顶空气相色谱法同时测定甲苯磺酸妥舒沙星原料药中6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甲苯磺酸妥舒沙星原料药中6种有机溶剂的残留量
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摘要: 目的:建立同时测定甲苯磺酸妥舒沙星原料药中甲醇、乙醇、二氯甲烷、正己烷、四氢呋喃和苯等有机溶剂残留量的方法。方法:采用顶空气相色谱法。色谱柱为以6%氰丙基苯基-94%二甲基聚硅氧烷(DB-624)为固定液的毛细管柱,程序升温,进样口温度为180 ℃,检测器为氢火焰离子化检测器,温度为300 ℃,载气为高纯氮气,载气流速为1.5 mL/min,分流比为10 ∶ 1,顶空平衡温度为100 ℃,平衡时间为40 min,顶空瓶装样量为10 mL,顶空进样量为1 mL。结果:甲醇、乙醇、二氯甲烷、正己烷、四氢呋喃和苯检测质量浓度线性范围分别为178.3~1 782.7 μg/mL(r=0.999 1)、301.2~3 012.1 μg/mL(r=0.999 7)、33.81~338.10 μg/mL(r=0.999 3)、18.02~180.22 μg/mL(r=0.999 1)、43.26~432.58 μg/mL(r=0.999 1)、0.126 8~1.268 1 μg/mL(r=0.999 1);定量限分别为0.31、3.00、0.67、0.02、0.005、0.10 μg/mL ,检测限分别为0.15、1.51、0.22、0.01、0.001、0.05 μg/mL;精密度试验的RSD≤3.1%;稳定性、重复性试验中甲醇、正己烷的RSD≤5%;加样回收率分别为93.72%~102.20%(RSD=3.1%,n=9)、90.10%~101.79%(RSD=4.0%,n=9)、97.07%~103.11%(RSD=2.0%,n=9)、92.38%~103.83%(RSD=3.9%,n=9)、95.44%~103.62%(RSD=2.8%,n=9)、94.00%~104.73%(RSD=4.1%,n=9)。结论:该方法快速、灵敏、准确,适用于甲苯磺酸妥舒沙星原料药中甲醇、乙醇、二氯甲烷、正己烷、四氢呋喃和苯等有机溶剂残留量的同时测定。
ABSTRACT: OBJECTIVE: To establish a method for the residual simultaneous determination of methanol, alcohol, dichloromethane, n-hexane, tetrahydrofuran and benzene in tosufloxacin tosylat. METHODS: Headspace GC was performed on the capillary column with 6% cyanopropylphenyl-94% dimethylpolysiloxane (DB-624) as fixative lipid, temperature programmed, the inlet temperature was 180 ℃, detector was flame ionization detector with temperature of 300 ℃, carrier gas was high purity N2 at a flow rate of 1.5 mL/min, split ratio was 10 ∶ 1, headspace equilibrium temperature was 100 ℃, equilibrium time was 40 min, headspace sample volume was 10 mL, and the headspace sample volume was 1 mL. RESULTS: The linear range was 178.3-1 782.7 μg/mL for methanol (r=0.999 1),301.2-3 012.1 μg/mL for alcohol(r=0.999 7),33.81-338.10 μg/mL for dichloromethane(r=0.999 3),18.02-180.22 μg/mL for n-hexane (r=0.999 1), 43.26-432.58 μg/mL for tetrahydrofuran (r=0.999 1) and 0.126 8-1.268 1 μg/mL for benzene (r=0.999 1); limits of quantification were 0.31, 3.00, 0.67, 0.02, 0.005, 0.10 μg/mL, limits of detection were 0.15, 1.51, 0.22, 0.01, 0.001, 0.05 μg/mL; RSD of precision test was no higher than 3.1%; RSDs of methanol and n-hexane in stability and reproducibility tests were no higher than 5%; recoveries were 93.72%-102.20%(RSD=3.1%,n=9), 90.10%-101.79% (RSD=4.0%,n=9),97.07%-103.11%(RSD=2.0%,n=9),92.38%-103.83%(RSD=3.9%,n=9),95.44%-103.62%(RSD=2.8%,n=9),and 94.00%-104.73%(RSD=4.1%,n=9). CONCLUSIONS: The method is rapid,sensitive,accurate,and suitable for the residual determination of methanol, alcohol, dichloromethane, n-hexane, tetrahydrofuran and benzene in tosufloxacin tosylat.
期刊: 2017年第28卷第6期
作者: 章为,李文波,李晓燕,王伟姣,谭桂山
AUTHORS: ZHANG Wei,LI Wenbo,LI Xiaoyan,WANG Weijiao,TAN Guishan
关键字: 甲苯磺酸妥舒沙星原料药;气相色谱法;顶空进样;有机溶剂;残留量
KEYWORDS: Tosufloxacin tosylate; Gas chromatography; Headspace sampling; Organic solvent; Residual
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