水生植物总氮测定中两种消化方法的比较  

Comparison of two methods for determination of total nitrogen in aqua-plants

作　　者：景丽洁[1] 袁东海[1] 王晓栋[1] 王连生[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室

出　　处：《环境污染与防治》2005年第5期392-394,i0006,共4页Environmental Pollution & Control

基　　金：国家重点基础研究发展规划"973"资助项目(No.2002CB412307)。

摘　　要：水生植物在人工湿地污水净化过程中起着非常重要的作用,植物组织中氮、磷的含量是考察人工湿地净化污水效能的一个重要指标。采用经典的Kjeldahl(凯氏)消化法和H2SO4-H2O2消化法测定了人工湿地植物体中总氮含量,分析了两种消化方法各自的优缺点,并应用SPSS统计软件对两种方法测得的数据进行统计检验。其结果表明,两种方法测得的总氮含量具有显著性差异。应根据不同的实验要求选择适宜的测定方法。The Aqua-plants play important roles in constructed wetland for sewage treatment. The review of total nitrogen and total phosphorus in the plants is a major index of sewage purification efficiency by constructed wetland. The total nitrogen（TN） in plant samples on constructed wetland was determined by the Kjeldahl with H2 SO4-K2SO4 ＋ CuSO4 ＋ Seand H2SO4-H2O2 digested method, respectively. The advantages and shortcomings of these methods were evaluated, and SPSS was applied to analyze the testing data. The results showed that there was significant difference between the kjeldahl and H2SO4-H2O2 digested method. The suitable determination method should be selected to base demand of further research works.

关 键 词：总氮 水生植物 凯氏法 H2SO4-H2O2 消化法 SPSS 总氮含量 消化方法 SPSS统计软件 定中 

分 类 号：X703[环境科学与工程—环境工程]