药典应对|聚山梨酯60中乙二醇和二甘醇的测定
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1. 实验部分
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取乙二醇、二甘醇对照品适量,精密称定,加无水乙醇稀释配制成每1 mL含乙二醇、二甘醇各4 mg的溶液,作为对照品贮备液;精密量取对照品贮备液1.0 mL与内标溶液量瓶中,精密加入内标溶液(取1,3-丁二醇适量,用无水乙醇稀释制成每1 mL中约含4 mg的溶液)1.0 mL,置100 mL量瓶中,加无水乙醇稀释至刻度,摇匀,作为对照品溶液。
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取聚山梨酯60约4 g,精密称定,置100 mL量瓶中,精密加入内标溶液1.0 mL,加无水乙醇稀释至刻度,摇匀,作为供试品溶液。
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Shimadzu GC-2030气相色谱仪;
色谱柱:SH-I-17(30 m × 0.53 mm × 1 μm;P/N:221-76193-30)
升温程序:初始温度40℃,以每分钟10 ℃的速率升温至60 ℃,维持5 min,再以每分钟15 ℃的速率升温至170 ℃,维持5分钟,再以每分钟35 ℃的速率升温至280 ℃,维持20分钟。
载气:He
进样口温度:270 ℃
分流模式:分流(5:1)
控制模式:恒线速度(29 cm/s)
检测器:FID,温度:290 ℃
进样量:1 μL
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2. 实验结果
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按照上述色谱条件(1.3)进行采集,系统适用性试验溶液、对照溶液、供试品溶液色谱图如下:
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3.结论
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本文建立了聚山梨酯60中乙二醇和二甘醇的GC分析方法。参考聚山梨酯60药用辅料标准草案公示稿中的色谱条件,采用色谱柱SH-I-17分析聚山梨酯60中的乙二醇和二甘醇,结果显示,乙二醇和二甘醇无杂质干扰,峰形和重现性良好,满足检测要求。此方法可为聚山梨酯60中乙二醇和二甘醇的测定提供参考。
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