淡江大學機構典藏:Item 987654321/95668
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 62805/95882 (66%)
造訪人次 : 3902754      線上人數 : 290
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧：
  • 您可在西文檢索詞彙前後加上"雙引號"，以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋，建議至進階搜尋限定作者欄位，可獲得較完整資料
    •  進階搜尋


    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/95668


    題名: Determination of the Chemical Oxgen Demand in the Wastewater Using Microwave Energy：The Comparison between the Closed Method and the Open Focus Reflux Method
    作者: 姜禮城;許道平
    貢獻者: 淡江大學水資源及環境工程學系
    關鍵詞: 化學需氧量;微波能;回流;廢水;Chemical Oxygen Demand;Microwave Energy;Reflux;Wastewater
    日期: 1999-05
    上傳時間: 2014-02-12 20:36:32 (UTC+8)
    摘要: In environmental analytic chemistry microwave-assisted methods have been increased rapidly in recent years. A closed vessel method and another open focus reflux method for the determination of chemical oxygen demand (COD) both based on using microwave energy in the digestion-oxidation step are described. The goals of this study are develop the microwave mercury-free for COD determination and to compare between the open focus and the closed vessel sample preparation methods. The optimized conditions for the closed vessel method are: sample, 5ml; (0.55% Ag/sup +/) su1furic acid, 7ml; 0.0705N silver nitrate,1ml; 0.25N potassium dichromate, 2ml; (using domestic microwave oven) power: 414W, reaction time: 4mins. The optimized conditions for the open focus reflux method are: sample, 5m1 (0.55% Ag/sup +/)sulfuric acid. 7m1; 0.0705N silver nitrate, 1ml; 0.25N potassium dichromate, 2m1 (using open focus microwave oven) power: 300W, reaction time: 3mins. The average recovery of the closed vessel method for APG samples were 98.3% and S. D. 1.8%. The average recovery of the open focus reflux method for APG sample was 98.7% and S. D. 1.2%. The range of real samples recovery 85-l10% and S. D. 2.1-8.0%.
    關聯: 第七屆分析化學技術交流研討會暨一九九九台北國際分析化學研討會會後會:研討會會程與論文摘要=7th Annual Conference for Technical Communication on Analytical Chemistry and 1999 International Chemical Conference, Taipei: Analytical Chemistry--Post Conference: Final Program & Abstract Book，頁96-96
    顯示於類別:[水資源及環境工程學系暨研究所] 會議論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    Determination of the Chemical Oxgen Demand in the Wastewater Using Microwave Energy_西文摘要.docx13KbMicrosoft Word145檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋