Nitrite nitrogen refers to the intermediate product of nitrate formed in the oxidation process of nitrogen-containing organic matter in water.As one of the important indicators to evaluate the level of groundwater pollution,the detection of nitrite nitrogen often uses spectrophotometry,ion chromatography and continuous flow analysis.In this paper,these three methods are used to detect national standard materials and various groundwater samples,and their basic requirements and results are compared and analyzed.In addition,the trend of the data was statistically analyzed by t test and F test.
关键词
分光光度法/离子色谱法/连续流动分析法/t检验/F检验
Key words
Spectrophotometry/ion chromatography/continuous flow analysis/t test/F test
维普
万方数据