检测管法与纳氏试剂光度法测定氨氮的比较研究  

A Comparative Study on the Detection Tube Method and the Nessler's Reagent Spectrophotometry for Determination of Ammonia Nitrogen

作　　者：王玲玲 王媛媛 王盈 谢志广 

机构地区：[1]河南省环境监测中心,河南郑州450004

出　　处：《环境科学导刊》2012年第1期101-103,共3页Environmental Science Survey

基　　金：水专项<地表水环境质量特定监测项目分析测试方法优化研究>(2009ZX07527-001)

摘　　要：对氨氮真空玻璃检测管法和纳氏试剂光度法进行检出限、精密度、准确度,以及实际样品测试方面的比较研究。研究表明,氨氮检测管的检出限为0.2mg/L,精密度测定的相对标准偏差为0%～5.75%,准确度测定的加标回收率为93%～124%。检测管法和纳氏剂法同时测定多种实际样品,结果两种方法的相对误差为-37.8%～11.8%,结论:检测管法能够满足半定量测试的需求。The comparative study was conducted on vacuum glass detection tube methods and the Nessler＇ s reagent spectrophotometry in respect of detection limit, precision, accuracy and sample testing. It shows that the detection limit of ammonia nitrogen by detection tube is 0. 2mg/L, the relative standard deviation of precision is 0% -5. 75% , and the recovery of standard addition of accuracy is 93% -124%. When testing various actual samples by the two methods, we have found that the relative deviation of both methods is -37. 8% -11. 8%. It is concluded that detection tube method could meet the needs of semi - quantitative test.

关 键 词：氨氮 真空玻璃检测管法 纳氏试剂光度法 

分 类 号：X83[环境科学与工程—环境工程]