Simultaneous Spectrophotometric Determination of Three Components in Satongfeng Injection by Flexible Tolerance Simplex Method / 中国药房

OBJECTIVE:To establish a method for simultaneous determination of the contents of three components in synthesis and actual satongfeng injection.METHODS:A flexible tolerance simplex method was used for multi-wavelength spectrophotometry with interval of 1nm in 258～290nm wavelenth,33 wavelenths were selected.RESULTS:The linear range and average recoveries rate of sodium salicylate,phenazone and caffeine were 0～42,0～12,0～6?g?mL-1 and(99.93?0.22)%,(99.85?0.24)% and(100.19?0.40)% respectively.All were agreed with those by standard method.CONCLUSIONS:This method is easy in operation,fast and reproducible,applicable to automatic analysis,and therefore can be used for the quality control of the preparation.