高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (2): 144.

• 研究论文 • 上一篇    下一篇

用DPCI-Os(Ⅳ)-OP-10体系分光光度法测定痕量锇的研究

李玲颖, 李道荣, 张淑荣   

  1. 南开大学化学系
  • 收稿日期:1988-07-27 出版日期:1990-02-24 发布日期:1990-02-24
  • 通讯作者: 李玲颖

Determination for Traces of Osmium with Spectrophotometric Method in the System of DPCI-Os(Ⅳ)-OP-10

Li Lingying, Li Daorong, Zhang Shurong   

  1. Department of Chemistry, Nankai Universtiy, Tianjin
  • Received:1988-07-27 Online:1990-02-24 Published:1990-02-24

摘要: 研究了在OP-10存在下用二苯碳酰二肼测定痕量Os(Ⅳ)的分光光度法。8570nm=3.50×105L·mol-1·cm-1,特征灵敏度为0.057μg/10mL(对应1%吸收)。Os(Ⅳ)与DPCI的组成比为1:1。在0.1~5.0μg/10mL范围内符合比耳定律。

关键词: 二苯碳酰二肼(DPCI), Os(Ⅳ), 非离子表面活性剂, 分光光度法

Abstract: The study of spectrophotometric determination of traces of osmium with 1,5-diphenylcar-bazide in the presence of non-ionic surfactant OP-10 at pH3.5 HAc-NaAc buffer solution is given in this paper. The effects of other noble metals and base metals were investigated. The non-ionic sufac-tant OP-10 phlys an important role in increasing sensitivity and stability. The molar ratio of osmium to the reagent is 1 : 1. The calibration graph for measurement at 570 nm is linear in the range of 0.1 -5.0 mg of osmium per 10 mL, with a molar absorptivity of 3. 50×105 L · mol-1 · cm-1. The relative standard deviation is smaller than 4.0%.

Key words: 1,5-Diphenylcarbazide, Osmium (Ⅳ), Non-ionic sulfactant, Spectrophotometric method

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