HPLC法同时测定三味龙胆花片中马钱苷酸和异金雀花素的含量
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篇名: HPLC法同时测定三味龙胆花片中马钱苷酸和异金雀花素的含量
TITLE:
摘要: 目的:建立同时测定三味龙胆花片中马钱苷酸、异金雀花素含量的方法。方法:采用高效液相色谱法。色谱柱为Inertsil ODS-3,流动相为甲醇-0.2%磷酸溶液(梯度洗脱),流速为1.0 mL/min,检测波长为240 nm,柱温为30 ℃,进样量为10 μL。结果:马钱苷酸和异金雀花素进样量线性范围分别为0.040 08~4.008 0 μg(r=0.999 9)、0.021 96~2.196 0 μg(r=0.999 9);定量限分别为0.160 32、0.087 8 ng/mL,检测限分别为0.080 16、0.043 92 ng/mL;精密度、稳定性、重复性试验的RSD均小于2%;加样回收率分别为103.07%~104.26%(RSD=0.52%,n=6)、95.57%~99.61%(RSD=1.55%,n=6)。结论:该方法简便、精确,可用于同时测定三味龙胆花片中马钱苷酸和异金雀花素的含量。
ABSTRACT: OBJECTIVE: To establish a method for the simultaneous determination of loganic acid and isoscoparin in Sanwei longdanhua tablets. METHODS: HPLC method was adopted. The determination was performed on Inertsil ODS-3 column with mobile phase consisted of methanol-0.2% phosphoric acid (gradient elution) at the flow rate of 1.0 mL/min. The detection wavelength was set at 240 nm, and column temperature was 30 ℃. The sample size was 10 μL. RESULTS: The linear range were 0.040 08-4.008 0 μg (r=0.999 9) for loganic acid and 0.021 96-2.196 0 μg (r=0.999 9) for isoscoparin. The quantitative limits were 0.160 32 and 0.087 8 ng/mL, and detection limits were 0.080 16 and 0.043 92 ng/mL. RSDs of precision, stability and reproducibility tests were all lower than 2%. The recoveries were 103.07%-104.26%(RSD=0.52%,n=6) and 95.57%-99.61%(RSD=1.55%,n=6). CONCLUSIONS: The method is simple, accurate and suitable for simultaneous determination of loganic acid and isoscoparin in Sanwei longdanhua tablets.
期刊: 2018年第29卷第20期
作者: 艾悦言,赵学勇,付林,卞晓莲,古锐,张静波,南措,西绕娜姆
AUTHORS: AI Yueyan,ZHAO Xueyong,FU Lin,BIAN Xiaolian,GU Rui,ZHANG Jingbo,Nancuo,Xiraonamu
关键字: 高效液相色谱法;三味龙胆花片;马钱苷酸;异金雀花素;含量测定
KEYWORDS: HPLC; Sanwei longdanhua tablets; Loganic acid; Isoscoparin; Content determination
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