絮凝-纳氏试剂法测定地表水中的氨氮  

Detection of the Concentration of Ammonia-Nitrogen in Surface Water by Flocculation-Nash Reagent Method

作　　者：古丽娜尔·艾合坦木 吴丽 刘喜 马静如 GU LINAER·AI Hetanmu;WU Li;LIU Xi;MA Jingru(Xinjiang Environmental Monitoring Centre, Urumqi, Xinjiang 830011,China)

机构地区：[1]新疆维吾尔自治区环境监测总站,新疆乌鲁木齐830011

出　　处：《新疆环境保护》2020年第2期35-39,共5页Environmental Protection of Xinjiang

摘　　要：使用微孔滤膜过滤,能有效降低絮凝预处理的实验室空白值,该方法满足地表水中氨氮的测定。当标准物质浓度为0.100~1.60 mg/L时,测定平均值为0.086~1.63 mg/L,RSD值4.01%~8.85%。水样加标回收率为85.4%~106%。实验结果表明,该方法准确可靠、灵敏度好、操作简便,适用于地表水中氨氮分析要求。The use of microporous filter membrane can effectively reduce the laboratory blank of flocculation pretreatment.This method meets the determination of ammonia nitrogen in surface water.When the concentration of the standard substance was 0.100 mg/L^1.60 mg/L,the measured average value was 0.086 mg/L^1.63 mg/L,and the RSD value was 4.01%~8.85%.The recovery rate of water sample spiked was 85.4%~106%.Experimental results showed that the method is accurate,reliable,sensitive and easy to operate,and was suitable for the analysis of ammonia nitrogen in surface water.

关 键 词：氨氮 纳氏试剂比色法 絮凝 沉淀 

分 类 号：X832[环境科学与工程—环境工程]