Total nitrogen, as a fundamental indicator for water quality monitoring, is an important indicator for measuring the degree of water pollution, self purification status, and eutrophication. It is of great significance for evaluating water quality and protecting the ecological environment. This article explores the main factors affecting the detection process of total nitrogen in water using ultraviolet digestion spectrophotometry. By optimizing the detection process through methods such as sample self influencing factors, digestion process control, and reagent and drug purification, the problem of high experimental blank has been effectively solved, and the reliability and accuracy of the detection have been improved.

water  /  total nitrogen  /  UV visible spectrophotometry  /  potassium persulfate purity