高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (5): 593.

• 论文 • 上一篇    下一篇

电致化学发光抑制效应测定硫脲

安镜如1, 林建国2   

  1. 1. 福州大学化学系, 福州, 350002;
    2. 武汉产品质量监督检验所
  • 收稿日期:1991-04-06 出版日期:1992-05-24 发布日期:1992-05-24
  • 通讯作者: 安镜如
  • 基金资助:

    国家自然科学基金

Determination of Thiourea with Inhibition Action of Electrochemiluminescence

AN Jing-ru1, LIN Jian-guo2   

  1. Department of Chemistry, Fuzhou University, Fuzhou, 350002
  • Received:1991-04-06 Online:1992-05-24 Published:1992-05-24

PDF (PC)

被引次数

8

摘要： 在自制的ECL-1型电致化学发光仪上,用电化学发光法研究了硫脲.发现硫脲对新的酰肼类试剂6-[2,4-二羟基苯基偶氮]-2,3-二氢-1,4-酞嗪二酮(DHDHD)在Na2CO3-NaHCO3-KCl体系中的电化学发光有较强的抑制效应.在0.05～5mg/L范围内,硫脲浓度的对数与发光强度有良好的线性关系.0.2mg/L的硫脲,相对标准偏差为2%.并探讨了发光机理.

关键词: 电致化学发光, 流脲, 抑制效应

Abstract: The electrochemiluminescence of thiourea was studied in medium of Na2CO3-NaHCO3-KCl-DHDHD(pH= 9.8) by a self-made apparatus.Thiourea exhibits an evident inhibition action for electrochemiluminescence of DHDHD.It can be used for the determination of microamounts of thiourea.Alinear relationship between the concentration and intensity of light emitted is obtained in the range of 0.005～5 ppm for thiourea.The relative standard deviation is 2%.The mechanism of the electrochemiluminescence of thiourea is also discussed.

Key words: Electrochemiluminescence, Thiourea, Inhibition action

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