Determination of Sodium Benzoate in Compound Platycodon grandiflorum Antitussive Tablets
(Objective)To establish a HPLC method for the determination of Sodium benzoate in Compound Platycodon grandiflorum Antitussive Tablets.(Methods)The determination was performed on an Agilent Eclipse XDB-C18(4.6×250 mm,5 μm)with the mobile phase consisted of methanol-0.02 mol/L ammonium acetate(5∶95),the flow rate is1.0 mL/min,the detection wavelength was set at 230 nm.(Results)Good line-arity was shown in the range of 0.127~2.540 μg for Sodium benzoate with the average recovery of 100.31%,RSD=0.92%(n=6).(Conclu-sion)The method is simple,rapid,accurate,reproducible and specificity,it can be used for the determination of Sodium benzoate in Compound Platycodon grandiflorum Antitussive Tablets.