Simultaneous Determination of 7 Components in Kangjun Xiaoyan Tablets by RP-HPLC / 中国药房

ABSTRACT

OBJECTIVE:To develop a method for simultaneous determination of chlorogenic acid,baicalin,aloe emodin,rhe-in,emodin,chrysophanol and physcione in Kangjun xiaoyan tablets. METHODS:RP-HPLC method was adopted. The determina-tion was performed on Agilent Extend C18 with mobile phase consisted of acetonitrile-0.5% phosohoric acid solution(gradient elu-tion)at the flow rate of 1.0 mL/min. The detection wavelengths were set at 327 nm(chlorogenic acid),280 nm(baicalin)and 450 nm(aloe emodin,rhein,emodin,chrysophanol,physcione). The column temperature was 30℃,and sample size was 10μL. RE-SULTSThe linear ranges of chlorogenic acid,baicalin,aloe emodin,rhein,emodin,chrysophanol and physcione were 0.2094-4.1880μg(r=0.9999),0.3720-7.4400 μg(r=0.9999),0.0063-0.1262 μg(r=0.9999),0.0116-0.2322 μg(r=0.9999),0.0053-0.1060 μg(r=0.9998),0.0128-0.2564 μg(r=0.9999),0.0165-0.3303 μg(r=0.9998),respectively. The limits of quantita-tion were 2.01,1.93,0.76,1.25,1.24,0.53 and 1.53 ng;the limits of detection were 0.98,0.65,0.25,0.42,0.41,0.18 and 0.52 ng,respectively. The recoveries were 98.41%-100.40%(RSD=0.76%,n=9),96.17%-100.10%(RSD=1.58%,n=9), 96.11%-100.10%(RSD=1.33%,n=9),96.29%-100.80%(RSD=1.85%,n=9),96.88%-100.10%(RSD=1.22%,n=9), 97.81%-101.90%(RSD=1.64%,n=9),96.46%-101.30%(RSD=1.85%,n=9),respectively. CONCLUSIONS:The method is accurate,reliable and reproducible. It can be used for simultaneous determination of 7 components in Kangjun xiaoyan tablets.