HS-GC法同时测定尼莫地平缓释片中乙醇和丙酮的残留量
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篇名: HS-GC法同时测定尼莫地平缓释片中乙醇和丙酮的残留量
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摘要: 目的:建立同时测定尼莫地平缓释片中乙醇和丙酮残留量的方法。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230 ℃,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,流速为2.0 ml/min,分流比为5 ∶ 1,顶空加热温度为90 ℃,平衡时间为20 min,顶空进样量为1.0 ml。结果:乙醇、丙酮检测质量浓度线性范围分别为1.25~500.0 μg/ml(r=0.999 9)、0.50~202.0 μg/ml(r=0.999 2);定量限分别为5.01、2.02 μg/ml,检测限分别为1.67、0.67 μg/ml;精密度、稳定性、重复性试验的RSD<3.0%;加样回收率分别为96.81%~102.00%(RSD=1.89%,n=9)、96.64%~102.31%(RSD=1.82%,n=9)。结论:该方法简便、快速、准确,可用于同时测定尼莫地平缓释片中乙醇和丙酮的残留量。
ABSTRACT: OBJECTIVE: To establish a method for the residual determination of ethanol and acetone in Nimodipine sustained-release tablet. METHODS: Headspace GC was on the column of capillary column with fixative solution of 6% cyanopropyl phenyl-94% dimethyl polysiloxane (DB-624) by temperature programming, injector temperature was 230 ℃, detector was a flame ionization detector, detector temperature was 250 ℃, carrier gas was nitrogen gas, flow rate was 2.0 ml/min, split ratio was 5 ∶ 1, equilibrium temperature was 90 ℃, equilibrium time was 20 min, and volume of sample was 1.0 ml. RESULTS: The linear range was 1.25-500.0 μg/ml for ethanol (r=0.999 9) and 0.50-202.0 μg/ml for acetone (r=0.999 2); limits of quantitative were 5.01, 2.02 μg/ml, limits of detection were 1.67, 0.67 μg/ml, respectively; RSDs of precision, stability and reproducibility tests were lower than 3.0%; recoveries were 96.81%-102.00%(RSD=1.89%,n=9),96.64%-102.31%(RSD=1.82%,n=9), respectively. CONCLUSIONS: The method is simple, rapid, accurate, and can be used for simultaneous residual determination of ethanol and acetone in Nimodipine sustained-release tablet.
期刊: 2016年第27卷第33期
作者: 胡晓琴,韩春
AUTHORS: HU Xiaoqin,HAN Chun
关键字: 顶空气相色谱法;尼莫地平;乙醇;丙酮;有机溶剂;残留量
KEYWORDS: HS-GC; Nimodipine; Ethanol; Acetone; Organic solvent; Residue
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