水质总氮在线分析仪器研究与应用现状

Research and application of instruments for on-line monitoring water quality of total nitrogen

水体中氮过量是造成水体富营养化的重要原因,监测并控制水体中总氮浓度是保证水环境安全的关键。水体中总氮含量包括亚硝酸盐氮、硝酸盐氮、无机铵盐、溶解态氨及大部分有机含氮化合物中的氮。根据生态环境部相关要求,水质总氮在线分析仪已广泛应用于我国地表水自动监测和污染源在线监控系统中。本文综述了水质总氮在线自动监测仪器现状及未来发展,介绍了水质总氮自动在线监测仪器基本原理,水样处理及消解方法,分析对比了自动在线监测仪器技术指标,并根据我国水环境监测治理发展方向,展望了未来水质总氮自动在线监测技术及仪器发展方向,为相关仪器开发及产业化提供参考。

The nitrogen may cause eutrophication in water bodies. Monitoring and controlling the concentration of total nitrogen in water bodies is the key to ensuring the safety of the water environment. The total nitrogen content in the water body includes nitrogen in nitrite nitrogen, nitrate nitrogen, inorganic ammonium salt, dissolved ammonia and most organic nitrogen compounds. According to environmental protection requirements, total nitrogen online analyzer has been widely used in surface water and pollution source on-line monitoring. This paper summarizes the current status and future development of total nitrogen online automatic monitoring equipment, introduces the basic principles of total nitrogen detection, water sample treatment and digestion methods, analyzes and compares the technical indicators of water quality total nitrogen automatic online monitoring equipment. According to china′s water environment governance development, the total nitrogen automatic online monitoring technology and instrument should be development. This paper provides reference for the development and industrialization of related instruments.