Determination of Resorcinol in Compound Resorcinol Lotion by Dual Wavelength Spectrophotometry / 中国药房

ABSTRACT

OBJECTIVE:The content of resorcinol in compound resorcinol lotion was determined by dual wavelength spec?trophotometry.METHODS:Absorbance was determined by using water as the solvent at the wavelength273.5nm and266.1nm.RESULTS:The results showed that the standard curve of resorcinol concentration ranging from20.32?g/ml to60.96?g/ml was in correspondence with Beer’s law.The absorbance difference and the concentration showed a good linear relationship(r=0.9998).The mean recovery of resorcinol was(99.59?0.45)%(n=9).CONCLUSION:This method is simple,quick and ac?curate.