次溴酸盐氧化法测定海水中氨氮试验条件的优化  

Optimization of Test Conditions of Ammonia Nitrogen in Seawater by Hypobromite Oxidimetry Method

作　　者：任妍冰 李婷婷 刘园园 姚远 

机构地区：[1]连云港市环境监测中心站,江苏连云港222001

出　　处：《环境监测管理与技术》2013年第3期44-46,共3页The Administration and Technique of Environmental Monitoring

摘　　要：对次溴酸盐氧化法测定海水中氨氮的试验条件进行优化,考察了温度、氧化时间、次溴酸盐用量、氨基酸等影响因素,以及干扰离子对测定的影响。方法在0 mg/L～0.100 mg/L范围内线性良好,检出限为0.8μg/L,标准溶液平行测定的RSD为4.4%,能力验证样品的测定结果合格。The experimental conditions for the determination of ammonia nitrogen in seawater by hypobro-mite oxidimetry method were optimized. The influence of reaction time, temperature, hypobromite＇s content and amino acids on the quantitation. Interfering ion and other effects on the experimental results were discussed too. The calibration curve showed a good linearity from 0 mg/L to 0. 100 mg/L, the detection limit is 0.8 μg/L. Replicate analysis of standard solution shows the relative standard deviation of 4.4%. Test results of national standard material obtained from current method meet the requirement.

关 键 词：氨氮 次溴酸盐氧化法 海水 

分 类 号：O657.32[理学—分析化学]