【摘要】 目的:建立HPLC-ELSD法测定大豆磷脂注射液中有关物质溶血性磷脂酰胆碱的含量。方法:采用C18色谱柱(250mm×4.6mm,5μm),以甲醇-冰醋酸(500∶10,用三乙胺调pH至6.2)为流动相,柱温为室温,流速为1.0mL/min,进样量为10μL;蒸发光散射检测器参数:载气为空气,载气压力为250kPa,载气流量为2.0L/min,漂移管温度为60℃。结果:大豆磷脂注射液中主成分磷脂酰胆碱和溶血性磷脂酰胆碱能很好地分离检出,其线性浓度范围分别为20.4~801.6(r=0.9995)和10.652~532.6(r=0.9994)mg/L,溶血性磷脂酰胆碱的最低检测限为5.326ng。辅料对检测无干扰。结论:该方法准确、灵敏、快捷,适用于大豆磷脂注射液中有关物质的测定。更多还原

【Abstract】 Objective: To establish a HPLC-ELSD method for the determination of related substances(lysophosphatidylcholine,LPC)in soybean phosphatidylcholine injection. Methods: A C18 column(250 mm×4.6 mm, 5 μm)and the mobile phase of methanol-glacial acetic acid (500∶10, adjusted to pH 6.2 with triethylamine) were used at room temperature with a flow rate of 1.0 mL/min and a injection volume of 10 μL. ELSD para-meters: air as carrier gas, carrier gas pressure of 250 kPa, carrier gas flow rate of 2.0 L/min, and drift tube temperature of 60 ℃. Results: Main component PC and LPC in the injection could be well separated and detected. The linear concentration ranges of PC and LPC were 20.4-801.6 (r=0.999 5) and 10.652-532.6(r=0.999 4)mg/L respectively. The minimal detection limit of LPC was 5.326 ng. There was no influence of excipients on the determination.Conclusion: The method is accurate, sensitive, rapid and suitable for the determination of related substances in soybean phosphatidylcholine injection.更多还原