文化大學機構典藏 CCUR:Item 987654321/23141
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    Please use this identifier to cite or link to this item: https://irlib.pccu.edu.tw/handle/987654321/23141


    Title: 影響北台灣地區雨水成份的機制
    Authors: 許嘉閔
    Contributors: 化學系
    Keywords: 雨水
    rainwater
    Date: 2012
    Issue Date: 2012-10-11 10:31:41 (UTC+8)
    Abstract: 本研究主要再次探討華岡地區雨水的化學成份組成和其影響因素，雨水樣品取自於文化大學華岡測站，樣品採樣自2009年4月至2010年7月，總共收集89個雨水樣本(雨量≧0.5mm)。利用離子層析儀來分析雨水中的主要離子Na＋、K＋、Ca2＋、Mg2＋、NH4＋、Cl－、NO3－、SO42－，以及有機酸根離子HCOO－、CH3COO－濃度，並且利用各離子間濃度相關性來分析雨水中各化學成份的可能來源。
    本研究將雨水中Na＋視為來自海洋，雨水中離子成份排除海洋部份，結果發現Mg2＋主要受海鹽飛沫影響，塵土次之；Ca2＋來自塵土飛灰影響，NH4＋受到農業活動影響，NO3－和SO42－主要來自汽機車排放、高溫燃燒的工商業。
    東北季風盛行時期SO42－、Ca2＋和K＋受到塵土作用明顯，且SO42－濃度明顯大於西南氣流時期，主要受到遠距離傳輸影響。從致鹼物質濃度總和和致酸物質濃度總和的比值nss-(Ca2＋＋Mg2＋＋NH4＋)+ K＋/( NO3－＋nss-SO42－)與pH分佈大致上吻合，推測華岡地區雨水酸鹼值受到季節風向和地區性物質中和影響。

    In order to understand the influencing factors on chemical composition of rainwater, the total 89 rainwater samples were collected at Chinese Culture University meteorological observation station.During from April 2009 to July 2010. The rainwater samples were analyzed for pH, major ions(Na＋、K＋、Ca2＋、Mg2＋、NH4＋、Cl－、NO3－、SO42－)and organic ions (HCOO－、CH3COO－). The intercorrelations of chemical composition are applied to understand possible sources of chemical composition in the rainwater.
    Ion species Na＋ is regarded asmarine source in this study, compared to other species of ions to find the possible source. The Mg2＋ comes from sea salt mainly. Ca2＋ comes from dust.NH4＋ is influencing by agriculture. NO3－ and SO42－ come from motor exhausting, incinerator and the factory burning.
    Concentration of SO42－, Ca2＋ and K＋ collected from October to March are higher than those from April to September. Those spices are influenced by long-range transport during the northeasterly monsoon episode. The daily variant acid-base neutralization ratio nss-(Ca2＋＋Mg2＋＋NH4＋)+ K＋/( NO3－＋nss-SO42－) is consistent with pH value during sampling period. The result means that pH of rainwater in Hwa-Kang is influenced by seasonal monsoon and neutralizationprocess of local materials.
    Appears in Collections:[化學系所] 博碩士論文

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