氨氮的测定,较广泛应用的是次氯酸钠作氧化剂重氮-偶氮光度法。由于次氯酸钠不稳定且氧化率较低,有人提出用次溴酸钠作氧化剂。近几年,发表了多篇流动注射分析(FIA)方法,但由于受灵敏度或仪器条件所限,难于普及使用。合并带法(MergingZones)具有试剂用量少等特点。Gine等采用合并带技术重氮-偶氮光度法FIA连续测定亚硝酸氮和硝酸氮。本文用次溴酸钠作氧化剂结合合并带技术,连续测定天然水中痕量亚 Ammonia determination, the more widely used is sodium hypochlorite oxidant diazo - azo photometric method. As sodium hypochlorite is unstable and the oxidation rate is low, it has been proposed to use sodium hypobromite as the oxidizer. In recent years, many flow injection analysis (FIA) methods have been published, but due to sensitivity or instrument limitations, it is difficult to be used universally. MergingZones (MergingZones) with less reagent and other characteristics. Gine and other combined with the use of technology diazo - azo spectrophotometric FIA continuous determination of nitrite and nitrate. In this paper, sodium hypochlorite as oxidant combined with the technology, continuous determination of trace amounts of natural water