| 多波长线性回归光度法同时测定食品中钙镁 |
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| 引用本文： | 耿玉珍,高吉刚,刘葵.多波长线性回归光度法同时测定食品中钙镁[J].食品与发酵工业,2002,28(1):53-55. |
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| 作者姓名： | 耿玉珍 高吉刚 刘葵 |
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| 作者单位： | 山东农业大学理学院,泰安,271018 |
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| 摘 要： | 在pH =8 .8的硼砂缓冲溶液中 ,三氯偶氮氯膦分别与Ca2 + 和Mg2 + 形成稳定的配合物。用多波长线性回归光度法同时测定钙、镁。合成样品中钙和镁的回收率分别为 94%～ 10 5 %和 95 %～ 10 4%。该方法应用于食品中钙、镁含量的测定 ,结果满意
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| 关 键 词： | 分光光度法 多波长线性回归 钙 镁 食品 |
| 修稿时间： | 2001年6月28日 |
Simultaneous Determination of Calcium and Magnesium in Food by Multiwavelength Linear Regression Spectrophotometry |
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| Geng Yuzhen,Gao Jigang Liu Kui.Simultaneous Determination of Calcium and Magnesium in Food by Multiwavelength Linear Regression Spectrophotometry[J].Food and Fermentation Industries,2002,28(1):53-55. |
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| Authors: | Geng Yuzhen Gao Jigang Liu Kui |
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| Abstract: | The reagent trichloro chlorophosphonazo form complex with Ca 2+ and Mg 2+ in borax buffer solution. The calcium and magnesium were determined simultaneously by using multiwavelength linear regression spectrophotometry. The average recovery of calcium and magnesium in synthetic samples were 94～105% and 95～104% respectively. The method has been applied to the determination of calcium and magnesium in food with satisfactory results. |
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| Keywords: | spectrophotometry multiwavelength linear regression calcium magnesium food |
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