| 棓花青褪色光度法测定电镀废水中的铬(Ⅵ) |
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| 引用本文： | 郭振良,姜华.棓花青褪色光度法测定电镀废水中的铬(Ⅵ)[J].环境工程,2003,21(2):53-54. |
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| 作者姓名： | 郭振良 姜华 |
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| 作者单位： | 烟台师范学院化学系 山东264025
(郭振良)，烟台师范学院化学系 山东264025(姜华) |
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| 摘 要： | 在硫磷混酸介质 ,10 0℃恒温水浴中 ,铬 (Ⅵ )能氧化花青显著褪色 ,据此建立了测定铬 (Ⅵ )的新方法。铬(Ⅵ )的浓度在 0～ 1 0 4μg mL范围内符合比耳定律 ,表观摩尔吸光系数为 1 90× 10 4L mol·cm。此法用于测定电镀废水中铬 (Ⅵ )的含量 ,结果令人满意
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| 关 键 词： | 铬(Ⅵ) 棓花青 褪色光度法 |
SPECTROPHOTOMETRIC DETERMINATION OF Cr (Ⅵ) IN ELECTROPLATING EFFLUENT WITH FADING REACTION OF GALLOCYANINE |
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| Guo Zhenliang et al.SPECTROPHOTOMETRIC DETERMINATION OF Cr (Ⅵ) IN ELECTROPLATING EFFLUENT WITH FADING REACTION OF GALLOCYANINE[J].Environmental Engineering,2003,21(2):53-54. |
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| Authors: | Guo Zhenliang |
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| Institution: | Guo Zhenliang et al |
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| Abstract: | The fading oxidation of gallocyanine by Cr(Ⅵ) in H_2SO_4-H_3PO_4 medium at 100 ℃ is investigated.The maximum absorptivity wavelength is 530 nm and the apparent molar absorptivity is 1.90×10 4 L/mol·cm.Beer's law will be obeyed if the concentration of Cr(Ⅵ) is in the range of 0～1.04 μg/mL.The method has been applied to the determination of Cr (Ⅵ) in electroplating effluent with satisfactory results. |
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| Keywords: | chromium (Ⅵ) gallocyanine and fading spectrophotometry |
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