顶空气相色谱法测定强力枇杷露中薄荷脑的含量
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篇名: | 顶空气相色谱法测定强力枇杷露中薄荷脑的含量 |
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摘要: | 目的:建立测定强力枇杷露中薄荷脑含量的方法。方法:采用顶空气相色谱法。色谱柱为HP-INNOWax毛细管柱,柱温为恒温80 ℃,进样口温度为150 ℃,检测器为氢火焰离子化检测器,检测器温度为250 ℃,氮气流速为0.8 ml/min,恒定流量、不分流,顶空进样量为1 ml,顶空瓶平衡温度为80 ℃,平衡时间为20 min。结果:薄荷脑的检测质量浓度线性范围为 2.486~24.86 μg/ml(r=0.999 9);精密度、稳定性、重复性试验的RSD<2%;加样回收率为95.4%~99.8%,RSD=1.5%(n=9)。结论:该方法简便、准确,可用于测定强力枇杷露中薄荷脑的含量。 |
ABSTRACT: | OBJECTIVE:To establish a method for the content determination of menthanol in Qinagli pipa syrup. METHODS: Headspace GC was performed on the column of HP-INNOWax capillary column, column temperature was 80 ℃, temperature inlet sample was 150 ℃, the detector was hydrogen flame ionization detector with temperature of 250 ℃, the flow rate of nitrogen was 0.8 ml/min with constant flow and no split, the volume injection was 1 ml, the equilibrium temperature of headspace bottle was 80 ℃, and the equilibrium time was 20 min. RESULTS: The linear range of menthanol was 2.486-24.86 μg/ml(r=0.999 9), RSDs of precision, stability and reproducibility tests were lower than 2%, recovery was 95.4%-99.8%(RSD=1.5%,n=9). CONCLUSIONS: The method is simple and accurate, and can be used for the content determination of menthanol in Qinagli pipa syrup. |
期刊: | 2016年第27卷第12期 |
作者: | 关晓娟,吴查青 |
AUTHORS: | GUAN Xiaojuan,WU Chaqing |
关键字: | 顶空气相色谱法;薄荷脑;强力枇杷露;含量 |
KEYWORDS: | Headspace GC; Menthanol; Qiangli pipa syrup; Content |
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