To establish an accurate, rapid method for determination of ammonia nitrogen, nitrate and nitrite in drinking water.MethodsWater samples were filtered through 0.22μm filter membrane, and high salt water samples were cleaned up by solid phase extract. Samples were separated by a high-capacity anion/cation exchange column with potassium hydroxide and methane sulfonic acid as mobile phase, and detected by suppressed conductivity detector. ResultsThe limit of detection was 0.001-0.002mg/L. The recoveries were 89.6%-101.5%, and the RSD was 5.7%-8.0%.ConclusionThis method is simple, fast selective, and suitable for environmental water quality analysis.