| 顶空气相色谱法测定三氯蔗糖中的有机溶剂残留 |
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| 引用本文： | 刘敬兰,何书美,解洪伟.顶空气相色谱法测定三氯蔗糖中的有机溶剂残留[J].分析试验室,2010,29(10). |
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| 作者姓名： | 刘敬兰 何书美 解洪伟 |
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| 作者单位： | 1. 河北师范大学实验中心,石家庄,050016
2. 河北科技师范学院化学系,昌黎,066600 |
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| 摘 要： | 建立了顶空气相色谱法(HSGC)同时测定三氯蔗糖中甲醇、乙酸乙酯和乙酸丁酯残留量的分析方法。用Angilent Innowax毛细柱,程序升温,FID检测器,以保留时间定性,外标法定量,探讨了盐溶液、相比、平衡温度、平衡时间和振荡幅度等因素对测定结果的影响。结果表明,以100 g/L NaCl溶液为溶解液,取1mL溶液于20 mL顶空瓶中,平衡温度为80℃,平衡时间为15 min,振荡幅度低的条件下,该方法线性关系良好,3种物质线性方程的相关系数r在0.9999~1之间;方法精密度RSD(n=6)小于2.0%。三氯蔗糖样品的加标平均回收率均在95%以上。
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| 关 键 词： | 顶空气相色谱 三氯蔗糖 有机溶剂残留 |
Determination of residual organic solvents in sucralose by headspace gas chromatography |
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| LIU Jing-lan,HE Shu-mei,XIE Hong-wei.Determination of residual organic solvents in sucralose by headspace gas chromatography[J].Chinese Journal of Analysis Laboratory,2010,29(10). |
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| Authors: | LIU Jing-lan HE Shu-mei XIE Hong-wei |
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| Institution: | LIU Jing-lan 1,HE Shu-mei1and XIE Hong-wei 2 (1.Experimental Center,Hebei Normal University,Shijiazhuang 050016,2.Hebei Normal University of Science and Technology Chemistry Department,Changli 066600) |
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| Abstract: | A method for the determination of the residual solvents(methanol,ethyl acetate and butyl acetate)in sucralose by headspace gas chromatography(HSGC) was developed.A capillary column(Innowax) and flame ionization detector(FID) were used in the GC analysis.The species identification and quantification were performed by retention time based on the external standard samples.The effects of the salting-out,phase ratio,temperature,equilibration time,and agitation on the quantification of species were investigated.T... |
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| Keywords: | Headspace gas chromatography(HSGC) Sucralose Solvent residues |
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