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Acta Chimica Sinica ›› 1982, Vol. 40 ›› Issue (5): 419-423. Previous Articles     Next Articles

在溴化十六烷基三甲基铵存在下Bi(Ⅲ)与邻苯三酚红络合反应的研究

徐其亨, 许琇钧   

  1. 云南大学化学系, 昆明
  • 投稿日期:1981-01-22 发布日期:2013-06-03
  • 通讯作者: 徐其亨

THE INVESTIGATION OF COMPLEX FORMATION BETWEEN BISMUTH (Ⅲ) AND PYROGALLOL RED IN THE PRESENCE OF CETYLTRIMETHYLAMMONIUM BROMIDE

XU QI-HENG, XU XIU-JUN   

  1. Department of Chemistry, Yunnan University, Kunming
  • Received:1981-01-22 Published:2013-06-03

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The complex formation between Bi (Ⅲ) and pyrogallol red (PR) in the presence of cetyltrimethylammonium bromide (CTAB) has been studied. The blue ternary complex (λmax615 nm) has a composition of 1:1:2 (Bi:PR:CTAB) at pH 2.0±0.2. Beer's law is obeyed over the range 0~300 μg of Bi/50 mL. The molar absorptivity is 2.0×104L·mol-1·cm-1 at 615 nm. A tentative structure for the ternary complex is suggested. The apparent stability constant has been calculated to be 1.4·1015. A simple method is suggested for the determination of bismuth in ores.