纳氏试剂法测定水中低浓度氨氮的预处理方法的改进

李红亮; 赵辉; 许晓翠; 朱泽军

引用本文:	李红亮，赵辉，许晓翠，朱泽军.纳氏试剂法测定水中低浓度氨氮的预处理方法的改进[J].环境监控与预警,2016,8(4):37-39
	LI Hong liang， ZHAO Hui， XU Xiao cui， ZHU Ze jun.Improvement on Pretreatment for the Determination of Low concentration Ammonium Nitrogen in Water Using Nessler Reagent Method[J].Environmental Monitoring and Forewarning,2016,8(4):37-39

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纳氏试剂法测定水中低浓度氨氮的预处理方法的改进
李红亮，赵辉，许晓翠，朱泽军
河南省环境监测中心，河南郑州 450004

摘要:

选用纳氏试剂分光光度法测定氨氮时，比较蒸馏法中分别以硼酸和纯水为吸收液时氨氮的检测效果。结果显示，当氨氮质量浓度＞1.0 mg/L时，用纯水或硼酸作吸收液均可；当氨氮质量浓度＜1.0 mg/L时，应以纯水为吸收液。

关键词: 氨氮纳氏试剂分光光度法蒸馏法吸收液

DOI：

分类号:O657.32

文献标识码:B

基金项目:

Improvement on Pretreatment for the Determination of Low concentration Ammonium Nitrogen in Water Using Nessler Reagent Method

LI Hongliang， ZHAO Hui， XU Xiaocui， ZHU Zejun

Henan Province Environmental Monitoring Center， Zhengzhou， Henan 450004， China

Abstract:

Comparison was made between using boric acid and pure water as the absorption solution during distillation using the Nessler reagent spectrophotometric method for determining the concentration of ammonium nitrogen in water. The results showed that when the concentration of ammonium nitrogen was higher than 1.0 mg/L， either boric acid or pure water could be used as the absorption solution. When the concentration was less than 1.0 mg/L， pure water was a better choice.

Key words: Ammonium nitrogen Nessler reagent spectrophotometry Distillation Absorption solution