摘要
目的:建立顶空毛细管气相色谱法,测定异丙托溴铵中甲醇、丙酮、异丙醇、二氯甲烷、乙酸乙酯、三氯甲烷、甲苯等7种有机溶剂残留量。方法:色谱柱:DM-624(聚乙二醇PEG-20M)毛细管柱(30.0m×O.53mm,3.00μm);载气:氮气,流速为2.0mL·min-1;柱温:程序升温,初始温度为40℃,保持5min然后以6℃·min-1升温到150℃,再以50℃·min-1升温到230℃,保持3min;检测器:氢火焰离子化检测器,温度为250℃;进样口温度:240℃;顶空进样量:1.0mL。结果:甲醇、丙酮、异丙醇、二氯甲烷、乙酸乙酯、三氯甲烷和甲苯分别在15.02-900.92mg·L-1(r=0.9999)、21.03—1262.00mg·L-1(r=0.9999)、21.30-1278.16mg·L-1(r=0.9999)、7.80-468.25mg·L-1(r=0.9998)、22.22-1332.97mg·L-1(r=0.9999)、0.31-18.79mg·L-1(r=0.9992)和3.48-209.02mg·L-1(r=0.9998)范围内线性关系良好.平均回收率分别为98.1%(RSD=0.19%)、100.1%(RSD=1.08%)、101.4%(RSD=1.03%)、98.1%(RSD=0.40%)、98.1%(RSD=1.55%)、98.9%(RSD=3.08%)和101.8%(RSD=2.12%)。结论:该方法简便、灵敏、重复性好,结果准确,适用于异丙托溴铵中残留有机溶剂的检测。
Objective: To establish a headspace capillary gas chromatography method for the determination of seven organic solvent residues including methanol, acetone, isopropanol, methylene dichloride, ethyl acetate, chlorotbrm and toluene, in ipratropimn bromide.Methods: A DM- 624(polyethylene glycol PEG-20M) capillary column (30.0m x 0.53mm, 3.00gm) was used witb nitrogen as carrier gas at a tlow rate of 2.0 mL · min-1, a hydrogen flame ionization detector (FID) at a temperature of 250 ℃ , an inlet temperature of 240℃ and a headspace sampling volume of 1.0 mL. The column oven was temperature-programmed as follows: the initial temperature was 40℃ tbr 5 min and then the temperature increased to 150℃, at 6℃ · min-1 and to 230℃ at 50℃ · min-1 for 3 min. Results : The linear ranges of the seven solvents were 15.02-900.92 mg ·L-1 (r=-0.999 9) for methanol, 21.03-1 262.00 mg ·L-1 (r=0.999 9) for acetone, 21.30-1 278.16 mg ·L-1 (r=0.999 9) tbr isopropanol, 7.80-468.25 mg·L-1 (r=0.999 8) tbr methylene dichloride, 22.22-1 332.97 mg·L-1 (r=-0.999 9) tbr ethyl acetate, 0.31-18.79 mg ·L-1 (r=-0.999 2) for chlorotbrm and 3.48-209.02 mg·L-1 (r=-0.999 8) for toluene, respectively. Their average recoveries were 98.1% (RSD=0.19%) for methanol, 100.1% (RSD= 1.08%) for acetone, 101.4% (RSD=1.03%) tbr isopropanol, 98.1% (RSD=0.40%) for methylene dichloride, 98.1% (RSD=1.55%) for ethyl acetate, 98.9% (RSD=3.08%) for chlorotbrm and 101.8% (RSD=2.12%) tbr toluene, respectively. Conclusion : The method is simple, sensitive, reproducible and accurate. It is suitable tbr the determination of residual organic solvents in ipratropium bromide.
出处
《药学进展》
CAS
2014年第2期146-149,共4页
Progress in Pharmaceutical Sciences
关键词
顶空毛细管气相色谱法
异丙托溴铵
残留有机溶剂
headspace capillary gas chromatography
ipratropium bromide
residual organic solvent