高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (4): 486.

• 研究论文 • 上一篇    下一篇

新显色剂二溴羟基苯基荧光酮的氧化显色反应及双波长分光光度法测定废水中的铬

欧忠平1, 陆侠2, 潘教麦3   

  1. 1. 南京师范大学化学系, 南京;
    2. 南通师范专科学校化学系, 南通;
    3. 华东师范大学化学系, 上海 200062
  • 收稿日期:1992-05-23 修回日期:1992-10-12 出版日期:1993-04-24 发布日期:1993-04-24
  • 通讯作者: 潘教麦

The Oxidation Colour Reaction of the New Colour Reagent 2,3,7-Trihydroxy-9-dibromo-hydroxyphenyi fluorone and Determination of Cr in Waste Water by Dual-Wavelength Spectrophotometry

OU Zhong-Ping1, LU Xia2, PAN Jiao-Mai3   

  1. 1. Department of Chemistry, Nanjing Normal University;
    2. Department of Chenustry, Nantong Teachers College;
    3. Department of Chemistry.East China Normal Uiversity, Shanghai, 200062
  • Received:1992-05-23 Revised:1992-10-12 Online:1993-04-24 Published:1993-04-24

关键词: 氧化显色反应, 二溴羟基苯基荧光酮, 双波长分光光度法, 废水,

Abstract: The colour reaction between Cr and the new colour reagent 2, 3, 7-trihydroxy-9-dibromo-hydroxyphenyl fluorone was studied by spectrophotometry and potentiometric tilration.It is found that the colour reaction between Cr and the colour reagent (DBHPF) is an oxidation colour reaction in both weak and strong acid media, Based on this colour reaction, a dual-wavelength spectrophotometry for the determination of Cr has been established.Cr(Ⅵ) and total Cr in waste water had been determined by this method.The results and the recovery are satisfactory.

Key words: Oxidation colour reaction,2,3,4-Trihydroxy-9-dibromo-hydroxyphenyitluorone, Dual-wavelength spectrophotometry, Waste water, Cr

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