摘要
目的:建立以顶空气相色谱法同时测定美罗培南中有机溶剂甲醇、乙醇、丙酮、乙腈、二氯甲烷、正丁醇残留量的方法。方法:色谱柱为DB-624石英毛细管柱,柱温采用程序升温,检测器为氢火焰离子化检测器,检测器温度为250℃,进样口温度为200℃,载气为氮气,水为溶剂。结果:甲醇、乙醇、丙酮、乙腈、二氯甲烷、正丁醇的检测浓度的线性范围分别为12~600(r=0.9998)、20~1000(r=0.9999)、20~1000(r=0.9999)、1.64~82(r=0.9998)、2.4~120(r=0.9996)、20~1000μg·mL-(1r=0.9999);平均回收率为98.8%~99.6%;RSD分别为1.0%、2.2%、0.9%、2.2%、1.6%、1.1%;最低检出限为0.06~0.43ng;3批样品中6种有机溶剂残留量均符合2005年版《中国药典》中的相关规定。结论:本方法简单、准确、灵敏度高、重复性好,可用于美罗培南中有机溶剂残留量的测定。
OBJECTIVE: To develop a headspace GC method for determination of residual organic solvents invovling methanol, alcohol, acetone, acetonitrile, dichloromethane and n-butanol in meropenem. METHODS: The residual organic solvents were separated on DB-624 capillary column using temperature programming. FID was used as detector with a temperature of 250 ℃ with nitrogen as cartier gas and water as solvent. The inlet temperature was 200 ℃. RESULTS: The linear range were 12-600 μg·mL^-1 (r=0.999 8) for methanol, 20-1 000μg·mL^-1 (r=0.999 9) for alcohol, 20-1 000μg·mL^-1 (r=0.999 9) for acetone, 1.64-82μg·mL^-1(r=0.999 8) for acetonitrile, 2.4-120 μg·mL^-1(r=0.999 6) for dichloromethane and 20-1 000 μg·mL^-1 (r= 0.999 9) for n-butanol with RSD of 1.0%, 2.2%, 0.9%, 2.2%, 1.6%, 1.1%, respectively. The average recoveries were ranged from 98.8% to 99.6%. The LOD were about 0.06-0.43 ng. The residual levels of six organic solvents in 3 batches samples were all up to the standard stated in Chinese Pharmacopeia (2005 edition). CONCLUSION: The method is simple, accurate, sensitive and reproducible for determination of residual organic solvents in meropenem.
出处
《中国药房》
CAS
CSCD
北大核心
2010年第5期447-448,共2页
China Pharmacy