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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/1159


    標題: 凱氏氮檢測方法與元素分析儀法測定垃圾中氮含量之比較探討
    作者: 林健榮
    貢獻者: 環境工程與科學系
    日期: 2003
    上傳時間: 2008-06-26 15:52:50 (UTC+8)
    出版者: 台南縣:嘉南藥理科技大學環境工程與科學系
    摘要: 廢棄物之排出量隨國民所得、人口之成長及產業之集中化、大型化而日益增加且性質亦日趨複雜。為求有效清理垃圾,行政院於民國73年9月通過「都市垃圾處理方案」,前行政院衛生署環境保護局據此訂定「都市垃圾處理計畫」,計畫中除積極整、新建垃圾處理廠(廠)外,並將建立都市垃圾基本特性資料列為重點工作項目,作為垃圾管理政策制定、處理處置系統規劃與操作管理之參考;此後,各級政府逐年編列預算委託國內各學術機關辦理垃圾採樣分析工作,迄今已建立台灣地區垃圾基本資料,提供大型都市垃圾焚化廠設計及操作所需基本資料。然而,國內目前相關計畫進行有關垃圾採樣分析工作時,針對元素組成分析項目,大多參考前行政院衛生署環境保護局於民國73年5月公佈之“垃圾採樣分析手冊”。針對垃圾中之氮分析該手冊建議可採用凱氏氮及元素分析法,因不同方法之分析原理、分析條件不盡相同常導致分析結果差異甚鉅,亟待環境檢驗所儘速訂定公告標準檢驗法。
    氮之元素分析儀法係將垃圾中之有機氮於1150℃條件下燃燒氧化成NO2,再藉銅於600℃下還原成NO,最後以TCD進行定量;而凱氏氮分析法係添加硫酸及硫酸銅等於350℃左右消化,將有機氮轉換成氨氮,再以水質分析中氨氮之測定方法進行定量。前述二種分析方法分析原理與方法設備皆不同,亟待比較探討二者應用於垃圾氮分析之差異性與應用可行性。
    本研究將採集台灣地區垃圾樣品經過破碎、球磨後,分別以凱氏氮分析法及元素分析法分析樣品中之乾基氮含量,藉測定垃圾樣品重複分析之偏差及標準樣品之回收率,進行二種垃圾中氮含量分析方法之比較探討,提供有關機關進行相關標準檢測方法研擬之參考。
    The generation amount of municipal solid waste (MSW) depends on the capital of the citizen and the condition of the industrial development, with a tendency of increasing complexity. The EPA in Taiwan has devoted to proposing the corresponding policy for the treatment of increasing MSW. To obtain the information about the MSW physical and chemical characteristics, sampling and analysis projects have been conducted for twenty years. The analysis of the nitrogen content in the MSW was suggested to use elemental analyzer and TKN method, according to the handbook of MSW sampling and analysis issued by EPA, 1984. However, these two methods aere found to be based on different principles and equipments. The results of N analysis by these two methods varied. Therefore, it is important to evaluate the feasibility and difference between two methods. In this study, elemental analyzer and TKN method were used to investigate the precision and error of analysis results with MSW and standard as samples.
    Appears in Collections:[環境工程與科學系(所)] 校內計畫

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