| 催化动力学光度法测定合金中的镍 |
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| 引用本文： | 夏畅斌,黄念东,王红军,何湘柱. 催化动力学光度法测定合金中的镍[J]. 光谱学与光谱分析, 2004, 24(11): 1484-1485 |
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| 作者姓名： | 夏畅斌 黄念东 王红军 何湘柱 |
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| 作者单位： | 湖南科技大学化学化工学院,湖南,湘潭,411201;湖南科技大学化学化工学院,湖南,湘潭,411201;湖南科技大学化学化工学院,湖南,湘潭,411201;湖南科技大学化学化工学院,湖南,湘潭,411201 |
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| 基金项目： | 国家自然科学基金(50004003)，湖南省自然科学基金(00JJY20118)资助项目 |
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| 摘 要： | 在(CH2)6N4HCl缓冲溶液中,OP乳化剂的存在下,痕量镍(Ⅱ)对H2O2氧化若丹明B(RhB)的褪色反应有强的催化作用,催化程度与镍(Ⅱ)量线性相关。基于此,建立了一种测定镍(Ⅱ)的分光光度法。结果表明,有色溶液的最大吸收波长为550nm,方法的检出限为04μg·L-1,催化程度与Ni(Ⅱ)量在0～030mg·L-1范围内符合比耳定律,选择性较好,可用于测定非晶态FeNiCr合金中的镍。
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| 关 键 词： | 合金 镍 若丹明B 催化动力学光度法 |
| 文章编号： | 1000-0593(2004)11-1484-02 |
| 修稿时间： | 2003-01-07 |
Catalytic Kinetic Spectrophotometric Determination of Nickel in Alloys |
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| XIA Chang bin,HUANG Nian dong,WANG Hong jun,HE Xiang zhu School of Chemistry and Chemical Engineering,Hunan University of Science and Technology,Xiangtan ,China. Catalytic Kinetic Spectrophotometric Determination of Nickel in Alloys[J]. Spectroscopy and Spectral Analysis, 2004, 24(11): 1484-1485 |
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| Authors: | XIA Chang bin HUANG Nian dong WANG Hong jun HE Xiang zhu School of Chemistry Chemical Engineering Hunan University of Science Technology Xiangtan China |
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| Affiliation: | School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China. |
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| Abstract: | In (CH2)6N4-HCl buffer solution and in the presence of OP emulsifier trace Ni(II) catalyzes strongly the decolorization reaction of Rhodamine B (RhB) by oxidizing with H2O2, and its catalytic extent is linear with the contents of Ni(II) in a certain range. Based on this study, a novel spectrophotometric method for determining Ni(II) was developed. The results show that the maximum absorption of the complex is at 550 nm, the detection limit of the method is 0.4 microg x L(-1) for Ni(II), and Beer's law is obeyed for Ni(II) in the range of 0-0.3 mg x L(-1). The method has been applied to the determination of Ni in FeNiCr alloys with satisfactory results. |
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| Keywords: | Alloy Nickel Rhodamine B Catalytic kinetic spectrophotometry |
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