高等学校化学学报

高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (6): 493.

• 研究论文 • 上一篇    下一篇

BAT离子电极的研制及其跟踪I--BAT-H2O2反应测定微量碘

王柯敏, 俞汝勤   

  1. 湖南大学化学化工系
  • 收稿日期:1985-03-26 出版日期:1986-06-24 发布日期:1986-06-24
  • 基金资助:

    中国科学院科学基金

A New BAT Ion Electrode and Microdetermination of Iodide Using I--BAT-H2O2 Reaction Monitored by the Electrode

Wang Kemin, Yu Ruqin   

  1. Department of Chemistry and Chemical Engineering, Hunan University, Changsha
  • Received:1985-03-26 Online:1986-06-24 Published:1986-06-24

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摘要： 本文用长链季鏻盐十六烷基三苯基鏻(HTPP)制备了一种新的溴胺T(BAT)离子电极。其性能较类似的氯胺T有显著改善。用其跟踪碘离子催化的BAT-H2O2反应可测定0.4—64ppb范围内的碘,多数离子不干扰测定。提出了催化反应的可能机理,并确定了催化反应的动力学方程。该法用于人体血清蛋白结合碘的测定,获得了较好的结果。

Abstract: Anew bromoamine-T (BAT) ion electrode made with a long-chain quaternary phosphonium salt hexadecyl triphenyl phosphonium (HTPP) as site material is described. The electrode shows remarkable improvement over the similar chloroamine-T (CAT) electrode reported in literature. Microamount of iodide in the range 0.4-64 ppb can be determined by using I- catalized BAT-H2O2 reaction monitored with BATion electrode. Most common ions do not interfere with the determination. The method is acceptable in the determination of protein-bound iodine. The possible reaction mechanism was proposed.

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