顶空气相色谱法同时测定法匹拉韦原料药中5种有机溶剂的残留量
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篇名: 顶空气相色谱法同时测定法匹拉韦原料药中5种有机溶剂的残留量
TITLE:
摘要: 目的:建立同时测定法匹拉韦原料药中乙醇、丙酮、乙酸乙酯、N,N-二异丙基乙胺、甲苯5种有机溶剂残留量的方法。方法:采用顶空气相色谱法。色谱柱为DB-624毛细管柱,程序升温,进样口温度为220 ℃,检测器为氢火焰离子化检测器,检测器温度为250 ℃,载气为氮气,载气流速为2.0 mL/min,分流比为10 ∶ 1,顶空平衡温度为80 ℃,平衡时间为20 min,顶空进样量为1 mL。结果:乙醇、丙酮、乙酸乙酯、N,N-二异丙基乙胺和甲苯检测质量浓度线性范围分别为10.0~501.4 μg/mL(r=0.999 9)、10.0~501.4 μg/mL(r=0.999 9)、10.1~502.6 μg/mL(r=0.999 9)、0.2~11.4 μg/mL(r=0.999 9)、1.8~89.4 μg/mL(r=0.999 7);定量限分别为5.3、3.4、5.2、6.1、20.4 μg/mL,检测限分别为1.4、1.1、1.3、1.6、5.9 μg/mL;精密度试验的RSD<4.0%,稳定性、重复性试验中只检出丙酮,其RSD<4.0%;加样回收率分别为96.61%~99.70%(RSD=1.01%,n=9)、95.81%~99.50%(RSD=1.29%,n=9)、 96.42%~99.76%(RSD=1.24%,n=9)、96.36%~99.30%(RSD=1.19%,n=9)、97.00%~99.51%(RSD=0.82%,n=9)。结论:该方法简单、准确、重复性好,可用于法匹拉韦原料药中5种有机溶剂残留量的同时测定。
ABSTRACT: OBJECTIVE: To establish a method for simultaneous determination of 5 kinds residual ethanol, acetone, ethylacetate, N,N-diisopropylethylamine and toluene in favipiravir. METHODS: Headspace GC was adopted. The determination was performed on DB-624 capillary column, temperature programmed. The inlet temperature was 220 ℃, and detector was flame ionization detector with temperature of 250 ℃. Nitrogen was used as carrier gas at flow rate of 2.0 mL/min, split ratio was 10 ∶ 1, headspace equilibrium temperature was 80 ℃, equilibrium time was 20 min and headspace sample size was 1 mL. RESULTS: The linear range was 10.0-501.4 μg/mL for ethanol(r=0.999 9),10.0-501.4 μg/mL for acetone(r=0.999 9),10.1-502.6 μg/mL for ethylacetate(r=0.999 9),0.2-11.4 μg/mL for N,N-diisopropylethylamine(r=0.999 9)and 1.8-89.4 μg/mL for acetone(r=0.999 7). The limits of quantification were 5.3, 3.4, 5.2, 6.1 and 20.4 μg/mL, and the limits of detection were 1.4, 1.1, 1.3, 1.6, 5.9 μg/mL. RSD of precision test was lower than 4.0%, and RSDs of acetone in stability and reproducibility tests were both lower than 4.0%. The recoveries were 96.61%-99.70%(RSD=1.01%,n=9), 95.81%-99.50%(RSD=1.29%,n=9), 96.42%-99.76%(RSD=1.24%,n=9), 96.36%-99.30%(RSD=1.19%,n=9), 97.00%-99.51%(RSD=0.82%,n=9). CONCLUSIONS: The method is simple, accurate, reproducible and can be used for simultaneous determination of 5 organic solvents in favipiravir.
期刊: 2017年第28卷第24期
作者: 刘葵葵,邓玉晓,邢学敏,王伶
AUTHORS: LIU Kuikui,DENG Yuxiao,XING Xuemin,WANG Ling
关键字: 气相色谱法;法匹拉韦;有机溶剂;残留量;乙醇;丙酮;乙酸乙酯;N,N-二异丙基乙胺;甲苯
KEYWORDS: Gas chromatography; Favipiravir; Organic solvents; Residual; Ethanol; Acetone; Ethylacetate; N,N-diisopropylethylamine; Toluene
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