Determination of Seven Kinds of Anions in Drinking Water by Ion Chromatography and Conductivity Detector

A new method was established for simultaneous determination of seven kinds of anions in drinking water by ion chromatography including F-,Cl-,NO-2,SO2-4,Br-,NO-3 and PO3-4.The Ion chromatography was applied to analysis.Dionex IonPac AS11-HC was selected as the separation column with Dionex IonPac AG11-HC guard column,ASRS300-4mm Anion suppressor and RFIC Reagents controller were used,the solution of 30.0mmol/L KOH was eluent and Conductivity detector was choose.This method has broad linearity range,low detection limit,good analytic accuracy and precision.The average recoveries rates were from 97.6% to 103.4%.This method is efficient,rapid,sensitive and accurate.And reagents are nontoxic and harmless.It can satisfy the testing requirements of the national drinking water health standards.