Objective:To apply an ICS method to simultaneously determine of oxalate and citric acid residues in urine and plasm.Methods:The method was based on ICS separation under the condition of isocratic eluent with 0~50 mmol/L KOH and flow rate of 1.0 ml/min by using of the IonPAC AS18 analytical column and suppressed conductivity detector.Results:It was showed that this method has good relativity(r>0.9994) and good analytic precision(RSD%<5.0).The samples′average recoveries rates were 87.8%~101% and the detection...