ABSTRACT:Objective To establish a determination methods of sulfate in salt by ion chromatography. MethodsThe modified gradient procedure was used to separate the sulfate standard on an anion exchange column by using silver column and nano-column as solid phase extraction column, and automatic analysis method of sulfate in salt was established. ResultsUnder optimal experimental condition, the linear range of the sulfate was 0~100 mg/L. Standard addition recovery was 97.89~100.50%, the sulfate of salt RSD value was 0.57%.Conclusion The method base on ICS3000 ion chromatography could exclude chlo...