| 毛细管气相色谱法测定食品中的防腐剂 |
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| 引用本文： | 何风云,顾卫东,朱子丰.毛细管气相色谱法测定食品中的防腐剂[J].现代仪器,2008,14(2):68-70. |
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| 作者姓名： | 何风云 顾卫东 朱子丰 |
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| 作者单位： | 南京晓庄学院化学系,江苏南京,210017 |
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| 基金项目： | 南京晓庄学院人才引进资助项目 |
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| 摘 要： | 建立一种同时测定食品中防腐剂苯甲酸与山梨酸的毛细管气相色谱方法。本实验采用Rtx-5型(30m×0.32mm×0.25μm)熔融石英毛细管柱,在优化的条件下,2种常见防腐剂(山梨酸和苯甲酸)在2.9min内实现基线分离。两组分平均回收率(n=3)为95.7%,线性范围为1.0～10μg/mL,线性相关系数大于0.9955。并成功地应用该方法检测实际食品中防腐剂。
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| 关 键 词： | 气相色谱法 食品 防腐剂 山梨酸 苯甲酸 |
Determination of preservatives in foods by capillary gas chromatography |
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| He Fengyun,Gu Weidong,Zhu Zifeng.Determination of preservatives in foods by capillary gas chromatography[J].Modern Instruments,2008,14(2):68-70. |
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| Authors: | He Fengyun Gu Weidong Zhu Zifeng |
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| Abstract: | A rapid,simple and accurate method for separation and determination of 2 common preservatives (sorbic acid and benzoic acid) in foods by capillary gas chromatography has been developed by using a Rtx-5 fused silica capillary column (30m×0.32mm×0.25μm). Under optimal conditions the two preservatives were baseline separated within 2.9 min,with the average recovery of 95.7 % ( n = 3),detection limits of 1.0~10μg/mL,and linear correlation coefficient of higher than 0. 9955. This method has been successfully applied to real food analysis. |
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| Keywords: | Gas chromatography Food preservative Sorbic acid Benzoic acid |
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