| 离子色谱法测定蔗糖中的微量SO_2 |
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| 引用本文： | 莫海涛,郭丽萍,李永库. 离子色谱法测定蔗糖中的微量SO_2[J]. 食品与发酵工业, 2006, 32(2): 93-95 |
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| 作者姓名： | 莫海涛 郭丽萍 李永库 |
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| 作者单位： | 1. 广西大学糖业工程技术研究中心,南宁,530004
2. 广西大学轻工与食品工程学院,南宁,530004 |
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| 摘 要： | 建立了离子色谱测定蔗糖中微量亚硫酸根(SO_2)残留量的方法。选择体积分数为1%的甲醛为亚硫酸盐的稳定剂。在 IonPac AS11分析柱上以8．0 mmol/L 的 NaOH 为淋洗液,进行抑制电导检测。结果表明,亚硫酸盐的浓度与其峰面积在0．25～5．0 mg/L 范围内呈良好的线性关系,相关系数为0．9990,检出限为0．05mg/ L。回收率92．5%～95．0%,RSD＜3．3%(n=5),该法用于实际样品的分析,结果令人满意。
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| 关 键 词： | 离子色谱法 亚硫酸盐 蔗糖 抑制电导检测 |
| 收稿时间： | 2005-11-11 |
| 修稿时间： | 2005-11-11 |
Determination of Sulfur Dioxide in Sugar by Ion Chromatography |
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| Mo Haitao,Guo Liping,Li Yongku. Determination of Sulfur Dioxide in Sugar by Ion Chromatography[J]. Food and Fermentation Industries, 2006, 32(2): 93-95 |
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| Authors: | Mo Haitao Guo Liping Li Yongku |
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| Affiliation: | 1.Engineering Center for Sugar Cane and Cane Sugar, Guangxi University, Nanning 530004,China; 2.Light Industry and Food Engineering Institute, Guangxi University, Nanning 530004,China |
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| Abstract: | An ion exchange chromatography method was established to measure trace sulfite (SO_2) in sugar. 1% (V/V) formaldehyde was selected as a stabilizing agent of sulfite.Chromatographic separation was performed on an Ionpac AS11X11 column 8 mmol/L NaOH with eluent at 1.0 mL/min with suppressed conductively detec- tion Chromatography.The results demonstrated that the linear range was 0.25～5.0 mg/L with a detection limit of 0.05 mg/L for sulfite.The different spiked levels were ranged from 92.5% to 95.0% with RSDs below 3.2% (n=5).The method can be applied to the determination of sulfur dioxide with satisfactory results. |
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| Keywords: | ion chromatography sulfite sugar suppressed conducting detection |
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