| 测定工业废水中铬（Ⅵ）的新方法 |
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| 引用本文： | 周福林,宋少飞,裴翠锦,李华静,李强.测定工业废水中铬（Ⅵ）的新方法[J].杭州师范学院学报(自然科学版),2008,7(3):198-201. |
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| 作者姓名： | 周福林 宋少飞 裴翠锦 李华静 李强 |
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| 作者单位： | 运城学院应用化学系,山西运城,044000 |
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| 摘 要： | 基于在HAc—NaAc缓冲介质中，Cr（Ⅵ）能显著催化高碘酸钾氧化罗丹明B进行褪色，同时加入十六烷基三甲基溴化铵作为增敏剂，灵敏度大大提高，建立了测定工业废水中Cr（Ⅵ）的新方法．研究了影响催化褪色反应速度的条件，在最优化条件下，Cr（Ⅵ）浓度在0．004～0．28μg／mL范围内与吸光度呈良好的线性关系，方法的检出限为3×10^-5μg／mL，对浓度为0．012μg／mL Cr（Ⅵ）标准溶液进行11次平行测定的相对标准偏差（RSD）为0．1％．该法具有灵敏度高、选择性好等特点，已用于工业废水中Cr（Ⅵ）的测定，回收率为90％～102％，结果令人满意．
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| 关 键 词： | 催化动力学光度法 铬(Ⅵ) 工业废水 |
| 文章编号： | 1674-232X(2008)03-0198-04 |
| 修稿时间： | 2008年3月13日 |
A New Way for Determination of Chromium (Ⅵ) in Industry Waste Water |
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| ZHOU Fu-lin,SONG Shao-fei,PEI Cui-jin,LI Hua-jing,LI Qiang.A New Way for Determination of Chromium (Ⅵ) in Industry Waste Water[J].Journal of Hangzhou Teachers College(Natural Science),2008,7(3):198-201. |
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| Authors: | ZHOU Fu-lin SONG Shao-fei PEI Cui-jin LI Hua-jing LI Qiang |
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| Institution: | (Department of Applied Chemistry, Yuncheng University, Yuncheng 044000, China) |
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| Abstract: | A new catalytic kinetic spectmphotometric method for the determination of Cr（ Ⅵ） has been developed. The method is based on the catalytic effect of Cr（ Ⅵ ） on the oxidation of rhodamine B by high potassium iodate in buffer solution of acetic acid-sodium acetic medium, and addition of surfactant CTMAB as sensitizer. The effecting factors have been investigated. Under optimal conditions, the Cr（ Ⅵ ） concentration within a range of 0. 004-0.28 μg/mL has a good linear relation, and the detection limit is 3 × 10^-5μg/mL, and the relative standard deviation （RSD） is 0.1% for 0. 012 μg/mL Cr（ Ⅵ ） solution （n= 11）. The method has high sensitivity and selectivity, and has been used to determine the Cr（Ⅵ ） content in industry waste water, and the recoveries between 90%- 102% are obtained with satisfied results. |
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| Keywords: | catalytic kinetics spectrophotometry Chromium（Ⅵ） industry waste water |
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