头孢泊肟酯中有机溶剂残留的测定方法
2017-09-22张清国周芳郭树兴
张清国 周芳 郭树兴
[摘要] 目的 建立适合头孢泊肟酯中有机残留溶剂的测定方法。 方法 采用Agilent DB-624毛细管柱(30.0 m×0.25 mm×1.4 μm),顶空气相色谱法,FID检测器,运用外标法、内标法、标准加入法和加校正因子的标准加入法测定分析头孢泊肟酯中乙醛、甲醇、乙醇、异丙醇、二氯甲烷、异丙醚、丁酮、乙酸乙酯、四氢呋喃、环己烷、吡啶、甲苯和乙酸正丁酯的残留量。 结果 有效分离上述各有机溶剂,在考察的浓度范围内各方法的结果线性均良好,r值在0.9980~1.0000之间;各残留溶剂的检出限在0.0250~0.3284 μg/mL之间。残留溶剂间回收率差异显著,乙醛回收率最低,为39.7644%~42.1885%,环己烷回收率最高,为125.3627%~132.2517%。 结论 标准加入法分析适用于头孢泊肟酯有机溶剂残留的测定。
[关键词] 头孢泊肟酯;残留溶剂;乙醛;丁酮;乙酸乙酯;气相色谱法
[中图分类号] R961 [文献标识码] A [文章编号] 1673-7210(2017)08(a)-0037-05
[Abstract] Objective To establish a suitable method for determination of residual solvents in Cefpodoxime Proxetil. Methods Agilent DB-624 capillary column (30.0 m×0.25 mm×1.4 μm) was used, with FID detector, thirteen residual solvents (acetaldehyde, methanol, ethanol, isopropanol, dichloromethane, isopropyl ether, butanone, ethylacetate, tetrahydrofuran, cyclohexane, pyridine, toluene, butyl acetate) in Cefpodoxime Proxetil were determinated and analyzed by external standard method, internal standard method, standard addition method and correction factor standard addition method. Results The results showed that all residual solvents could be separated, and good linear relationships were obtained in their respective concentration ranges in the methods (r = 0.9980-1.0000), the detection limits were between 0.0250 to 0.3284 μg/mL. And significant differences recovery rates between all kinds of residual solvents, with the lowest recovery rates in acetaldehyde (39.7644%-42.1885%) and with the highest recovery rates in cyclohexane (125.3627%-132.2517%). Conclusion The standard addition method is the most suitable determination method for the residual solvents in Cefpodoxime Proxetil.
[Key words] Cefpodoxime Proxetil; Residual solvent; Acetaldehyde; Butanone; Ethylacetate; Gas chromatography
头孢泊肟酯是第三代头孢菌素,临床中具有很好的抗菌效果,需求量大[1-2]。其合成过程常需使用乙醛、甲醇等多种有机溶剂[3-4]。秦立等[5]采用DB-624毛细管柱(30.0 m×0.53 mm×3.0 μm)顶空气相色谱法建立了8种有机溶剂的检测方法。《中国药典》2010版开始收录头孢泊肟酯[6-7],录入有关残留溶剂18种。对福建古田药业有限公司(以下简称“我司”)最近5年的头孢泊肟酯检验结果进行统计分析,结果显示,所有批次均检出乙醛和甲醇,部分批次中检出异丙醚等。目前,《中国药典》2015版中头孢泊肟酯残留溶剂项下并未收录乙醛和异丙醚[7],文献中较多同时检测甲醇、乙醇、丙酮、吡啶等多种物质的研究[8-12],尚未见同时检测药物中乙醛、甲醇、丁酮和乙酸乙酯的报道,因此,探索有效分离乙醛和甲醇的同时并测定头孢泊肟酯中有机溶剂残留是对其检验标准的进一步完善探讨以及对其检测结果有效性和可靠性的必要提升。……
