目的:建立当药高效液相色谱(HPLC)特征图谱的质量评价方法。方法:采用Waters 2695-2996型高效液相色谱仪,Dionex Ultimate 3000型高效液相色谱仪,Agilent^(-1)260型高效液相色谱仪;资生堂CAPCELL PAK C18MGⅡ色谱柱(4.6 mm×250 mm,5μm),波士顿Green ODS色谱柱(4.6 mm×250 mm,5μm),菲罗门Gemini 5μC18110A色谱柱(4.6 mm×250 mm),以甲醇-乙腈-0.05 mol·L^(-1)磷酸二氢钠溶液(0.1%磷酸溶液调节p H至3.9)(15∶5∶80)为流动相,检测波长268 nm,流速1.0 m L·min^(-1)。采用主成分相对保留时间比较分析法,对10批不同产地的当药HPLC特征图谱进行评价。结果:建立了当药的HPLC特征图谱,共标定了5个共有峰,10批当药共有峰的相对保留时间的RSD〈2.0%。结论:该研究建立的当药特征图谱特征性和专属性强,且方法快速、简便、可靠,可用于控制当药的质量。
Objective: To develop a method of HPLC fingerprinting analysis for the quality evaluation of Swertiae Herba. Method: The Waters 2695-2996, Dionex Ultimate 3000 and Agilent-1260 high performance liquid chromatograph instrument equipped with Shiseido CAPCELL PAK C18 MG Ⅱ (4.6 mm ×250 mm, 5 μm) , Boston Green ODS (4.6 mm x250 ram, 5 μm) and Phenomenex Gemini C18 110A column (4.6 mm x250 mm, 5 μm) was used. Methanol- acetonitrile-0.05 mol · L-1 sodium dihydrogen phosphate solution ( adjusted pH value to 3.9 with 0. 1% phosphoric acid solution) (15 : 5 : 80) were used as mobile phase; the wavelength was set at 268 nm, and the flow rate was 1.0 mL · min-1. The principal component relative retention time comparison method was used to evaluate the characteristic fingerprints of 10 batches of Swertiae Herba produced in different regions. Result: The chromatographic fingerprint was completed with five common peaks, and the RSD of relative retention time for the common peaks from 10 batches of Swertiae Herba was less than 2.0%. Conclusion: The method is simple, accurate and sensitive, which can be used for the quality control of Swertiae Herba.