A sensitive analytical method for the simultaneous determination of micro o-amino-benzene sulfonic acid,m-amino-benzene sulfonic acid and aniline as micro impurities in p-amino-benzene sulfonic acid by high performance liquid chromatography was described.
用反相高效液相色谱法同时测定工业对氨基苯磺酸中的几种微量杂质 (邻氨基苯磺酸、间氨基苯磺酸、苯胺 ) 。