations. The averaged fine particulate concentrations at daytime are higher than at nighttime. Ca and Fe were mostly in the coarse particulate mode. The correlation coefficients were 0.63 and 0.69 for elements Ca and Fe in the coarse particle mode for day and night period, receptively. Pb showed a similar distribution ratios with Mn for the fine to coarse particle ratios at both day and night period. Pb and Mn are highly correlated for the day (R = 0.78) and night period (R = 0.61) at particle size < 2.5 μ m. Cu and Zn were mainly in fine particle mode at both day and night period. Fe and Ca consist of the major parts of all the elements. Element Mn is the lowest composition among the rest of the heavy metals. |
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