| 分光光度法测定食品中的铝 |
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| 引用本文： | 董菁.分光光度法测定食品中的铝[J].安徽工程科技学院学报,2009,24(2). |
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| 作者姓名： | 董菁 |
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| 作者单位： | 芜湖产品质量监督检验所,安徽,芜湖,241000 |
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| 摘 要： | 采用灰化法使铝盐失水,生成氧化铝,用酸提取,通过分光光度法.在乙酸-乙酸钠缓冲溶液中,铝与铬天青S生成紫红色络合物,进行定量分析.该法的回收率达87%～107%.r=0.999 9,显色稳定.该法无论在样品处理上,还是后期比色,都明显优于.
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| 关 键 词： | 分光光度法 铬天青S 灰化法 |
Determination of aluminum in foodstuffs through spectrophotometry |
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| DONG Jing.Determination of aluminum in foodstuffs through spectrophotometry[J].Journal of Anhui University of Technology and Science,2009,24(2). |
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| Authors: | DONG Jing |
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| Institution: | DONG Jing(Wuhu Product Quality Supervision , Inspection Institue,Wuhu 241000,China) |
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| Abstract: | Aluminum in foods mainly derives from the additives in them.Aluminum compounds contained in the additives,through the ashing method,would lose water and turn into alumina,which is to be extracted by acid and through spectrophotometry would,together with chrome azurol S,form purple-red complex compounds in the glacialacetic acid-sodium acetate fluids,and so can be determined.Through the method,the recovery rate reaches 87 to 107 percent,r = 0.9991,and the color development is stable,compared with GB/T5009.18... |
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| Keywords: | spectrophotometry chrome azurol S ashing method |
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