| 甲基紫催化光度法测定饲料中的微量碘 |
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| 引用本文： | 孙德辉,陈忠良.甲基紫催化光度法测定饲料中的微量碘[J].饲料工业,2007,28(5):39-40. |
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| 作者姓名： | 孙德辉 陈忠良 |
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| 作者单位： | 福建省中心检验所,350002,福建省福州市;福建省中心检验所,350002,福建省福州市 |
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| 摘 要： | 在磷酸介质中,微量碘离子与碘酸钾氧化反应能催化甲基紫褪色,而且褪色程度与碘离子的量有关,最大吸收波长在575nm,在0～2μg/ml范围内呈线性关系。测试方法检测限为0.062μg/ml,回收率为96.7%～99.3%。用于饲料中微量碘的测定,结果令人满意。
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| 关 键 词： | 碘 饲料 甲基紫 催化光度法 |
| 修稿时间： | 2006-10-23 |
Spectrophotometric determination of micro iodine in feed by catalytic color fading of methyl violet |
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| Sun Dehui,Chen Zhongliang.Spectrophotometric determination of micro iodine in feed by catalytic color fading of methyl violet[J].Feed Industry,2007,28(5):39-40. |
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| Authors: | Sun Dehui Chen Zhongliang |
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| Abstract: | It is found that in the medium of H3PO4,the fading reaction of Methyl violet is quickened by IO3-with the presence of micro iodine. The fading of methyl violet is found to be directly proportional to the amount of iodinate,and linear range is 0～2 μg/ml. The Maximum absorption is at 575 nm and the detection limit is 0.062 μg/ml. The recovery is 96.7%～99.3%. The application of this method to analysis of feed gives satisfactory results. |
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| Keywords: | iodine feed methyl violet catalytic spectrophotometry |
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