水资源与水工程学报2011，Vol.22Issue(1)：66-68,3.
红壤丘陵区包气带水样氨氮测定方法的改进
Improvement of measaring method for ammonia nitrogen unsaturated zone water sample in hilly red soil
摘要
Abstract
Based on the method of Nessler's reagent photometry, the ammonia nitrogen of water sample in hilly red soil unsaturated zone was analysed through precipitation with ZnSO4 and NaOH for clarified water in different depth of Unsaturated Zone. This method solved the problems which the water samples were yellow and muddy after adding Nessler's reagent, the masking effect of Potassium sodium tartrate was failure when the contents of Metal ions such as Ca, Mg, Fe and so on in water were higher. The comparative analysis was conducted from the compensation and correction, the return rate of standard addition and the reliability test of the method, the return rate of standard addition after the compensation and correction is 98％ ～ 102％ , the results have no significant differences between the improved method and the distillation method by t test with p ＞ 0. 05.关键词
纳氏试剂/氨氮测定/浊度补偿校正/加标回收率分类
资源环境引用本文复制引用
陈建平,徐慧慧,吴迪,王明玉,张宪良..红壤丘陵区包气带水样氨氮测定方法的改进[J].水资源与水工程学报,2011,22(1):66-68,3.基金项目
中国科学院百人计划项目(99T3005WA2) （99T3005WA2）
