| 钴(Ⅱ)催化偶氮胭脂红B的褪色反应特性及应用 |
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| 引用本文： | 孙宁,尹庚明,黄宗武,梁恺旋.钴(Ⅱ)催化偶氮胭脂红B的褪色反应特性及应用[J].分析试验室,1999,18(4):73-75. |
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| 作者姓名： | 孙宁 尹庚明 黄宗武 梁恺旋 |
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| 作者单位： | 五邑大学,化工系,江门,529000 |
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| 摘 要： | 基于氢氧内介质中痕量钴对过氧化氢氧化偶氮胭脂红Ｂ的褪色反应的强烈催化作用，建立了催化光度法测定痕量钴的新方法。方法灵敏度为５．２４×１０＾－１２ｇ／ｍＬ，测定范围为０￣３５ｎｇ／１０ｍＬ，对质量浓度为３μｇ／Ｌ的Ｃｏ（Ⅱ）重复测定１１次的相对标准偏差为２．１６％。方法应用于维生素Ｂ１２和矿泉水中痕量钴的测定，结果满意。
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| 关 键 词： | 催化光度法 偶氮胭脂红B 钴测定 |
| 文章编号： | 1000-0720(1999)
04-073-03 |
The Character of Azocarmine B Decolorizing Reaction with Cobalt(Ⅱ) Catalysis and Its Application |
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| SUN Ning,YIN Geng-ming,HUANG Zong-wu,LIANG Kai-xuan.The Character of Azocarmine B Decolorizing Reaction with Cobalt(Ⅱ) Catalysis and Its Application[J].Chinese Journal of Analysis Laboratory,1999,18(4):73-75. |
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| Authors: | SUN Ning YIN Geng-ming HUANG Zong-wu LIANG Kai-xuan |
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| Abstract: | new catalytic
spectrophotometric method for the determination of trace cobalt has been established. It is
based on the fact that cobalt() can catalyze the oxidation of azocarmine B by H2O2 in
NaOHmedium.The sensitivity of the method is 5.2410-12 g/ml and the rangeof determination is
035 ng/10mL for cobalt(). The relative standard deviation is 2.16%(for 30ng/10mL
Co(),n=11).This method has been applied to the determination of cobalt in vitamin B12 and
mineral water with satisfactory results. |
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| Keywords: | Catalytic spectrophotometry azocarmine B cobalt determination |
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