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氨氮的测定.doc

2024-08-14

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分类号UDC单位代码10644 密级公开学号本科毕业论文论文题目改进纳氏试剂测生活污水中氨氮含量学生姓名：李晓鸣二级学院：化学化工学院专业：化学工程与工艺班级：2班学号：2011060210 指导教师：王芬完成时间：年月日中国达州 20年月四川文理学院本科毕业论文目录摘要······················································· Abstract································································· 引言·································································· 本实验研究的目的······················································ 2.1本实验研究的内容和意义············································· 水中氨氮的基础知识···················································· 3.1氨氮的性质························································· 3.2氨氮的来源························································· 3.3氨氮的影响························································· 实验研究及分析························································ 4.1水样的保存························································· 4.2水样的预处理······················································· 4.2.1絮凝沉淀法····················································· 4.3纳氏试剂分光光度法测水中氨氮的含量································ 4.3.1方法原理······················································· 4.3.2干扰及消除················································· 4.3.3方法的适用范围··········································· 4.3.4主要仪器··················································· 4.3.5试剂························································ 4.3.6校准曲线··················································· 4.3.7样品测定······················································ 4.3.8计算方法······················································ 纳氏试剂的配制························································ 5.1标准纳氏试剂的配制方法··············································· 5.2改进后纳氏试剂的配制················································· 5.3两种纳氏试剂的比较················································· 注释······························································ 参考文献·································································· 8.致谢·······················

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