摘要
应用连续流动分析仪对环境水样中的NO-3-N进行了分析,简述了试剂浓度的确定原则和编写运行程序的方法。通过对标准样品的多次测定,测定值均在其保证值范围内,相对标准差为0 7%,准确度高,精密度好。方法检测限可达0 003mg/LNO-3-N,环境水样加标回收率在94%～102%之间,样品分析速率可达50个/h。
To detect nitrite in environmental water with continuous flowing analyzer.The determination principle of reagent concentration and working procedure was introduced .Test result in many times indicated that the detection value was all in the control limit.The relative standard deviation was 0 .7% with high accuracy .The detection limit was 0 .0 0 3mg/LNO-3 -N ,recove ryrate of added standard was 94%～ 1 0 2 % .Test rate can reach 5 0per hour.
出处
《环境监测管理与技术》
2003年第1期36-37,共2页
The Administration and Technique of Environmental Monitoring
