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中国药物评价 ›› 2022, Vol. 39 ›› Issue (2): 119-121.

• 评价技术与方法 • 上一篇    下一篇

残留溶剂测定影响因素的考察——药品的溶解性

江志钦,崇小萌#,田冶*,刘颖*   

  1. 中国食品药品检定研究院,北京 102629
  • 收稿日期:2021-11-19 修回日期:2022-01-19 出版日期:2022-04-28 发布日期:2022-04-28

Investigation on the Factors Affecting the Determination of Residual Solvents—Solubility of Pharmaceuticals

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  1. National Institutes for Food and Drug Control, Beijing 102629, China
  • Received:2021-11-19 Revised:2022-01-19 Online:2022-04-28 Published:2022-04-28
  • Contact: Ying Liu E-mail:liuyingly77@ hotmail.com

摘要:

目的:考察采用顶空气相色谱法测定药品中的残留溶剂时,样品的溶解性对残留溶剂定量测定结果的影响。方法:选择头孢克肟、盐酸伊达比星和比阿培南为研究对象,分别采用水和有机溶剂(N,N-二甲基甲酰胺和二甲基亚砜)作为溶解样品的溶剂,对其残留溶剂进行定量测定。结果:头孢克肟不溶于水,以水为溶剂时,测得头孢克肟中残留溶剂丙酮含量为0.04%,而使用N,N-二甲基甲酰胺作溶剂时,测得丙酮含量为0.24%。盐酸伊达比星微溶于水,使用水作溶剂测得盐酸伊达比星中乙醇含量为0.09%,丙酮含量为0.07%,而使用二甲基亚砜作溶剂测得乙醇含量为0.20%,丙酮含量为0.18%。比阿培南微溶于水,使用水作溶剂使其部分溶解时,测得的乙醇含量为0.07%,完全溶解时,测得的乙醇含量为0.18%。 结论:采用顶空气相色谱对药品中的残留溶剂进行测定时,样品是否全部溶解对残留溶剂定量测定结果有显著影响,如果样品没有全部溶解,残留溶剂测定结果明显低于样品全部溶解的测定结果,提示在采用顶空气相色谱对药品中的残留溶剂进行测定时,选择的溶剂应当能够将待测样品全部溶解,以得到准确的定量测定结果。


关键词: 顶空气相色谱法, 残留溶剂, 定量, 影响因素, 溶解性

Abstract:

Objective:To investigate the influence of sample solubility on the determination of residual solvent in pharmaceuticals by headspace gas chromatography. Methods: Cefixime ,idarubicin hydrochloride and biapenem were selected as the research objects, water and organic solvents (N,N-dimethylformamide and dimethyl sulfoxide) were used as the solvents to dissolve the samples, and then residual solvents were determined. Results: Cefixime was insoluble in water. When water was used as the solvent, the amount of acetone in cefixime was measured as 0.04%, while it was 0.24% when DMF was used as the solvent. Idarubicin hydrochloride was slightly soluble in water. Using water as the solvent, the amount of ethanol in idarubicin hydrochloride was 0.09% and the acetone was 0.07%, while the ethanol was 0.20% and the acetone was 0.18% using DMSO as the solvent.  Biapenem was slightly soluble in water. The amount of ethanol in biapenem was 0.07% and 0.18%, under partially dissolved and completely dissolved conditions respectively. Conclusion: When using headspace gas chromatography to determine the residual solvents in pharmaceuticals, whether the sample was completely dissolved has a significant impact on the quantitative determination of the residual solvent. If the sample was not completely dissolved, the result of the residual solvent determination would be significantly lower than the determination result of the complete dissolution of the sample, It was indicatedthat the solvents should be able to dissolve the pharmaceuticals when using headspace gas chromatography to determine the residual solcents.


Key words: Headspace gas chromatography, Residual solvent, Quantification, Influencing factors, Solubility

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