| 比值导数光谱法同时测定食品中山梨酸、苯甲酸和糖精钠的含量 |
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| 引用本文： | 梁奇峰,侯敬杨,梁文.比值导数光谱法同时测定食品中山梨酸、苯甲酸和糖精钠的含量[J].化学试剂,2017,39(5). |
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| 作者姓名： | 梁奇峰 侯敬杨 梁文 |
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| 作者单位： | 嘉应学院化学与环境学院,广东梅州,514015 |
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| 摘 要： | 利用比值导数光谱法,不经分离同时测定食品中山梨酸、苯甲酸和糖精钠的含量.确定山梨酸、苯甲酸和糖精钠的测定波长分别为237.5、208.5和204.5 nm,测定线性范围分别为0.50～4.50、1.60～14.40和10.00～90.00 μg/mL,线性相关系数分别为0.999 7、0.999 6和0.998 6,测定的相对标准偏差＜3.3％(n=11),加标回收率为96.4％～104.1％.
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| 关 键 词： | 比值导数光谱法 山梨酸 苯甲酸 糖精钠 |
Determination of Sorbic Acid,Benzoic Acid and Saccharin Sodium in Food by Ratio Derivative Spectrophotometry |
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| LIANG Qi-feng,HOU Jing-yang,LIANG Wen.Determination of Sorbic Acid,Benzoic Acid and Saccharin Sodium in Food by Ratio Derivative Spectrophotometry[J].Chemical Reagents,2017,39(5). |
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| Authors: | LIANG Qi-feng HOU Jing-yang LIANG Wen |
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| Abstract: | A method of determination of sorbic acid,benzoic acid and saccharin sodium in food by ratio derivative spectrophotometry was proposed.The determination wavelengths were selected as 237.5,208.5 and 204.5 nm for sorbic acid,benzoic acid and saccharin sodium,respectively.The linear ranges of determination were 0.50 ～ 4.50,1.60 ～ 14.40 and 10.00 ～ 90.00 μg/mL.The correlative coefficients were 0.999 7,0.999 6 and 0.998 6.The relative standard derivations was less than 3.3％ (n =11),the recoveries were in the range of 96.4％ ～ 104.1％. |
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| Keywords: | ratio derivative spectrophotometry sorbic acid benzoic acid saccharin sodium |
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