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高效液相色谱法测定青霉素G的方法改进
引用本文:吕元元,任钟旗,张卫东,李群生.高效液相色谱法测定青霉素G的方法改进[J].中国药业,2008,17(13):18-19.
作者姓名:吕元元  任钟旗  张卫东  李群生
作者单位:北京化工大学·化工资源有效利用国家重点实验室,北京100029
基金项目:国家自然科学基金 , 国家科技支撑计划 , 广东省绿色化学严品技术重点实验室开放基金
摘    要:目的建立适用于测定溶剂萃取过程中水溶液的青霉素G浓度的高效液相色谱法。方法采用日本岛津LC-20A高效液相色谱仪,色谱柱为C18柱(250mm×4.6mm,5μm),流动相为0.2mol/L磷酸二氢钾(pH=3.5)-甲醇溶液(38:62),流速为1.0mL/min,检测波长为225nm。结果青霉素G钠进样量在0.05~1.0mg/mL范围内与峰面积线性关系良好(r=0.9999),平均加样回收率为99.58%,RSD=0.88%(n=6)。结论该流动相条件下青霉素G保留时间短,色谱峰峰形尖锐,重现性好,不受缓冲盐和有机溶剂的干扰,可用于测定萃取过程中水溶液的青霉素G含量.

关 键 词:高效液相色谱法  青霉素G  含量测定  萃取  有机溶剂  缓冲溶液

Improvement of HPLC Method for Determination of Penicillin G
Lü Yuanyuan,Ren Zhongqi,Zhang Weidong,Li Qunsheng.Improvement of HPLC Method for Determination of Penicillin G[J].China Pharmaceuticals,2008,17(13):18-19.
Authors:Lü Yuanyuan  Ren Zhongqi  Zhang Weidong  Li Qunsheng
Institution:(State Key Laboratoo of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China 100029)
Abstract:Objective To establish a method for the determination of penicillin G by HPLC in its solvent extraction process. Methods The Shimadzu LC - 20A HPLC with VP - ODS column (250 mm × 4. 6 mm,5 μm) was used,0. 2 mol/L KH2PO4 (pH = 3.5) - methanol (38 : 62) as the mobile phase. The flow rate was 1.0 mL/min,and the detection wavelength was 225 nm. Results The calibration curve of penicillin G was linear in the range of 0.05- 1.0 mg/mL (r=0.999 9),the average recovery rate was 99.58% ,and RSD was 0. 88% (n =6). Conclusion The method is rapid, accurate and reliable without the interference of the buffer and organic solvents. It can be used for the content determination of penicillin G in solvent extraction process.
Keywords:HPLC  penicillin G  determination  organic slovent  extraction  buffer
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