Objective To evaluate the application value of high-performance liquid chromatography fluorescence detection method for determining nitrite in drinking water.Method Collect mineral water,tap water,and source water as water samples,and use high-performance liquid chromatography fluorescence detection method to determine.Analyze the detection advantages of this method and the stability of nitrite derivative 2,3 naphthalene triazole in the water standard.Result The nitrite concentration detected in pure water was 0.6 μg/L,with good peak shape and no impurity interference;The detection limit of high-performance liquid chromatography fluorescence detection method is 0.3 μg/L,and the quantitative limit is 1 μg/L;After derivatization with nitrite,the stability of the derivative is high,and the measurement error is small within 7 days;The recovery rate of nitrite spiking is between 90.29%-102.60%,and the precision is between 0.71%-3.66%.Conclusion The determination of nitrite in drinking water by high-performance liquid chromatography fluorescence detection method has the characteristics of accuracy and convenience,providing important technical support for drinking water safety monitoring.
drinking waternitritehigh performance liquid chromatography fluorescence detection method for determination
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